JP7199733B2 - Water stop agent discharge device, how to use water stop agent discharge device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water-stopping agent discharging device for discharging a water-stopping agent to be injected into cracks in a concrete structure from a discharge port, and a method of using the water-stopping agent discharging device.

BACKGROUND ART Conventionally, as concrete structures buried underground, concrete structures in which joints made of elastite or the like are arranged between box culverts, shield tunnels, and the like have been constructed. In this type of concrete structure, in order to stop water leakage from cracks due to misalignment of joints caused by concrete or uneven settlement, etc., or from cracks generated from the concrete frame, A liquid agent is injected, and a urethane-based foamed resin that hardens in a foamed state upon reaction with water is used as the waterproofing agent (for example, Patent Document 1).

When the above waterproofing agent is used, a hopper X with an open upper end as shown in FIG. The waterproofing agent Y (urethane-based foamed resin) stored in the hopper X is pumped up and injected into the cracks.

JP-A-1-17971

By the way, when the above hopper X is used, since the upper end of the hopper X is open, moisture in the air comes into contact with the water stopping material Y in the hopper X, A phenomenon in which a part of the agent Y foams and hardens may occur (an example of this phenomenon is a phenomenon called skin burr, in which a film in which a part of the waterproofing agent Y foams and hardens is generated). When the above phenomenon occurs, burrs or the like of the foam stay in the flow path of the waterproofing agent discharge device and clog the flow path, so that the waterproofing agent Y cannot be smoothly injected into the crack. disappearance can occur. Therefore, when the hopper X is used, in order to avoid the above phenomenon, the formulation of the water-stopping agent Y is designed so that the foaming time of the water-stopping agent Y is delayed (the water-stopping agent Y The slow foaming time means that the water-blocking agent foams slowly due to the reaction with moisture (moisture in the atmosphere, etc.) More specifically, after a predetermined time has passed since contact with moisture. means that the foaming ratio of the waterproofing agent Y is low).

However, if the foaming time of the waterproofing agent Y is delayed as described above, the injection of the waterproofing agent Y must be continued for a long time in order to stop water from cracking. For this reason, a large amount of the waterproofing agent Y is required, and in order to confirm the water stopping effect, it is necessary to wait at the site for a long time or repeatedly enter the site. In addition, when a large amount of water (groundwater, etc.) enters the cracks, a large amount of the water-stopping agent Y leaks from the cracks together with the water, and the foamed and unfoamed bodies of the water-stopping agent Y leaked in large amounts are destroyed. It requires a lot of time and effort and cost for processing.

Further, when the water-stopping agent Y in the hopper X is pumped up and injected into the crack, the water-stopping agent Y is injected into the crack, and then the flow path of the water-stopping agent Y is sufficiently washed. There is a need. If this cleaning is neglected, the water-stopping agent Y remaining in the flow path will foam during the next injection, clogging the flow path and hindering the flow of the water-stopping agent Y, resulting in cracks. A situation may arise in which the waterproofing agent Y cannot be smoothly injected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a waterproofing agent discharge device capable of completing water stopping of cracks in a short period of time. Another object of the present invention is to provide a method of using a water-stopping agent discharge device that can stably maintain the function of the water-stopping agent discharging device to discharge water-stopping agent.

To achieve the above objectives, the present invention includes the subject matter described in the following sections.

Section 1. A state in which a container including the container body having an opening and a lid capable of closing the opening, in which the waterproofing agent is stored in the container body, and the opening of the container body being connected to an inlet and a device body capable of flowing the waterproofing agent stored in the container body from the inlet toward the outlet and discharging it from the outlet, wherein the waterproofing agent is isocyanate. A waterproofing agent discharge device comprising a polyurethane resin composition comprising a group-containing compound, a hydroxyl group-containing compound and a catalyst, and having an isocyanate group-containing compound content (NCO %) of 4% or more.

Section 2. The device body comprises a pump, a first tubular passage, and a second tubular passage,
The opening at the upstream end of the first tubular passage constitutes the inlet,
a downstream end of the first tubular passage is connected to an inlet of the pump;
the upstream end of the second tubular passage is connected to the outlet of the pump;
the downstream end of the second tubular passage is configured by a tubular body provided with a lever and a valve body;
The discharge port is formed by an opening of the tubular body, and switching between a state in which the opening of the tubular body is closed by the valve body and a state in which the opening of the tubular body is opened is performed by operating the lever. is possible and
In a state where the opening of the container body is connected to the opening at the upstream end of the first tubular passage, the pump is operated to open the opening of the tubular body by operating the lever. Item 2. The water stopping agent according to item 1, wherein the water stopping agent stored in the main body is allowed to flow through the first tubular passage, the pump, and the second tubular passage in this order, and be discharged from the opening of the tubular body. Agent ejection device.

Item 3. Item 3. The waterproofing agent discharge device according to Item 2, wherein the container main body is formed using a flexible material.

Section 4. The container body is formed by using a first material having flexibility and a second material having flexibility, and the first material and the second material have four openings at the bottom. The container body is formed by joining a square opening edge of the first material and a square opening edge of the second material. Item 4. The waterproofing agent discharge device according to Item 3, wherein the opening is formed on a slope.

Item 5. The container body is formed using a flexible material and has a bellows shape, and the device body includes a cylinder, a spring, a pump, and a tubular nozzle. , the pump is disposed in an inner space on one end side of the cylinder, and the pump includes a head detachably attached to the other end of the cylinder, a lever attached to the head, and a piston attached to the lever. , the head is formed with an inlet port that constitutes the inlet, a cylinder hole that communicates with the inlet port, and an outlet port that switches communication and blocking with the cylinder hole by opening and closing a valve, The valve opens and closes according to the pressure in the cylinder hole, and the piston is inserted into the cylinder hole from the opening of the cylinder hole, and the piston is moved by operating the lever. The piston can be advanced to the inner side of the cylinder hole and the piston can be retracted to the opening side of the cylinder hole, the outlet port is formed on the inner side of the cylinder hole, and the inlet port is the One end of the nozzle is connected to the outlet port, the opening of the other end of the nozzle constitutes the outflow port, and the cylindrical body With the head removed from the other end, the container body from which the lid has been removed from the opening is placed in the internal space on the other end side of the cylindrical body, and then the head is attached to the other end of the cylindrical body. is attached, the opening of the container body is connected to the inlet port, the container body is pressed against the other end side of the cylinder by the spring, and the opening of the container body is connected to the inlet port. It is connected to an inlet port, and in a state in which the container body is pressed toward the other end of the cylindrical body by the spring, the piston is retracted to move the inside of the container body and the cylinder hole through the inlet port. can be supplied to the cylinder hole through the inlet port, and the pressure in the cylinder hole can be reduced by advancing the piston. is raised to open the valve, the water-stopping agent supplied to the cylinder hole is supplied to the nozzle through the outlet port and discharged from the opening at the other end of the nozzle. Item 1. The waterproofing agent discharge device according to Item 1, which is capable of

Item 6. 6. A method of using a water-stopping agent discharging device according to any one of items 1 to 5, comprising a water-stopping agent discharging step and a filling liquid filling step executed after the water-stopping agent discharging step is executed, In the water-stopping agent discharging step, the water-stopping agent stored in the container body is allowed to flow from the inflow port toward the discharge port while the opening of the container body is connected to the inflow port. The filling liquid is discharged from the discharge port, and in the filling liquid filling step, the opening of the filling liquid container for storing the filling liquid that is incompatible with the water-stopping agent and inhibits the reaction of the water-stopping agent. While connected to the inlet, the filling liquid stored in the filling liquid container is caused to flow from the inlet toward the discharge port, thereby forming a flow path of the device main body from the inlet to the discharge port. with said filling liquid.

According to the waterproofing agent discharge device of the present invention, the waterproofing agent stored in the container body has a short foaming time (a short foaming time due to reaction with moisture). By closing the opening of the container body with a lid, the water stoppage agent stored in the container body can be stored from the time the water stoppage agent is manufactured at a factory or the like until just before the work of injecting the water stoppage agent into the cracks on site. It is possible to prevent the liquid medication from coming into contact with moisture in the atmosphere. Therefore, it is possible to prevent the water-stopping agent from foaming and hardening until the work of injecting the water-stopping agent into the cracks is performed. Therefore, when the water-stopping agent is injected into the cracks, the water-stopping agent having a short foaming time can be smoothly injected into the cracks without hindering the flow of the water-stopping agent due to the foamed product of the water-stopping agent. This makes it possible to stop water from cracks in a short period of time.

According to the method of using the water-stopping agent discharging device of the present invention, the filling liquid filling step is performed after the water-stopping agent discharging step, so that the water-stopping agent remaining in the flow path of the apparatus main body is covered with the filling liquid. be. Therefore, it is possible to prevent the waterproofing agent remaining in the flow path of the device main body from foaming and hardening due to contact with moisture. Therefore, when the water-stopping agent discharging step is performed next time, the water-stopping agent flowing through the flow channel of the device main body pushes away the water-stopping agent remaining in the flow channel together with the filling liquid, and discharges it from the discharge port. be able to. Therefore, it is possible to prevent the water-stopping agent foam from interfering with the flow of the water-stopping agent in the next step of discharging the water-stopping agent. Therefore, in the next water-stopping agent discharging step, the water-stopping agent can be smoothly flowed through the flow path of the device main body, so that the water-stopping agent discharging device can stably function to discharge the water-stopping agent from the discharge port. can be maintained.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the waterproofing agent discharge apparatus which concerns on 1st embodiment of this invention. (A) is a side view of a container provided with the water-stopping agent discharging device, and (B) is a bottom view of the container provided with the water-stopping agent discharging device. FIG. 4 is a perspective view showing a state in which the opening of the container body is connected to the inlet of the device body; FIG. 4 is a perspective view showing a state in which the opening of the container body is connected to the inlet of the device body; 1 is a schematic diagram showing operations performed to inject a water stop agent into cracks in a concrete structure; FIG. 1 is a schematic diagram showing operations performed to inject a water stop agent into cracks in a concrete structure; FIG. 1 is a schematic diagram showing operations performed to inject a water stop agent into cracks in a concrete structure; FIG. (A) is a schematic diagram showing a state when a waterproofing agent discharging step is being performed, and (B) is a schematic diagram showing a state when a filling liquid filling step is being performed. It is a side view of the waterproofing agent discharge device which concerns on 2nd embodiment. It is a sectional view of a waterproofing agent discharge device concerning a second embodiment. It is a sectional view of a waterproofing agent discharge device concerning a second embodiment. Fig. 10 is a perspective view showing a container included in a waterproof agent discharge device according to a second embodiment; (A) is a schematic diagram showing a state when a waterproofing agent discharging step is being performed, and (B) is a schematic diagram showing a state when a filling liquid filling step is being performed. FIG. 2 is a perspective view showing a hopper conventionally used to store a waterproofing agent;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a waterproof agent discharge device 1 according to a first embodiment of the present invention.

The waterproofing agent discharge device 1 according to the first embodiment can discharge the waterproofing agent S from the discharge port 4 . The water stop agent S discharged from the discharge port 4 is injected into the cracks H of the concrete structure K (see FIGS. 5 to 7 described later for the concrete structure K and the cracks H).

"Concrete structure K" means a structure formed using concrete. Examples of the "concrete structure K" include hollow concrete structures buried underground, water tanks and retaining walls made of concrete, and the like. Examples of hollow concrete structures buried underground include structures in which joints made of elastite or the like are arranged between box culverts formed using concrete, and structures formed using concrete segments. A shield tunnel is given.

The cracks H of the concrete structure K occur in concrete or joints. Factors that cause cracks H include drying shrinkage of concrete, temperature changes, differential settlement of concrete structures K, earthquakes, poor construction of concrete structures K, aged deterioration of joints, and the like.

FIG. 2A is a side view of the container 2 included in the water-stopping agent discharging device 1, and FIG. 2B is a bottom view of the container 2 included in the water-stopping agent discharging device 1. FIG. 3 and 4 are perspective views showing a state in which an opening 6 of a container body 7, which will be described later, is connected to an inlet of the apparatus body 3. FIG. 3 shows the state of the container body 7 before the pump 20 (FIG. 1), which will be described later, is actuated, and FIG. 4 shows the state of the container body 7 after the pump 20 is actuated.

A waterproofing agent discharge device 1 according to the first embodiment has a container 2 (FIG. 2) and a device main body 3 (FIG. 1).

The container 2 includes a container body 7 (FIGS. 2 to 4) having an opening 6 and a lid 8 (FIG. 2) capable of closing the opening 6. is stored. When the opening 6 is closed with the lid 8, the inner space of the container body 7 is sealed, so that the waterproofing agent S stored in the container body 7 is prevented from coming into contact with moisture in the atmosphere. be. As a result, the waterproof agent S stored in the container body 7 can be prevented from foaming and hardening. By removing the lid 8 from the opening 6 of the container body 7, the opening 6 of the container body 7 can be connected to the inlet 5 (FIG. 1) of the device body 3. FIG. From the viewpoint of ensuring that the waterproofing agent S in the container body 7 flows into the inlet 5 of the apparatus body 3, the container body 7 is arranged such that the opening 6 is positioned below the container body 7 as shown in FIG. The opening 6 is preferably connected to the inlet 5 (FIG. 1) with the orientation of 7 adjusted.

The container body 7 is formed using a flexible first material 9 and a flexible second material 10. Both the first material 9 and the second material 10 are It has a square pyramidal shape with an open bottom, and the hexahedral container body 7 is formed by joining the square opening edge of the first material 9 and the square opening edge of the second material 10 (Fig. Reference numeral 12 shown in 2A, FIGS. 3 and 4 indicates a joining line between the opening edge of the first material 9 and the opening edge of the second material 10). The opening 6 of the container body 7 is formed on one slope 13 of the first material 9 . As the first material 9 and the second material 10, for example, a material obtained by laminating low-density polyethylene and nylon as a barrier layer can be used. As the material for the opening 6 and the lid 8, for example, high-density polyethylene can be used. Moreover, it is preferable to pack the container body 7 in a moisture-resistant bag in which aluminum is vapor-deposited. In this way, the waterproofing agent S can be stored in the container body 7 without foaming for a longer period of time than when the container body 7 is an unpackaged product.

The device main body 3 (FIG. 1) flows the waterproofing agent S stored in the container main body 7 from the inlet 5 toward the discharge port 4 while the opening 6 of the container main body 7 is connected to the inlet 5. and can be discharged from the discharge port 4. The details of the configuration of the apparatus main body 3 will be described below.

The device main body 3 includes an electric pump 20 , a first tubular passage 21 and a second tubular passage 22 .

The opening of the upstream end 21a of the first tubular passage 21 constitutes the above-described inlet 5 (hereinafter, the reference numeral 5 of the inlet 5 is used as the reference numeral of the opening of the upstream end 21a of the first tubular passage 21). The downstream end 21 b of the first tubular passage 21 is connected to the inlet 20 a of the pump 20 .

The upstream end 22 a of the second tubular passage 22 is connected to the outlet 20 b of the pump 20 . The downstream end 22b of the second tubular passage 22 is configured by a tubular body provided with a lever 23 and a valve body (not shown), and the opening of the tubular body constitutes the discharge port 4 (hereinafter referred to as the above The reference numeral 22b of the downstream end 22b of the second tubular passage 22 is used as the reference numeral of the tubular body, and the reference numeral 4 of the discharge port 4 is used as the reference numeral of the opening of the tubular body 22b).

By operating the lever 23, the tubular body 22b can be switched between a state in which the opening 4 is closed by the valve body and a state in which the opening 4 is opened.

The pump 20, for example, generates a negative pressure on the side of the inlet 20a to flow the waterproofing agent S stored in the container body 7 to the first tubular passage 21 through the opening 5 (inflow port), and the inlet 20a. , and the water-stopping agent S thus sucked can be discharged from the outlet 20 b and flowed to the second tubular passage 22 .

As the pump 20, for example, a tube pump with rollers and tubes can be used. In this case, the pump 20 (tube pump) generates a negative pressure on the side of the inlet 20a by rotating while the roller crushes the tube, and pushes the waterproofing agent S in the container body 7 through the opening 5 (inflow port). The water-stopping agent S sucked from the entrance 20a is discharged from the outlet 20b and flowed to the second tubular passage 22 by the rotation of the roller. be done.

A pump that can be used as the pump 20 is not limited to a tube pump. A magnet pump, piston pump, gear pump, diaphragm pump, screw pump, or the like may be used as the pump 20 .

The device main body 3 having the above configuration operates the pump 20 in a state in which the opening 6 of the container main body 7 is connected to the opening 5 (inflow port) of the upstream end 21a of the first tubular passage 21, and the lever 23 is opened. By operating to open the opening 4 (discharge port) of the tubular body 22b, the waterproofing agent S stored in the container body 7 is allowed to flow through the first tubular passage 21, the pump 20, and the second tubular passage 22 in this order. It can be discharged from the opening 4 (discharge port).

While the pump 20 is actuated and the waterproof agent S is discharged from the opening 4 (discharge port), the first material 9 and the second material 10 that constitute the container body 7 have flexibility, so that the container body A phenomenon occurs in which the second material 10 is gradually folded toward the side of the first material 9 in which the opening 6 is formed, using the joining line 12 of 7 as a crease (FIG. 4 shows the second material 10 indicates a wrapped state). The above phenomenon occurs when the inside of the container main body 7 becomes in a negative pressure state due to the suction action from the opening 5 (inflow port) due to the operation of the pump 20 . During the period when the pump 20 operates and the water-stopping agent S is discharged from the opening 4 (discharge port), the volume of the container body 7 gradually decreases due to the phenomenon described above, and the water stoppage in the container body 7 is stopped. Since the agent S can be flowed out from the opening 5 (inlet) into the first tubular passage 21 without stopping, the waterproofing agent S can be flowed through the first tubular passage 21, the pump 20, and the second tubular passage 22 without stopping. It can be discharged from the opening 4 (discharge port). It should be noted that it is not essential to use the first material 9 and the second material 10 to form the container body 7, and the container body 7 may be formed using a flexible material other than the materials 9 and 10. (For example, the container body 7 may be formed using a box-shaped flexible material). Even in this case, since the suction force of the pump 20 can cause the deformation of the container body 7 to decrease the volume, the waterproofing agent S in the container body 7 can be continuously supplied to the first tubular passage 21, the pump 20, the second It can flow through the two tubular passages 22 and be expelled from the openings 4 (outlets).

The waterproofing agent S is a polyurethane resin composition comprising an isocyanate group-containing compound, a hydroxyl group-containing compound, and a catalyst, and having an isocyanate group-containing compound content (NCO %) of 4% or more.

The above polyurethane resin composition (water stop agent S) is a polyurethane resin containing urethane bonds obtained by reacting a hydroxyl group-containing compound and an isocyanate group-containing compound. Further, this polyurethane resin may contain a urea bond formed by reacting an amino group-containing compound and an isocyanate group-containing compound.

Examples of isocyanate group-containing compounds include aliphatic polyisocyanate compounds, alicyclic polyisocyanate compounds, aromatic polyisocyanate compounds, and araliphatic polyisocyanate compounds.

Aliphatic polyisocyanate compounds include tetramethylene diisocyanate, dodecamethylene diisocyanate, hexamethylene diisocyanate (HDI), 2,2,4-trimethylhexamethylene diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, lysine diisocyanate, 2- Examples thereof include methylpentane-1,5-diisocyanate and 3-methylpentane-1,5-diisocyanate.

Examples of alicyclic polyisocyanate compounds include isophorone diisocyanate, hydrogenated xylylene diisocyanate, 4,4′-dicyclohexylmethane diisocyanate, 1,4-cyclohexane diisocyanate, methylcyclohexylene diisocyanate, 1,3-bis(isocyanatomethyl)cyclohexane, and the like. is mentioned.

Examples of aromatic polyisocyanate compounds include tolylene diisocyanate, 2,2′-diphenylmethane diisocyanate, 2,4′-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate (MDI), 4,4′-dibenzyl diisocyanate, 1, 5-naphthylene diisocyanate, xylylene diisocyanate, 1,3-phenylene diisocyanate, 1,4-phenylene diisocyanate and the like.

Examples of araliphatic polyisocyanate compounds include dialkyldiphenylmethane diisocyanate, tetraalkyldiphenylmethane diisocyanate, α,α,α,α-tetramethylxylylene diisocyanate and the like.

The above polyisocyanate compounds may be used alone, or two or more of them may be mixed and used.

The hydroxyl group-containing compound used in the polyurethane resin composition, which is the waterproofing agent S, is not particularly limited, and various compounds conventionally used as polyol components in polyurethane resin compositions can be used. Examples of the polyol component include polybutadiene polyol, ethylene glycol, 1,3-propanediol, 1,2-propanediol, 2-methyl-1,3-propanediol, 1,4-butanediol, 1,3- butanediol, 1,4-pentanediol, 1,5-pentanediol, 1,6-hexanediol, 1,5-hexanediol, 1,2-hexanediol, 2,5-hexanediol, octanediol, nonanediol, Decanediol, diethylene glycol, triethylene glycol, dipropylene glycol, cyclohexanediol, trimethylolpropane, glycerin, 2-methylpropane-1,2,3-triol, 1,2,6-hexanetriol, pentaerythritol, polylactone Diol, polylactone triol, ester glycol, polyester polyol, polyether polyol, polycarbonate polyol, acrylic polyol, silicone polyol, fluorine polyol, polytetramethylene glycol, polypropylene glycol, polyethylene glycol, polycaprolactone polyol, hydrogen of hydroxyl-containing liquid polyisoprene and hydrides of hydroxyl group-containing liquid polybutadiene. In the present invention, a hydroxyl group-containing compound that does not contain an amino group is used as the hydroxyl group-containing compound (the above-mentioned hydroxyl group-containing compound) that constitutes the waterproof agent S, and as described later, it contains an amino group. A hydroxyl group-containing compound is used as a catalyst that constitutes the waterproofing agent S.

A plasticizer can be added as needed. For example, phthalate esters such as dioctyl phthalate, diisononyl phthalate, and diundecyl phthalate; adipate esters such as dioctyl adipate and diisononyl adipate; castor oil-based esters such as trioctyl trimellitate and triisononyl trimellitate; and pyromellitic acid esters such as tetraoctyl pyromellitate and tetraisononyl pyromellitate. The amount of the plasticizer used in the polyurethane resin composition of the present invention is preferably 0.1 to 55% by weight, more preferably 25 to 45% by weight, based on 100% by weight of the polyurethane resin composition. If the content of the plasticizer is too high, the foaming ratio will be low and the waterproofing effect may be deteriorated.

Although the catalyst is not particularly limited, conventionally known catalysts used in urethane resin compositions can be used. Examples of the catalyst include metal catalysts such as organic tin catalysts, organic lead catalysts, and organic bismuth catalysts, amine catalysts, and hydroxyl group-containing compounds containing amino groups. Examples of organic tin catalysts include dioctyltin dilaurate, dibutyltin diacetate, dibutyltin dilaurate, and dioctyltin diacetate. Examples of organic lead catalysts include lead octylate, lead octenoate, lead naphthenate and the like. Examples of organic bismuth catalysts include bismuth octylate and bismuth neodecanoate. Examples of amine catalysts include diethylenetriamine, triethylamine, N,N-dimethylcyclohexylamine, N,N,N',N'tetramethylethylenediamine, N,N,N',N″,N″-pentamethyldiethylenetriamine, methylenediamine, dimethylaminoethanol, bis(2-dimethylaminoethyl)ether and the like. Examples of hydroxyl group-containing compounds containing amino groups include aromatic amine polyols and aliphatic amine polyols. Aromatic amine polyols include those obtained by adding known alkylene oxides to aromatic amines such as aniline, toluenediamine, diethyltoluenediamine, 4,4′-diamino-3,3′-diethyldiphenylmethane, and Mannich polyols. can be mentioned, but is not particularly limited. Examples of the aliphatic amine polyol include, but are not limited to, aliphatic amines such as ethylenediamine, hexamethylenediamine, and diethylenetriamine to which a known alkylene oxide is added. Also in these aromatic amine polyols or aliphatic amine polyols, the type of alkylene oxide, the number of additions thereof, and the addition method are not particularly limited. Moreover, an organic metal compound, a metal complex compound, or the like may be used as the catalyst. If the amount of the catalyst is too small, it will take a long time to form a foam, resulting in a poor water-stopping effect.

Various additives such as antioxidants, hygroscopic agents, fillers, antifungal agents, silane coupling agents and the like can be added to the polyurethane resin composition as the waterproofing agent S, if necessary.

When injecting the waterproofing agent S into the crack H of the concrete structure K, the device main body 3 is arranged at the site where the concrete structure K is constructed. Further, the container 2 in which the waterproofing agent S is stored in the container body 7 at the factory and the opening 6 of the container body 7 is closed with the lid 8 is shipped from the factory and transported to the site. For example, when the concrete structure K is a hollow structure buried underground, the device main body 3 is placed in the cavity of the concrete structure K, and the container 2 shipped from the factory is placed in the concrete structure K. carried into the cavity.

Then, as shown in FIG. 5, an injection hole J communicating with the crack H is formed in the concrete structure K. As shown in FIG. In this case, after the injection hole J is formed using a hand drill D or the like, dust accumulated inside the injection hole J is removed by a blower. Incidentally, when cracks H are generated in the concrete of the concrete structure K, an injection hole J is formed in the concrete. Further, when a crack H occurs in the joint of the concrete structure K, an injection hole J is formed in the joint.

Then, an injection plug N, which is connected via a packing or the like to the tubular body 22b forming the downstream end of the second tubular passage 22, is inserted into the injection hole J (FIG. 6). At this time, the tubular body 22b is tightly attached and fixed to the concrete structure K by tightening the tubular body 22b with a wrench or the like. The injection plug N is capable of expanding the rubber R provided on the other end Nb by rotating the one end Na. The injection plug N is fixed to the concrete structure K by being in close contact. A check valve (not shown) is provided on the other end side Nb of the injection plug N. As shown in FIG.

Then, the lid 8 (FIG. 2) is removed from the opening 6 of the container body 7, and the pump 20 is operated with the opening 6 of the container body 7 connected to the mouth 5 (inflow port) as shown in FIG. Then, by operating the lever 23 to open the opening 4 (discharge port), the waterproof agent S stored in the container body 7 is discharged from the opening 4 (discharge port), and the discharged waterproof agent S is discharged. is injected into crack H through injection plug N and injection hole J (FIG. 6). At this time, the water stop agent S injected into the crack H reacts with the water W (FIG. 6) entering the crack H to foam, and the foam hardens. The water stop agent S is injected into the crack H until the crack H is stopped by the hardened foam Sa (FIG. 7).

After it is confirmed that the crack H has stopped water, as shown in FIG. Along with the removal, a material C such as mortar or an organic repair agent is filled into the gap of the injection hole J caused by the removal.

According to the waterproof agent discharge device 1 of the present embodiment, the waterproof agent S stored in the container body 7 is composed of an isocyanate group-containing compound, a hydroxyl group-containing compound, and a catalyst, and the content of the isocyanate group-containing compound (NCO% ) is 4% or more, the foaming time is short. That is, the waterproofing agent S stored in the container main body 7 has a feature that the foaming ratio is large after a predetermined time has passed since contact with water.

According to the waterproofing agent discharge device 1 of the present embodiment, since the opening 6 of the container body 7 can be closed with the lid 8, the waterproofing agent S can be cracked on site from the time the waterproofing agent S is manufactured in a factory or the like. It is possible to prevent the waterproofing agent S stored in the container body 7 from coming into contact with moisture in the atmosphere until immediately before the operation of injecting the agent S. Therefore, it is possible to prevent the water-stopping agent S from foaming and hardening until the work of injecting the water-stopping agent S into the crack H is performed. Therefore, when the water-stopping agent S is injected into the crack H, the flow of the water-stopping agent S is not hindered by the foamed material of the water-stopping agent S, and the water-stopping agent S with a short foaming time is smoothly injected into the crack H. can be injected. As a result, the water stoppage of the crack H can be completed in a short time, so the amount of the water stop agent S to be injected into the crack H can be reduced, and the labor required for checking the water stoppage effect can be reduced. Moreover, since the water stoppage of the crack H can be completed in a short time, the amount of the water stop agent S leaking from the crack H can be reduced. Therefore, it is possible to reduce the labor and cost for treating the waterproof agent S leaking from the crack H.

In the first embodiment, as a method of using the waterproofing agent discharge device 1, after the following waterproofing agent discharging step is performed for the purpose of injecting the waterproofing agent S into the crack H, the following filling liquid It is preferable that the filling process is executed (Fig. 8(A) shows the state when the waterproofing agent discharging process is executed, and Fig. 8(B) shows the state when the filling liquid filling process is executed. status).

Water-stopping agent discharge step: With the opening 6 of the container body 7 connected to the opening 5 (inflow port), the water-stopping agent S stored in the container body 7 is discharged from the opening 5 (inflow port) to the opening 4 (discharge). outlet) to discharge from the opening 4 (discharge port).

Filling liquid filling step: The opening 26 of the filling liquid container 25 for storing the filling liquid Z that is incompatible with the water-stopping agent S and inhibits the reaction of the water-stopping agent S is connected to the opening 5 (inlet). In this state, the filling liquid Z stored in the filling liquid container 25 is made to flow from the opening 5 (inflow port) toward the opening 4 (discharge port), and flow from the opening 5 (inflow port) to the opening 4 (discharge port). A step of filling the flow path of the apparatus main body 3 with the filling liquid Z.

If the filling liquid filling process is performed after the waterproofing agent discharging process as described above, the filling liquid Z coats the waterproofing agent S remaining in the flow path of the device main body 3 . Therefore, it is possible to prevent the waterproofing agent S remaining in the flow path of the apparatus main body 3 from coming into contact with water, foaming and hardening (the above-mentioned flow path includes the cavity of the first tubular path 21 and the pump 20). and the channel formed by the cavity of the second tubular passage 22). Therefore, when the water-stopping agent discharging process is performed next time, the water-stopping agent S flowing through the flow passage of the device main body 3 pushes away the water-stopping agent S remaining in the flow passage together with the filling liquid Z, and the opening 4 is discharged. It can be discharged from (ejection port). Therefore, it is possible to prevent the foam of the water-stopping agent S from interfering with the flow of the water-stopping agent S in the next step of discharging the water-stopping agent. Therefore, in the next water-stopping agent discharging process, the water-stopping agent S can be smoothly flowed through the flow path of the device main body 3, so that the water-stopping agent discharging device 1 can stably maintain the function of discharging the water-stopping agent. .

As the filling liquid Z, it is possible to use a filling liquid such as lithium grease, silicon grease, petroleum jelly, or the like, which can block the contact between the waterproofing agent S and the air. Further, in the filling liquid filling process, filling the flow path of the device main body 3 with the filling liquid Z is performed by operating the pump 20 until it is confirmed that the filling liquid Z is discharged from the opening 4 (discharge port). , can be realized by causing the filling liquid Z to flow through the channel of the apparatus main body 3 . Further, after the flow path of the device main body 3 is filled with the filling liquid Z, the filling liquid Z may be prevented from leaking from the opening 4 (discharge port) by closing the opening 4 (discharge port) with a lid. . Further, if there is no risk of leakage of the filling liquid Z from the opening 4 (discharge port) due to the high viscosity of the filling liquid Z, the opening 4 (discharge port) does not need to be closed with a lid.

Next, a second embodiment of the invention will be described.

FIG. 9 is a side view showing the waterproof agent discharge device 30 according to the second embodiment, and FIGS. 10 and 11 are sectional views of the waterproof agent discharge device 30 according to the second embodiment. FIG. 12 is a perspective view showing the container 31 included in the waterproof agent discharge device 30. As shown in FIG.

A waterproof agent discharge device 30 according to the second embodiment has a container 31 (FIG. 12) and a device body 32 (FIGS. 9 to 11).

The container 31 (FIG. 12) includes a container body 34 (FIGS. 10 to 12) having an opening 33 and a lid 35 (FIG. 12) capable of closing the opening 33, and is shown in the first embodiment. The waterproofing agent S with a short bubbling time is stored inside the container body 34 .

The container main body 34 is formed using a flexible material and has a bellows shape. When the opening 33 is closed with the lid 35, the inner space of the container body 34 is sealed, thereby preventing the waterproofing agent S stored in the container body 34 from coming into contact with moisture in the atmosphere. be. As a result, the waterproofing agent S stored in the container body 34 can be prevented from foaming and hardening. By removing the lid 35 from the opening 33 of the container body 34, the opening 33 of the container body 34 can be connected to the inlet 40 (FIGS. 10 and 11) of the device body 3. FIG. For example, polyethylene can be used as the material of the container body 34 . Moreover, it is preferable to pack the container body 34 in a moisture-resistant bag in which aluminum is vapor-deposited. In this way, the waterproofing agent S can be stored in the container body 34 without foaming for a longer period of time than when the container body 34 is an unpackaged product.

The device main body 32 (FIGS. 9 to 11) supplies the waterproofing agent S stored in the container main body 34 from the inlet 40 to the outlet 41 while the opening 33 of the container main body 34 is connected to the inlet 40. It can be discharged from the discharge port 41 by directing it. Details of the configuration of the device body 32 will be described below.

The device main body 32 includes a cylinder 42 , a spring 43 , a manual pump 44 and a tubular nozzle 45 .

The spring 43 has a spiral shape and is arranged in an inner space on one end side of the cylinder 42 (hereinafter, the one end side of the cylinder 42 is abbreviated as “one end side”, and the other end of the cylinder 42 is side is appropriately abbreviated as “other end side”). A plate-like body 46 is attached to the other end of the spring 43 , and the other end of the chain 47 is hooked to the plate-like body 46 . The chain 47 passes through the inside of the spiral of the spring 43 , the end on one end side of the chain 47 protrudes from an opening formed at one end of the cylindrical body 42 , and the ring 49 extends from one end of the chain 47 . attached to the side end.

The pump 44 includes a head 50 detachably attached to the other end of the cylinder 42, a lever 51 attached to the head 50, and a piston 52 attached to the lever 51. The lever 51 can be tilted manually. can be done with

The head 50 has an inlet port that constitutes the inlet 40, a cylinder hole 53 that communicates with the inlet port (inlet 40), and an outlet that switches between communication and blocking of communication with the cylinder hole 53 by opening and closing a valve 54. A port 55 is formed (hereinafter, the reference numeral 40 of the inlet port 40 is used as the reference numeral of the inlet port).

The cylinder hole 53 extends in a direction perpendicular to the longitudinal direction of the cylindrical body 42, and an opening 53a (FIG. 10) of the cylinder hole 53 is formed on the outer surface of the head 50. As shown in FIG. The outlet port 55 is formed on the inner side of the cylinder hole 53 , and the inlet port 40 is formed closer to the opening 53 a than the outlet port 55 is.

The valve 54 opens and closes according to the pressure inside the cylinder hole 53 . A ball valve comprising a ball and a spring, for example, can be used as the valve 54 . In the ball valve, a spring presses a ball toward one end of the cylindrical body 43 to block communication between the outlet port 55 and the cylinder hole 53. When the pressure in the cylinder hole 53 exceeds a predetermined value, Then, the spring is compressed and the ball is lifted, so that the cylinder hole 53 and the outlet port 55 are in communication. It should be noted that the use of a ball valve as the valve 54 is not essential, and any valve other than the ball valve that can be opened and closed according to the pressure in the cylinder hole 53 can be used as the valve 54 .

The piston 52 is inserted into the cylinder hole 53 through an opening 53a of the cylinder hole 53. By operating the lever 51, the piston 52 can be advanced to the inner side of the cylinder hole 53 as shown in FIG. As shown in FIG. 10, the piston 52 can be retracted toward the opening 53a.

One end 45a of the nozzle 45 is connected to the outlet port 55, and the opening of the other end 45b of the nozzle 45 constitutes the discharge port 41 (hereinafter, the opening of the other end 45b of the nozzle 45 is referred to as discharge port 41). 41 for outlet 41).

In the device main body 32 described above, the container main body 34 from which the lid 35 is removed from the opening 33 is placed in the internal space on the other end side of the cylindrical body 42 with the head 50 removed from the other end of the cylindrical body 42 . can be placed. After that, by attaching the head 50 to the other end of the cylindrical body 42, the opening 33 of the container body 34 can be connected to the inlet port 40 (inlet).

Arranging the container main body 34 in the inner space on the other end side of the cylindrical body 42 can be performed by gripping the ring 49 and pulling the chain 47 with the head 50 removed from the other end of the cylindrical body 42 , thereby opening the plate. The spring 43 is compressed by moving the body 46 to one end of the cylindrical body 42, and the container main body 34 is inserted into the space in the cylindrical body 42 created by this compression. After that, the head 50 is attached to the other end of the cylindrical body 42 , and the tension of the chain 47 is stopped to apply the elastic force of the spring 43 to the container body 34 via the plate-like object 46 , thereby opening the container body 34 . The portion 33 is connected to the inlet port 40 (inlet), and the spring 43 presses the container body 34 toward the other end of the cylinder 42 .

Note that the ring 49 and the chain 47 may not be provided on the device main body 32 . In this case, the work of inserting the container main body 34 into the space inside the cylindrical body 42 and the work of attaching the head 50 to the other end of the cylindrical body 42 are performed while resisting the elastic force of the spring 43, whereby the container main body The opening 33 of 34 is connected to the inlet port 40 (inlet), and the spring 43 presses the container body 34 toward the other end of the cylinder 42 . Also, the plate-like body 46 may not be provided on the device main body 32 . In this case, the elastic force of the spring 43 is applied directly to the container main body 34 , so that the container main body 34 is pressed against the other end side of the cylinder 42 .

Then, with the opening 33 of the container body 34 connected to the inlet port 40 (inflow port) as described above and the container body 34 pressed toward the other end of the cylindrical body 42 by the spring 43, the lever 51 is operated. As shown in FIG. 10, the piston 52 is retracted to allow communication between the inside of the container body 34 and the cylinder hole 53 via the inlet port 40 (inlet). can be supplied to the cylinder bore 53 via the inlet port 40 (inlet).

By operating the lever 51, the piston 52 is advanced as shown in FIG. can be supplied to the interior of the nozzle 45 via the outlet port 55 and discharged from the opening 41 (discharge port) at the other end of the nozzle 45 .

When injecting the water-stopping agent S into the cracks H of the concrete structure K, the device body 32 is transported to the site where the concrete structure K is constructed, and the water-stopping agent S is stored in the container body 34 at the factory. The container 31 in which the opening 33 of the container body 34 is closed with the lid 35 is shipped from the factory and transported to the site.

Then, similarly to the work shown in FIG. 5 of the first embodiment, an injection hole J communicating with the crack H is formed in the concrete structure K. If cracks H are formed in the concrete, an injection hole J is formed in the concrete. If the crack H occurs in the joint, an injection hole J is formed in the joint.

Then, the container body 34 from which the lid 35 is removed from the opening 33 is arranged in the internal space of one end side of the cylindrical body 42, and the inlet port 40 (inflow port) is connected to the opening 33 of the container body 34. In this state, an injection nozzle connected to the other end 45b of the nozzle 45 via packing or the like is inserted into the injection hole J (FIG. 5). At this time, the injection nozzle is fixed to the concrete structure K by tightening the injection nozzle with a wrench or the like. As for the above injection nozzle, like the injection nozzle N shown in the first embodiment, it can be fixed to the concrete structure K by rotating one end to expand the rubber provided on the other end. A plug with a check valve on the other end can be used.

By operating the lever 51 to retract the piston 52 toward the opening 53a (FIG. 10) and operating the lever 51 to move the piston 52 forward toward the inner side of the cylinder hole 53 (FIG. 11), the container body 7 The stored waterproofing agent S is discharged from the opening 41 (discharge port) of the nozzle 45, and the discharged waterproofing agent S is injected into the crack H through the injection nozzle and the injection hole J (see FIG. 5). is done. At this time, the water stop agent S injected into the crack H reacts with the water entering the crack H to foam, and the foam hardens. The operation of the lever 51 described above is repeated until the crack H is sealed by the hardened foam.

After it is confirmed that the crack H has stopped water, the other end of the injection plug is removed from the injection hole J by hitting the other end of the injection plug with a hammer or the like, and the injection hole J created by this removal is removed. Filling of the gaps of mortar, organic repair agents, etc. is carried out.

According to the waterproof agent discharge device 30 of the second embodiment, since the opening 33 of the container body 34 can be closed with the lid 35, cracks H can be stopped on site from the time the waterproof agent S is manufactured in a factory or the like. It is possible to prevent waterproof agent S stored in container body 34 from coming into contact with moisture in the atmosphere until immediately before the operation of injecting liquid medication S is performed. Therefore, it is possible to prevent the water-stopping agent S from foaming and hardening until the work of injecting the water-stopping agent S into the crack H is performed. As a result, when the water-stopping agent S is injected into the cracks H, the flow of the water-stopping agent S is not hindered by the foamed material of the water-stopping agent S, and the water-stopping agent S with a short foaming time can be smoothly injected into the cracks H. can be injected into As a result, water stoppage of the crack H can be completed in a short time.

Further, in the second embodiment, it is preferable to perform the following filling liquid filling step after performing the following waterproofing agent discharging step for the purpose of injecting the waterproofing agent S into the cracks (Fig. 13 (A ) shows the state when the waterproofing agent discharging step is performed, and FIG. 13B shows the state when the filling liquid filling step is performed).

Water-stopping agent discharge step: With the opening 33 of the container body 34 connected to the inlet port 40 (inflow port), the water-stopping agent S stored in the container body 34 is discharged from the inlet port 40 (inflow port) to the opening 41 . (discharge port) to discharge from the opening 41 (discharge port).

Filling liquid filling step: An opening 61 of a filling liquid container 60 for storing a filling liquid Z that is incompatible with the water-stopping agent S and inhibits the reaction of the water-stopping agent S is connected to the inlet port 40 (inlet). In this state, the filling liquid Z stored in the filling liquid container 60 is allowed to flow from the inlet port 40 (inlet) toward the opening 41 (discharge port), and is discharged from the inlet port 40 (inflow port) to the opening 41 (discharge port). ) of the device main body 32 with the filling liquid Z.

If the filling liquid filling process is performed after the waterproofing agent discharging process as described above, the filling liquid Z coats the waterproofing agent S remaining in the flow path of the device main body 32 . Therefore, it is possible to prevent the waterproofing agent S remaining in the flow path of the device main body 32 from coming into contact with water, foaming and hardening (the above flow path includes the inlet port 40 (inflow port), the cylinder hole 53, the exit port 55, the flow path formed by the cavity of the nozzle 45). Therefore, when the water-stopping agent discharging process is performed next time, the water-stopping agent S flowing through the flow passage of the device main body 32 pushes away the water-stopping agent S remaining in the flow passage together with the filling liquid Z, thereby opening 41 . It can be discharged from (ejection port). Therefore, it is possible to prevent the foam of the water-stopping agent S from interfering with the flow of the water-stopping agent S in the next step of discharging the water-stopping agent. Therefore, in the next water-stopping agent discharging process, the water-stopping agent S can be smoothly discharged from the discharge port, so that the water-stopping agent discharging device 30 can stably maintain the function of discharging the water-stopping agent.

As the filling liquid Z, a filling liquid capable of blocking the contact between the waterproof agent S and the air, such as lithium grease, silicon grease, or vaseline shown in the first embodiment, can be used. In addition, in the filling liquid filling process, filling the flow path of the device main body 32 with the filling liquid Z involves moving the piston 52 backward and forward until it is confirmed that the filling liquid Z is discharged from the opening 41 (discharge port). This can be realized by operating the lever 51 to allow the filling liquid Z to flow through the flow path. Further, after the flow path of the device main body 32 is filled with the filling liquid Z, the filling liquid Z may be prevented from leaking from the opening 41 (discharge port) by closing the opening 41 (discharge port) with a lid. . Further, if there is no risk of leakage of the filling liquid Z from the opening 41 (discharge port) due to the high viscosity of the filling liquid Z, the opening 41 (discharge port) does not need to be closed with a lid.

The present invention is not limited to those shown in the above embodiments, and can be modified in various ways.

For example, the device main body included in the waterproof agent discharge device of the present invention is not limited to the device main bodies 3 and 32 shown in the above embodiments, and the container main body is connected to the inlet with the opening of the container main body. It can be a system composed of various devices or a plurality of devices capable of flowing the retained water-stopping agent S from the inflow port toward the discharge port and discharging it from the discharge port.

Further, the container provided in the water-stopping agent discharge device of the present invention is not limited to the containers 2 and 31 shown in the above embodiments, and various types of containers that can close the opening of the container main body for storing the water-stopping agent S with a lid can be used. can be a container.

Further, in the above-described embodiment, an example of injecting the waterproofing agent S discharged from the devices 1 and 30 into the crack H using the injection plug was shown. The waterproofing agent S ejected from the ejection openings 4, 41 of the devices 1, 30 may be injected into the crack H without using an injection plug, such as by inserting it.

Cracks to which the waterproofing agent discharge device of the present invention is applied are not limited to cracks H in concrete structures K. The waterproofing agent discharging device of the present invention can be applied to various cracks that require water stoppage.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to examples and comparative examples. However, the present invention is not limited to the examples.

The raw materials shown below are blended at the weight percentages shown in Table 1, put into a reaction vessel equipped with a heating, cooling, and decompression device, and after the inside of the vessel is replaced with nitrogen, dehydrated at 80 ° C. for 1 hour to obtain a prepolymer. Water blocking agents (polyurethane resin compositions) of Examples 1 to 6 and Comparative Examples 1 to 6 were obtained.

・Isocyanate group-containing compound: Polyisocyanate Product name: MR-200 (manufactured by Tosoh Corporation)
・Hydroxyl group-containing compound: Polyether polyol Product name: PP-2000 (manufactured by Sanyo Chemical Industries, Ltd.)
・Plasticizer 1: Phthalic acid ester Product name: DOA (manufactured by J-Plus Co., Ltd.)
・Plasticizer 2: Phthalic acid ester Product name: DUP (manufactured by J-Plus Co., Ltd.)
・Foam stabilizer: Silicone-based foaming agent Product name: SF-2639F (manufactured by Dow Toray Co., Ltd.)
・ Catalyst 1: Amine-based catalyst DABCO33LV (manufactured by Evonik Japan Co., Ltd.)
・ Catalyst 2: amine catalyst POLYCAT8 (manufactured by San-Apro Co., Ltd.)
・Catalyst 3: Tin-based catalyst U-100 (manufactured by Nitto Kasei Co., Ltd.)

The following tests were conducted using the waterproof agents (polyurethane resin compositions) of Examples 1 to 6 and Comparative Examples 1 to 6 prepared as described above, and the test results shown in Table 1 were obtained.

Method 1
A base material and a catalyst are mixed in a predetermined ratio in the container main body 7 shown in the first embodiment, and the waterproof agent discharge device 1 (FIG. 1) and the injection plug N are used in the same manner as in the first embodiment. and pour it into the leakage point. A high-pressure grease gun (HPG-G MODEL No.851985, No.852164) manufactured by Yamada Corporation was used as the tubular body 22b provided in the waterproof agent discharge device 1, and the pump provided in the waterproof agent discharge device 1 was used. As 20, an electric test pump EP470 manufactured by Asada Co., Ltd. was used, and as an injection plug N, Shot Plug Slim manufactured by Erephon Kasei Kogyo Co., Ltd. was used.
◯: Foaming ratio is sufficient and water leakage is stopped.
Δ: Foaming ratio is lower than ◯, but water leakage is stopped.
x: The amount of water leakage is almost unchanged, and the water leakage does not stop.

Method 2
300 g of the base material and a catalyst of a predetermined ratio are mixed in the container main body 34 shown in the second embodiment, and the waterproof agent discharge device 30 (FIGS. 9 to 11) and the injection plug are manufactured in the same manner as in the second embodiment. (the volume of the container body 31 is 400 cc). Shot Plug Slim manufactured by Elephone Kasei Kogyo Co., Ltd. was used as an injection plug.
◯: Foaming ratio is sufficient and water leakage is stopped.
Δ: Foaming ratio is lower than ◯, but water leakage is stopped.
x: The amount of water leakage is almost unchanged, and the water leakage does not stop.

150 g of a base and a catalyst for the base are added to a 300 cc PP cup of the polyurethane resin composition before curing, and the mixture is rapidly and uniformly stirred with a stirring rod or the like for 30 seconds. The viscosity was measured using a Brookfield viscometer, and workability was evaluated according to the following evaluation criteria.
○: Viscosity less than 1000 mPa s △: Viscosity 1000 to 3000 mPa s
×: Viscosity exceeds 3000 mPa s

20 g of the base and the catalyst for it are added to a curable 500 cc PP cup, and stirred uniformly for 10 seconds with a stirring rod or the like. After that, 10% by weight of water is added to the base, and the mixture is rapidly and uniformly stirred with a stirring rod or the like for 10 seconds. Touch the surface of the foam with the tip of a match every 10 seconds to see how long it takes for the liquid to stop sticking.
◯: Liquid stopped adhering to the tip of the match within 10 minutes after water was added and stirred. ×: It took 10 minutes or more for the liquid to stop adhering to the tip of the match after water was added and stirred.

Foaming 1
In a 500cc PP cup, 20g of the base and the catalyst for it are added, and the mixture is rapidly and uniformly stirred with a stirring rod or the like for 10 seconds. After that, 10% by weight of water is added to the base, and the mixture is rapidly and uniformly stirred with a stirring rod or the like for 10 seconds. Check the expansion ratio 30 seconds after the end of stirring.
○: The expansion ratio is 3 times or more ×: The expansion ratio is less than 3 times

Foamability 2
In a 500cc PP cup, 20g of the base and the catalyst for it are added, and the mixture is rapidly and uniformly stirred with a stirring rod or the like for 10 seconds. After that, 10% by weight of water is added to the base, and the mixture is rapidly and uniformly stirred with a stirring rod or the like for 10 seconds. After completion of stirring, the foaming ratio is checked after 24 hours in an environment of 23°C.
○: The expansion ratio is 10 to 35 times △: The expansion ratio is 5 to 9 times ×: The expansion ratio is 1 to 4 times

One hour after forming the shape-retaining foam, it is checked whether the shape of the cured product is retained.
○: The shape is retained △: The cured product shrinks slightly, but the shape is retained ×: The shape is not retained

From the test results of construction method 1, construction method 2, and foamability 1 and 2, the waterproofing agents of Examples 1 to 6, compared to the waterproofing agents of Comparative Examples 1 to 6, have passed a predetermined time after contact with moisture. It was confirmed that the subsequent foaming ratio was high (foaming time was short). In addition, from the test results of Construction Method 1 and Construction Method 2, when using the waterproofing agents of Examples 1 to 6, water leakage is stopped more reliably than when using the waterproofing agents of Comparative Examples 1 to 6. confirmed that it is possible. In addition, from the results of the foam shape retention test, when the waterproofing agents of Examples 1 to 6 were used, water was stopped by the foam compared to the case of using the waterproofing agents of Comparative Examples 1 to 6. It was confirmed that the state can be stably maintained.

1, 30 waterproof agent discharge device,
2,31 container,
3, 32 device body,
4 discharge port (opening of tubular body),
5 inlet (opening at the upstream end of the first tubular passage)
6, 33 the opening of the container body,
7, 34 container body,
8,35 lid,
9 first material,
10 second material,
20, 44 pump,
20a pump inlet;
20b pump outlet;
21 first tubular passage,
21a the upstream end of the first tubular passage;
21b the downstream end of the first tubular passage;
22 second tubular passage;
22a the upstream end of the second tubular passage;
22b the downstream end (tube) of the second tubular passage;
25, 60 container for resin,
40 inlet (inlet port),
41 outlet (opening at the other end of the nozzle),
42 cylinder,
43 springs,
45 nozzles,
45a one end of the nozzle 45b the other end of the nozzle 50 head,
51 lever,
52 piston,
53 cylinder hole,
54 valves,
55 exit port;
S Waterproofing agent Z Filling liquid

Claims (4)

a container comprising a container body having an opening, and a lid capable of closing the opening, wherein a waterproofing agent is stored in the container body;
With the opening of the container body connected to the inflow port, the waterproofing agent stored in the container body can be caused to flow from the inflow port toward the discharge port and be discharged from the discharge port. a device body, wherein the waterproofing agent comprises an isocyanate group-containing compound, a hydroxyl group-containing compound, and a catalyst, and the isocyanate group-containing compound content (NCO%) is 4% or more, a polyurethane resin composition;
The device body comprises a pump, a first tubular passage, and a second tubular passage,
The opening at the upstream end of the first tubular passage constitutes the inlet,
a downstream end of the first tubular passage is connected to an inlet of the pump;
the upstream end of the second tubular passage is connected to the outlet of the pump;
the downstream end of the second tubular passage is configured by a tubular body provided with a lever and a valve body;
The discharge port is formed by an opening of the tubular body, and switching between a state in which the opening of the tubular body is closed by the valve body and a state in which the opening of the tubular body is opened is performed by operating the lever. is possible and
In a state where the opening of the container body is connected to the opening at the upstream end of the first tubular passage, the pump is operated to open the opening of the tubular body by operating the lever. The water-stopping agent stored in the main body is allowed to flow through the first tubular passage, the pump, and the second tubular passage in this order, and be discharged from the opening of the tubular body,
The container body is formed using a flexible first material and a flexible second material,
The first material and the second material are in the shape of a square pyramid with an open bottom, and the square opening edge of the first material and the square opening edge of the second material are joined together, A waterproofing agent discharge device in which the container main body is formed and the opening is formed in one inclined surface of the first material. A method for using a waterproofing agent discharge device,
The waterproofing agent discharge device includes:
a container comprising a container body having an opening, and a lid capable of closing the opening, wherein a waterproofing agent is stored in the container body;
With the opening of the container body connected to the inflow port, the waterproofing agent stored in the container body can be caused to flow from the inflow port toward the discharge port and be discharged from the discharge port. a device body, wherein the waterproofing agent comprises an isocyanate group-containing compound, a hydroxyl group-containing compound, and a catalyst, and the isocyanate group-containing compound content (NCO%) is 4% or more, a polyurethane resin composition;
The method of using the waterproofing agent discharge device is as follows:
a waterproofing agent discharging step;
a filling liquid filling step that is performed after the waterproofing agent discharging step is performed;
In the water-stopping agent discharging step, the water-stopping agent stored in the container body is flowed from the inlet toward the outlet while the opening of the container body is connected to the inlet, It is discharged from the discharge port, and in the filling liquid filling step, the filling liquid has a higher viscosity than the water- stopping agent and is not compatible with the water-stopping agent, and hardening reaction occurs upon contact with the water-stopping agent or water. The filling liquid stored in the filling liquid container is allowed to flow from the inflow port toward the discharge port in a state where the opening of the filling liquid container that stores the filling liquid that does not occur is connected to the inflow port. and a method of use in which the flow path of the device main body extending from the inlet to the outlet is filled with the filling liquid. The device body comprises a pump, a first tubular passage, and a second tubular passage,
The opening at the upstream end of the first tubular passage constitutes the inlet,
a downstream end of the first tubular passage is connected to an inlet of the pump;
the upstream end of the second tubular passage is connected to the outlet of the pump;
the downstream end of the second tubular passage is configured by a tubular body provided with a lever and a valve body;
The discharge port is formed by an opening of the tubular body, and switching between a state in which the opening of the tubular body is closed by the valve body and a state in which the opening of the tubular body is opened is performed by operating the lever. is possible and
In a state where the opening of the container body is connected to the opening at the upstream end of the first tubular passage, the pump is operated to open the opening of the tubular body by operating the lever. The use according to claim 2, wherein the water-stopping agent stored in the main body is allowed to flow through the first tubular passage, the pump, and the second tubular passage in that order, and be discharged from the opening of the tubular body. Method. The container body is formed using a flexible material and has a bellows shape,
The device body includes a cylinder, a spring, a pump, and a tubular nozzle,
The spring is arranged in an internal space on one end side of the cylinder, and the pump comprises a head detachably attached to the other end of the cylinder, a lever attached to the head, and a piston attached to the lever. The head is formed with an inlet port that constitutes the inlet, a cylinder hole that communicates with the inlet port, and an outlet port that switches between communication and blocking of communication with the cylinder hole by opening and closing a valve. The valve opens and closes according to the pressure in the cylinder hole, the piston is inserted into the cylinder hole from the opening of the cylinder hole, and the operation of the lever causes the The piston can be advanced to the innermost side of the cylinder hole and can be retracted to the opening side of the cylinder hole, and the outlet port is formed on the innermost side of the cylinder hole and the inlet port is formed closer to the opening side of the cylinder hole than the exit port, one end of the nozzle is connected to the exit port, the opening of the other end of the nozzle constitutes the discharge port, and the With the head removed from the other end of the cylinder, the container body from which the lid has been removed from the opening is placed in the inner space of the other end of the cylinder, and then the other end of the cylinder is placed. By attaching the head to the opening of the container body, the opening of the container body is connected to the inlet port, and the container body is pressed against the other end side of the cylindrical body by the spring. portion is connected to the inlet port, and the container body is pushed toward the other end of the cylindrical body by the spring, the piston is retracted, and the inside of the container body is pushed through the inlet port. By communicating with the cylinder hole, the waterproof agent stored in the container body can be supplied to the cylinder hole through the inlet port. By increasing the internal pressure to open the valve, the waterproofing agent supplied to the cylinder hole is supplied to the nozzle through the outlet port, and the opening of the other end of the nozzle is supplied. 3. The method of use according to claim 2, wherein it is possible to discharge from.

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