WO2018160002A1

WO2018160002A1 - Waterproof integrated pc construction method using reinforced waterproof sheet laminated with non-woven fabric

Info

Publication number: WO2018160002A1
Application number: PCT/KR2018/002461
Authority: WO
Inventors: 윤종구; 윤병준; 윤소진
Original assignee: 주식회사 안센
Priority date: 2017-03-02
Filing date: 2018-02-28
Publication date: 2018-09-07

Abstract

The present invention relates to a waterproof integrated PC construction method capable of ensuring a construction duration reduction effect and work stability in waterproof structure construction by forming an integrated waterproof layer in a PC member manufacturing process. The present invention is characterized by the use of a waterproof sheet having water-repellent yarn mesh inserted in the middle thereof and non-woven fabric laminated on the surface thereof in order to improve integration of the waterproof sheet and concrete and improve durability in a PC member manufacturing process.

Description

[Correction 29.03.2018] by Rule 26. 방수 Waterproof integrated PC method using reinforced waterproof sheet laminated with non-woven fabric.

The present invention relates to a waterproof integrated PC method that can ensure the air shortening effect and the stability of the work in the waterproof structure construction by integrally forming a waterproof layer in the PC member manufacturing process.

Semiconductor wastewater treatment plant, chemical material facility, concrete culvert, base structure, water tank, reservoir, reservoir, water purification plant, salt field, etc. are constructed of concrete or chemically treated corrosion-resistant steel, etc. do.

Waterproofing works are generally applied with a wet method of applying epoxy resin, polyurea or glass fiber reinforced thermosetting resin (FRP) .However, the wet method is not only troublesome in the field work, but also harmful environment and the uniform waterproof quality is secured. It is difficult to do. In particular, the FRP lining method is a method of laminating polyester resin and glass fiber sheet in the field.The resin contains VOCS-containing organic solvent, which makes the work environment dangerous and hard to crack, drop, and sag. In addition, there are disadvantages such as costing and itching due to the scattering of glass powder waste during repair.

Recently, a dry method of attaching and installing stainless steel or polyethylene-based waterproof sheets is also applied. However, the use of stainless steel is not only disadvantageous in that the initial cost is high and the installation time is long, and chemically reacts at the welded portion of the stainless steel to cause contamination of the storage water or to reduce the tensile strength. On the other hand, when a polyethylene-based waterproof sheet is used, the waterproof sheet is made to have a thickness of about 3mm, so that the waterproof sheet is easily lifted from the overlapping joint, and there is a problem of foreign matter such as water staining on the overlapping joint.

In order to improve the disadvantages of the conventional waterproof lining construction as described above, a waterproof lining method using a PP-based waterproof roll sheet has been developed and has been patented Korea Patent No. 10-1142123. By the way, the conventional waterproof lining method, including the Republic of Korea Patent No. 10-1142123 is a method of attaching the waterproof sheet to the surface of the pre-constructed concrete structure. Such concrete pre-installed waterproof sheet post-attachment method requires a separate construction period because concrete construction and waterproof sheet construction are performed in separate processes. By switching from the conventional attachment method of such a waterproof sheet, the present inventors have developed a waterproof integrated concrete construction method using a waterproof sheet in a concrete construction process.

On the other hand, waterproof lining construction should be made to prevent leaks and to easily find defects in the event of a waterproof defect. In general, waterproof lining construction is applied while applying an adhesive such as a ceramic coat on the base surface and attaching a waterproof sheet, and installs a tacker pin to stably prevent the waterproof sheet from lifting or falling until the adhesive is cured. However, since the tarpaulin is installed while directly damaging the waterproof sheet and the base surface, it was a cause of waterproofing. In addition, there is a high risk of water leakage due to lack of watertightness between joints between waterproof sheets in waterproof lining construction, but it is difficult to repair the leak due to difficulty in estimating the leaked part.

The present invention was developed to improve the conventional waterproof lining method by attaching the concrete sheet waterproof post-installation, by combining the waterproof sheet integrally with the concrete in the PC member manufacturing process can be omitted or simplified on-site waterproofing process overall There is a technical problem in providing a waterproof integrated PC method that can realize workability improvement and shortening of air.

In addition, the present invention is to provide a waterproof integrated PC method with improved water tightness at the joint between the waterproof sheet and the joint between the PC member.

In addition, the present invention is to provide a waterproof integrated PC method that can be stably attached to the surface of the concrete sheet, and also to detect the leak in the waterproof sheet joint portion frequently leak occurs to perform the necessary defect repair in a timely manner. do.

In order to solve the above technical problem, the present invention provides a waterproof integrated PC method using a non-woven fabric reinforced waterproof sheet.

Waterproof integrated PC method according to the present invention is a waterproof sheet made of a PE-based water-repellent mesh is placed in the middle of the waterproof layer by any one of PE, PP, TPO, PVC, and the non-woven fabric laminated on the inner surface of the waterproof layer, PC ( Precast Concrete) the first step of preparing a formwork for producing the member (200); A second step of fixing the waterproof sheet to the form while closely contacting the waterproof layer of the waterproof sheet to the formwork surface; A third step of curing by pouring concrete onto the nonwoven fabric of the waterproof sheet; Removing the formwork and completing the waterproof integral PC member having the waterproof sheet integrally bonded to the concrete surface; And a fifth step of constructing the structure while using the waterproof integrated PC member.

In the waterproof integrated PC method as described above, the waterproof sheets may be connected to each other by means of joints or overlapping joints, and the joints may be treated by extrusion welding or hot-air welding, and the joints may be connected to the joints. Discoloration ink or leak detection film sensor can be processed. In addition, the waterproof sheet may be applied to the bending type waterproof sheet prepared by cutting the grinder in the middle to form a joint groove, bent in the corner or out corner along the joint groove, and then extrusion welding the joint groove.

According to the present invention, the following effects can be expected.

First, because the waterproof layer is working at the same time during the construction of the concrete frame can shorten the air. In particular, in the prior art, after the construction of the structure, the waterproofing layer is inevitable by constructing the waterproofing layer, but the work can be omitted by combining the waterproofing layer with the formwork so that a separate waterproofing layer construction process can be omitted. have.

Second, since the waterproof sheet laminated with the nonwoven fabric is integrated with the PC member during the PC member manufacturing process, the waterproof sheet can be stably attached to the concrete surface by securing the bonding force with the concrete by the nonwoven fabric. In addition, since the water repellent mesh is placed in the middle of the waterproof sheet, it can be completed with a PC member having a water repellent function and enhanced ability to cope with shrinkage expansion deformation.

Third, since the joints between the waterproof sheets and the joints between the PC members are treated by extrusion welding or hot air welding with the same material as the waterproof layer, the PC structure can be completed with improved watertightness. Furthermore, since the water-coloring ink or the leak detection film sensor is treated on the waterproof sheet joint which frequently leaks, it is easy to detect the leak and perform the necessary repairs in a timely manner.

1 is a manufacturing detail of the waterproof integrated PC member in the present invention.

2 to 4 are various embodiments of the waterproof sheet used in the present invention.

5 and 6 are the treatment details of the joint between the waterproof sheet in the present invention.

7 is an example of a waterproof integrated PC pillar completed in accordance with the present invention.

Figure 8 shows the construction details of the PC wall in the present invention.

9 shows the installation state of the set anchor in the present invention.

The present invention relates to a waterproof integrated PC method that can ensure the air shortening effect and work stability in the waterproof structure construction by integrally forming a waterproof layer on the concrete during the PC member manufacturing process, the water-repellent mesh in the middle of the PC member manufacturing process It is a technical feature to use a waterproof sheet, which is placed on the surface and laminated with a nonwoven fabric. Hereinafter, the waterproof integrated PC method of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

( 1) First step

The first step is to prepare a waterproof sheet 100 and the formwork 200 for manufacturing a waterproof integrated PC member. Figure 1 shows the manufacturing of the waterproof integral PC member in the present invention, as shown, if the concrete 300 is poured in a state in which the waterproof sheet 100 is installed in the formwork 200 can be produced as a waterproof integral PC member. The formwork 200 may be prepared as a formwork for manufacturing a conventional PC member, in Figure 1 to check the formwork 200 of the structure by assembling the bottom formwork 210 and the side formwork 220 with a fixing bolt 230. Can be. Waterproof sheet 100 is a water-repellent mesh 120 is placed on the waterproof layer 110 and the non-woven fabric 130 is prepared as a waterproof sheet laminated, Figure 2 to Figure 4 of the waterproof sheet 100 used in the present invention Various examples are shown.

2 shows a basic waterproof sheet 100. In the present invention, the waterproof sheet 100 is placed in the water-repellent mesh 120 of PET (Polyethylene terephthalate) series in the middle of the waterproof layer 110 of the polymer synthetic resin series and the nonwoven fabric 130 is fused and laminated on the surface of the waterproof layer 110 Based on what is produced. By placing the PET water-repellent mesh 120 in the middle of the waterproof layer 110 to reinforce the tensile strength of the waterproof layer of a predetermined thickness so as to cope with deformation of the waterproof layer and to improve the water repellency, and to the surface of the waterproof layer 110, a nonwoven fabric ( It is intended to improve the bonding strength with concrete by reinforcing the tensile strength of the waterproof layer by laminating 130).

In particular, in the waterproof sheet, the waterproof layer 110 is formed to have a thickness of 1.2 to 5 mm by any one of polyethylene (PE), polypropylene (PP), thermo plastic olefin (TPO), and polyvinyl chloride (PVC). It is suitable, PET (Polyethylene terephthalate) water-repellent mesh 120 is suitable by providing a woven water repellent yarn of 840 ~ 1000 denier with a lattice, non-woven fabric 130 is suitable to provide a 100 ~ 300g / ㎡ polyester nonwoven fabric . Such materials and specifications are intended to effectively maintain functionality by the waterproof layer 110, the water repellent mesh 120, and the nonwoven fabric 130. The waterproof sheet 100 is made of a thin waterproof layer base sheet 111 of about 0.6 ~ 4.4mm thickness to form a waterproof layer 110 to the two-ply base sheet 111, between the two-ply base sheet 111 Placing the water-repellent mesh 120 in the heat-sealed lamination, while the non-woven fabric 130 is placed on the surface of the base sheet 111 is manufactured in a way to heat-sealed lamination. This manufacturing process is advantageous to produce a stable waterproof sheet 100 of a constant thickness while effectively removing bubbles. In this manufacturing process, one layer of the two-ply base sheet 111 may use recycled polymer synthetic resin. However, in this case, the base sheet made of recycled polymer synthetic resin is laminated with the nonwoven fabric 130 to secure stable waterproof performance. It is desirable not to be exposed to the outside. Furthermore, by dividing the two-ply base sheet 111 into different colors, it is advantageous in that the damage and the degree of damage due to the scratches of the waterproof layer 110 can be easily grasped, and the joint groove 150 can be uniformly formed. .

3 shows the waterproof sheet to which the stud 140 is further attached. On the surface where the nonwoven fabric 130 is laminated, the stud 140 of the same material as the waterproof layer 110 may be installed to be fused by hot-air welding. Stud 140 serves to improve the bonding force with the concrete by complementing the nonwoven fabric (130).

4 shows a bent type waterproof sheet 100 for use in an inner corner or an outer corner. As shown in Figure 4 (a) to form a joint groove 150 by cutting the grinder in the middle of the waterproof sheet (100). If it is divided into two layers of the base sheet 111, the nonwoven fabric 130 and only one base sheet 111 located below it is to be cut. 4 (b) and 3 (c) are then bent in or out of the joint along the joint groove 150 and then bent when extrusion welding with the same material as the waterproof layer on the joint groove 150. It becomes a waterproof sheet 100 of the form.

(2) Second step

The second step is a step of fixing the waterproof sheet 100 on the formwork 200 surface. The waterproof sheet 100 is installed on the surface of the formwork 200 in which the concrete 300 is poured. The waterproof sheet 100 is installed so that the nonwoven fabric 130 is exposed to the outside while being in close contact with the surface of the formwork 200. In particular, in Figure 1 is prepared longer than the length of the PC member to manufacture the waterproof sheet 100, and put the waterproof sheet 100 on the bottom formwork 210 long and fixed by pressing the side formwork 220 with a fixing bolt 230 Is installed in such a way. If the formwork 200 is installed to be bent for the manufacture of the angled PC member, it may be installed to correspond to the waterproof sheet 100 of the bending type as shown in FIG.

On the other hand, the waterproof sheet 100 is made of a predetermined length and width can be installed in the middle of the formwork 200, in this case to process the joints between the waterproof sheet 100 in the same manner as in Figs. . 5 is an example in which the waterproof sheet 100 is installed or overlapped with each other and the joint is finished by extrusion welding or hot air welding. In FIG. 5 (a), after the waterproof sheets 100 are installed to face each other, the butt joints are finished by extrusion welding. In FIG. 5 (b), the waterproof sheets 100 are overlapped with each other, and then overlapped seams are finished by hot air welding. For this purpose, the waterproof layer 110 is divided into two layers of the base sheets 111 and one layer of An end portion of the basic sheet is provided as the extension blade portion 111a, and is overlapped with the expansion blade portion 111a. In FIG. 5 (c), after the waterproof sheets 100 are installed to face each other, the waterproof strips 410 of the same material as the waterproof layer 110 of the waterproof sheet are finished by hot air welding. Here, but the installation or overlapping installation of each other between the waterproof sheet 100 is carried out in the second step, extrusion welding or hot air welding can be carried out in the fourth step described later as well as the second step.

6 is an example of further processing the leak detection means 420, the water discoloration ink, the leak detection film sensor around the joint between the waterproof sheet 100. After processing the joint as shown in Figure 5, as shown in Figure 6 treated the leak detection means 420 around the joint and the waterproofing while covering the joint of the waterproof sheet 100 over the hydrochromic ink or leak detection means 420 The strip 430 is attached by hot air fusion. At this time, the waterproof strip 430 is prepared of the same material as the waterproof layer 110 of the waterproof sheet, and in particular, when the water discoloration ink is processed by the leak detection means 420, the waterproof strip 430 is prepared. Since the leak detection means (420, water discoloration ink, water leakage detection film sensor) is installed around the joint between the waterproof sheet 100, when the water leakage occurs in the seam, the color of the water discoloration ink changes or leak detection film sensor The reaction is confirmed by a leak. Since the color change of the hydrochromic ink is exposed by the transparent waterproof strip 430, it can be confirmed with the naked eye, and the leak detection by the leak detection film sensor can be confirmed by receiving the response signal of the sensor.

(3) Third step

The third step is to pour by curing the concrete 300. The concrete 300 is poured over the nonwoven fabric 130 of the waterproof sheet, and in the case of the waterproof sheet 100 having the stud 140 further attached thereto, the stud 140 is poured to be embedded (see FIG. 1). As the concrete 300 is poured, the concrete 300 is in close contact with the nonwoven fabric 130, whereby the waterproof sheet 100 and the concrete 300 are integrally coupled to each other. As a result of the actual test, it was confirmed that the non-woven fabric 130 is laminated to the waterproof sheet 100 while securing the adhesion of 3MPa or more.

(4) Fourth step

The fourth step is demolding the formwork 200. This completes the waterproof integral PC member formed of the outer surface of the concrete 300 by the waterproof sheet 100, and FIG. 7 shows the waterproof integral PC column C. After the mold 200 is demolded, the connection parts between the waterproof sheets 100 may be finished by extrusion welding or hot air welding.

(5) The fifth step

The fifth step is to build a waterproof structure with a waterproof integral PC member. As in the normal PC method, the waterproof integral PC members are bonded together. 8 shows various bonding details of the PC wall (W). As shown, after the watertight integral PC members are installed to face each other, the surface of the joints between the watertight integral PC members are finished by extrusion welding or by a watertight strip 410 to finish with hot air welding.

Figure 8 (a) shows the horizontal joint between the PC wall (W), and Figure 8 (b) shows the vertical joint between the PC wall (W), the backing material (B) and the adhesive (fix) ) And the waterproof strip 410 is padded and treated with hot air welding or extrusion welding. Figure 8 (c) shows the junction between the PC wall (W) and the ceiling (CE), it can be seen that the treatment by the hot air welding to the joint treated by extrusion welding and the waterproof strip 410. Figure 8 (d) shows the joint between the PC wall (W) and the floor (F), the bottom of the treated with a ceramic coat (Ceramic Cote) and the adhesive (fix) to the joint to apply a waterproof strip It can confirm that it processed by hot air welding. In particular, the ceramic coat contributes to improved adhesion between the heterogeneous material between the waterproof integral PC wall W and the concrete floor.

Meanwhile, the set anchor 500 may be further installed on the waterproof integrated PC member if necessary. However, the set anchor 500 is installed carefully to ensure watertightness at the installation position. 9 shows the construction details of the set anchor 500 including the anchor bolt 510, flange nut 520, PP waterproof head plate 530. As shown, the set anchor 500, the anchor bolt 510 is provided with a male screw at the rear end; A flange nut 520 to which the male screw of the anchor bolt is fastened; It is configured to include; waterproof head plate 530 of the PP material that the flange of the flange nut is fitted. In this case, the flange nut 520 may be provided as a through structure, and anchor bolts may be installed therethrough. Alternatively, the flange nut 520 may be provided in a closed structure as shown in FIG. 9. The set anchor 500 drills the surface of the waterproof integrated PC member to fix the anchor bolt 510 so that the male screw is protruded, and then anchors the flange nut 520 with the waterproof head plate 530 coupled thereto. It is fastened to the male screw of, and the waterproof head plate 530 is installed by hot air welding on the waterproof layer 110 on the surface of the waterproof integrated PC member. This ensures watertightness while the waterproof head plate 530 is attached around the perforation hole.

The present invention relates to a waterproof integrated PC method, it can be advantageously applied while ensuring the stability of the air shortening and work in the waterproof structure construction.

Claims

Waterproof sheet (100) made so that the PET-based water-repellent mesh 120 is placed in the middle of the waterproof layer 110 by any one of PE, PP, TPO, and PVC, and the nonwoven fabric 130 is laminated on the inner surface of the waterproof layer 110 (100). And a first step of preparing the formwork 200 for producing a PC (Precast Concrete) member;

A second step of fixing the waterproof sheet 100 to the formwork 200 while keeping the waterproof layer 110 of the waterproof sheet close to the formwork surface;

A third step of curing by pouring concrete 300 onto the nonwoven fabric 130 of the waterproof sheet;

A fourth step of removing the formwork 200 and completing the waterproof integrated PC member in which the waterproof sheet 100 is integrally coupled to the concrete 100 surface;

A fifth step of constructing the structure while using the waterproof integrated PC member;

Waterproof integrated PC method comprising a.
In claim 1,

The second step or the fourth step is carried out while connecting the installation of the waterproof sheet 100 with each other butt joints, the butt joint is finished by extrusion welding (extrusion welding) with the same material as the waterproof layer 110 of the waterproof sheet. In addition, the waterproof strip 410 of the same material as the waterproof layer 110 of the waterproof sheet is applied while finishing by hot-air welding (Hot-air Welding), characterized in that the waterproof integrated PC method.
In claim 1,

In the first step, the waterproof layer 110 is divided into two layers of base sheets 111, and a water repellent mesh 120 is placed between the two layers of base sheets 111, and one layer of base sheets is different. It is carried out while preparing with a waterproof sheet 100 made of an extended wing portion 111a protruding from the base sheet 111 of the layer,

Wherein the second step, while installing the connection between the waterproof sheet 100 in the middle of the formwork, it is carried out by installing the overlapping joints by the expansion wing portion (111a),

The second step or the fourth step, waterproof integral PC method, characterized in that carried out while hot air welding the overlapping portion of the extension blade (111a).
The method of claim 2 or 3,

The second step or the fourth step, after the installation is connected to the butt joints or overlapping joints, and treated the water discoloration ink around the joint, and the joint with the transparent waterproof strip 430 of the same material as the waterproof layer of the waterproof sheet Waterproofing integrated PC method characterized in that the process further comprising the step of covering the hydrochromic ink treatment portion at the same time hot air welding.
The method of claim 2 or 3,

The second step or the fourth step, after installing the connection with the butt joints or overlapping joints, the leakage sensing film sensor is processed around the joint, and the joint with the waterproof strip 430 of the same material as the waterproof layer of the waterproof sheet. Waterproof integrally integrated PC method, characterized in that the process further including the process of covering the leakage detection film sensor processing portion at the same time hot air.
The method according to any one of claims 1 to 3,

In the first step, the joint groove 140 is formed by cutting the grinder over the nonwoven fabric 130 in the middle of the waterproof sheet 100 and bending the indenter or out corner along the joint groove 140 and then the joint groove 140. Extrusion welding is carried out with the same material as the waterproof layer of the waterproof sheet and is carried out while preparing the waterproof sheet 100 of bending type.

The second step is a waterproof integrated concrete construction method, characterized in that carried out while installing the bending type waterproof sheet (100) corresponding to the bending formwork (200).
The method according to any one of claims 1 to 3,

The fifth step, the anchor bolt 510 is provided with a male screw at the rear end; A flange nut 520 to which the male screw of the anchor bolt is fastened; A set anchor 500 including a PP head waterproofing head plate 530 to which the flange of the flange nut is fitted is prepared, and a male screw protrudes from the anchor bolt 510 of the set anchor by drilling a waterproof integral PC member surface. After inserting and fixing, the flange head 520 is fastened to the male screw of the anchor bolt while the waterproof head plate 520 is coupled, and the waterproof head plate 530 is hot-welded to the waterproof layer 110 on the surface of the waterproof integral PC member. Waterproof integrated concrete construction method characterized in that it is carried out further including the process.
The method according to any one of claims 1 to 3,

In the fifth step, the waterproof integral PC members are installed to face each other, and the surface of the joint between the waterproof integral PC members is formed by extrusion welding with the same material as the waterproof layer 110 of the waterproof sheet or the waterproof layer 110 of the waterproof sheet. Waterproofing integrated concrete method, characterized in that carried out while further comprising the step of adding a waterproof strip 410 of the same material and finishing with hot air welding.
The method according to any one of claims 1 to 3,

The first step, the waterproof sheet 100, characterized in that the non-woven fabric 130 on the stud 140 of the same material as the waterproof layer 110 of the waterproof sheet while preparing a waterproof grip stud grip waterproof sheet is carried out Integrated PC process.