KR101133026B1 - Three layer waterproofing method using the rubberized asphalt membrane plus rubberized asphalt sheet for the exposure waterproofing structure - Google Patents

Abstract

PURPOSE: A method for laminating three layers of rubberized asphalt coating and waterproof sheets for exposed waterproofing is provided to have excellent waterproofing property with three layered coating and sheet and securely attach exposed waterproof sheets onto rubberized asphalt waterproof sheet to prevent separation. CONSTITUTION: A method for laminating three layers of rubberized asphalt coating and waterproof sheets for exposed waterproofing is as follows. An asphalt waterproof sheet is laminated on the upper part of primary rubberized asphalt mastic. The other asphalt waterproof sheet is laminated on overlapped part of the asphalt waterproof sheet. Secondary rubberized asphalt mastic is coated on the overlapped part of the asphalt waterproof sheet to connect joint parts. The upper part of the asphalt waterproof sheet is partially heated by a torch to remove polyethylene film and the secondary rubberized asphalt mastic is coated. An exposed waterproof sheet is laminated on the asphalt waterproof sheet. The other exposed waterproof sheet is laminated on the overlapped part of the exposed waterproof sheet.

Description

Three layer waterproofing method using the rubberized asphalt membrane plus rubberized asphalt sheet for the exposure waterproofing structure}

The present invention relates to a triple lamination method of a coating film and a waterproof sheet installed for the purpose of waterproofing on exposed surfaces such as a roof of a building, a hangar, and more particularly, in terms of waterproofing and adhesiveness instead of an asphalt primer applied to a base surface. The first layer of liquid rubber asphalt coating waterproofing material, rubber asphalt is coated on both sides of synthetic resin, polyethylene film is adhered to the upper surface, and the polyester waterproofing sheet is formed by adhering a polyester nonwoven fabric or a release member to the lower surface. Laminated on top of the waterproofing material, and by sequentially stacking the exposed asphalt sheet using the layer of granulated granules of ultraviolet light resistant to the upper part of the asphalt waterproof sheet to maximize the composite waterproof effect of the coating film and the sheet and at the same time waterproof by torch heating Adhesion between the sheet and the exposed asphalt sheet It relates to a three-layer lamination method of rubber asphalt coating film and waterproof sheet to increase the exposure to prevent lifting.

In general, the exposed surface of a building such as a rooftop or hangar is the place where the most external factors come in contact with each other, and it is waterproof to protect against precipitation, heat load of solar radiation caused by sunlight, and heat is kept inside. The proper waterproofing method and waterproofing material should be selected in consideration of the ability to insulate, and the ability to handle the loading load acting on the roof surface by snow load and weathering load.

For the renovation of the rooftop waterproofing of the building, after removing the existing waterproof layer protection pressed concrete layer and the waterproof layer, a new waterproof layer (non-exposed waterproof layer) is formed, and the existing waterproof layer demolition method of installing the pressed concrete layer for protecting the waterproof layer again, Press for waterproof layer protection The concrete layer can be classified by covering the new waterproof layer (exposure waterproof layer) without removing it. The advantages and disadvantages of these methods are as follows.

First, the non-exposed waterproof layer of the demolition method protects the waterproof layer against cold and snow by preventing an impact on the waterproof layer, and has excellent weather resistance and durability due to the safety of the waterproof layer against ultraviolet rays and acid rain. On the other hand, the construction cost is high and the construction period is long, the noise and dust are generated during the demolition work of the existing waterproof layer and the pressed concrete layer for protecting the waterproof layer, and the pollution due to the disposal of the remnant waste.

Overlapping exposed waterproof layer has simple advantages such as simple repair period, short repair period, economical cost of maintenance, and insignificant load load on slab due to the formation of new waterproof layer. Receives.

Meanwhile, in order to prevent moisture from penetrating into the exposed area such as a hangar, an impermeable waterproof layer is formed on the surface of the structure. The method of forming such a waterproof layer is various such as cement liquid waterproof, epoxy waterproof, polyurethane waterproof, etc. An exposed coating waterproofing method is used.

The coating film waterproofing method using polyurethane or acrylic rubber as a main material is to form a film by applying multiple layers of liquid coating waterproofing material, which can form a seamless waterproof layer and can easily construct a narrow construction site. When applying the coating waterproofing layer in sequential order, the construction time is long because each layer requires a curing time of about 24 hours or more, and if a crack occurs in the structure, the coating material also breaks and causes leakage.

In order to make up for the above disadvantages, Patent Registration No. 0278173 proposes a double waterproofing material for a coating and sheet of a concrete structure. It is widely used in domestic and overseas construction markets.

However, the above proposed methods are non-exposure waterproofing methods in which a waterproofing layer is placed on the waterproofing layer after the waterproofing construction.In the renovation work on the roof of the building, the existing waterproofing layer and the waterproofing layer are removed and a new non-exposed waterproofing layer is again installed. After forming, press the waterproof layer It is the existing waterproof layer demolition method of pouring concrete.

In addition, in the case of the exposure waterproof construction using the above-described waterproofing material, as shown in FIG. 1, the construction is performed in the order of ground surface treatment-primary asphalt primer application-second asphalt mastic application-exposure waterproof sheet laying order. . In the exposed waterproof construction, the asphalt primer coating process carried out before applying the asphalt mastic for the coating film to the base surface had a problem that the construction time takes much time as the curing time is about 4 to 6 hours after application.

Recently, as a waterproof method performed on a rooftop slab, an exposure type composite waterproof method combining a asphalt sheet waterproof and a polyurethane coating waterproofing disclosed in Patent Registration No. 0590854 has been proposed and used. In the conventional exposure type composite waterproof method, as shown in FIG. 2, the nonwoven fabric layer 20 is formed on the asphalt sheet 10, and the polyurethane coating waterproof layer 30 as an exposed surface is formed on the nonwoven fabric layer 20. By installing the structure 100 to achieve a tight coupling between the asphalt sheet layer 10 and the coating film waterproofing layer 30 is a different material.

In the composite waterproof structure 100, the polyurethane layer is excellent in heat resistance and elasticity resistance, so it has a property that does not shrink or expand even in the cold or freezing weather in the summer for a long time in the summer, suitable for waterproofing the exposed surface Is being used.

The composite waterproof structure 100 of the asphalt sheet and polyurethane combination may cause a separation phenomenon of the waterproof layer due to the lack of adhesion between the concrete base surface and the asphalt sheet layer 10, and thus fail to cope with the behavior of the ground concrete. This may lower the waterproof effect. In particular, since the polyurethane coating waterproof layer and the asphalt waterproof sheet layer are made of heterogeneous materials, the polyurethane layer is separated from the asphalt waterproof sheet layer after a long time, which may lead to a waterproof defect. .

On the other hand, the applicant of the present application has proposed a triple composite waterproof construction method of the concrete structure of Patent No. 0879933 in order to solve the problems of the exposure waterproof method raised above. The patent is a method that can finish the construction without a separate finishing process by laying the exposed asphalt waterproof sheet on the rubber asphalt mastic. However, since the above method shows waterproofness only with a rubber asphalt mastic and an exposed waterproof sheet, the waterproofness may be degraded in a place exposed to the outside environment such as a hangar and exposed to a lot of sunlight, thereby providing a more stable waterproof method. I'm looking for a situation. In particular, in order to exhibit excellent waterproofing properties in a harsh environment, although a method of stacking a plurality of waterproofing layers is an alternative, workability is complicated, and there is a problem of lifting between asphalt waterproof sheet and exposed waterproof sheet.

Therefore, the present invention has been proposed to solve the above problems, and by partially heating the top film of the rubber asphalt waterproof sheet laminated on the rubber asphalt mastic functioning as a coating material to remove the torch, and exposed waterproof on it The sheet is laminated, but the rubber waterproof mastic is applied to the torch heating part of the rubber asphalt waterproof sheet to realize excellent waterproofness, while the exposed waterproof sheet is firmly attached to the rubber asphalt waterproof sheet to prevent lifting. Its purpose is to provide a triple lamination method of rubber asphalt coating film and waterproof sheet.

In order to achieve the above object, the present invention, by mixing the material of one of the synthetic polymer resin adhesive, natural mineral fiber, petroleum resin and isobutylene or poly isobutylene-based synthetic resin to the main material Quick Drying Asphalt Compound A first step of applying a primary rubber asphalt mastic prepared in a gel state to the surface of the mother to be constructed; Rubber asphalt mixture is applied to both sides of the synthetic resin, the polyethylene film is bonded to the upper surface except the overlap portion of the end surface, and the asphalt waterproof sheet manufactured by bonding any one of the polyester nonwoven fabric or the release member to the lower surface of the primary rubber A second step of laying on the asphalt mastic; In the second step, another asphalt waterproof sheet is superimposed on the overlapping portion of the asphalt waterproof sheet, and the overlapping portion is coated with a secondary rubber asphalt mastic made of the same as the primary rubber asphalt mastic to connect the joint portions. Three steps; A fourth step of removing the polyethylene film by partially heating the upper surface of the asphalt waterproof sheet with a torch in the third step, and applying the secondary rubber asphalt mastic to the site; Rubber asphalt mixture is applied to both sides of the synthetic resin, a release member is attached to the lower surface, and the exposed surface is manufactured by applying a layer of colored granules coated with an ultraviolet ray material (Ultraviolet material) to the upper exposed surface except the overlap portion of the end. A fifth step of laminating a waterproof sheet on the asphalt waterproof sheet; And overlapping the other exposed waterproof sheet on the overlapped portion of the exposed waterproof sheet in the fifth step, applying a secondary asphalt mastic to the overlapped portion, connecting the joint portions, and partially heating the release member of the exposed waterproof sheet with a torch. It provides a three-layer lamination method of the rubber asphalt coating film and waterproof sheet for waterproofing including the sixth step of attaching and finishing the exposed waterproof sheet to the secondary rubber asphalt mastic partially applied on the asphalt waterproof sheet after removal. .

In an embodiment of the present invention, the fourth step is to remove the polyethylene film by heating the middle portion of the asphalt waterproof sheet at intervals and to apply a rubber asphalt mastic thereon, the sixth step is The intermediate part of the exposed waterproof sheet is heated with a torch to remove the polyethylene film as a release member, and is laid on the secondary rubber asphalt mastic applied on the asphalt waterproof sheet.

As described above, according to the present invention, the following effects are realized.

First, it is excellent in watertightness by forming triple waterproofing layer by using rubber asphalt mastic, rubber asphalt mastic, rubber asphalt waterproof sheet and exposed granular layer of granulated granules with exposed surface. It is able to secure safety and reliability of waterproofing, and it is excellent in response to ground behavior, chemical resistance, durability and weather resistance.

Second, as the construction of the room temperature method, it is possible to install the vertical wall surface, there is no risk of handling and transporting the material, and the workability is good and separate by the room temperature application of the rubber asphalt coating waterproofing material and the continuous work of the asphalt waterproof sheet and the exposure waterproof sheet. The finishing process can be omitted.

Third, due to the strong adhesion of the rubber asphalt mastic, it can be bonded between the concrete base surface and the asphalt waterproof sheet without lifting or peeling phenomenon, and the exposed waterproof sheet laminated on the asphalt waterproof sheet is formed through the rubber asphalt mastic. By being firmly attached to the asphalt waterproof sheet, it is possible to form a reliable coating and sheet waterproof layer.

1 is a schematic cross-sectional view showing a first exemplary configuration of an exposure waterproofing material according to the prior art;
Figure 2 is a schematic cross-sectional view showing a second exemplary configuration of the exposed waterproofing material according to the prior art,
Figure 3 is a cross-sectional view showing an embodiment configuration of the triple lamination method of rubber asphalt coating film and waterproof sheet for waterproofing according to the present invention,
Figure 4 is a perspective view showing the construction state of the triple lamination method of the rubber asphalt coating film and waterproof sheet for waterproofing according to the present invention,
5 is a block diagram of an asphalt waterproof sheet which is a main part of the present invention;
Figure 6 is a block diagram of an exposed waterproof sheet which is the main part of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 to 6.

The coating and sheet triple lamination method for exposure waterproofing according to the present invention has a strong adhesion, elasticity, and elasticity to the concrete base surface, the coating waterproof layer having resistance to concrete cracks, and the asphalt waterproof sheet and the sunscreen impregnated in the coating waterproof layer. By stacking the exposed waterproof sheet with the coated granulated granule particle layer coated layer sequentially, it shows excellent waterproof effect with triple waterproofing of the coating film and the sheet, and can be easily constructed.

Figure 3 is a cross-sectional view showing an embodiment configuration of a triple lamination method of the rubber asphalt coating film and waterproof sheet for exposure waterproofing according to the present invention, Figure 4 is a rubber asphalt coating and waterproof sheet for exposure waterproofing according to the present invention 5 is a perspective view showing the construction state of the triple lamination method, Figure 5 is a block diagram of the asphalt waterproof sheet which is the main part of the present invention, Figure 6 is a block diagram of an exposed waterproof sheet which is the main part of the present invention.

As shown in the drawings, the present invention is prepared by mixing a material of one of synthetic polymer resin adhesive, natural mineral fiber, petroleum resin and isobutylene or poly isobutylene-based synthetic resin to the main material Quick Drying Asphalt Compound A rubber asphalt mastic layer applied to the concrete base surface; SBS rubber asphalt compound is uniformly applied to a predetermined thickness on both sides of a synthetic resin (PP woven fabric or polyester fiber nonwoven fabric) as a reinforcement material, a polyethylene film is coated on the upper surface, and a polyester nonwoven fabric is bonded to the lower surface, An asphalt waterproof sheet layer laminated on the primary rubber asphalt mastic; Applying SBS modified asphalt compound on top of PP woven fabric or polyester fiber nonwoven fabric, applying colored granule particle layer coated with ultraviolet material on the upper exposed surface, and coating polyethylene film on the lower surface An exposed waterproof sheet layer manufactured and laminated on the asphalt waterproof sheet; The upper surface of the asphalt waterproof sheet layer is heated on a torch at predetermined intervals and is applied to a region where the polyethylene film is removed, and includes a second rubber asphalt mastic for firmly bonding the exposed waterproof sheet and the asphalt waterproof sheet.

Here, the primary rubber asphalt mastic is a well-known coating film waterproofing material described in Patent No. 10-0744727, filed by the applicant of the present application, and the polymer resin adhesive 15 to 40 to 57wt% of Quick Drying Asphalt Compound. It is manufactured by mixing 25 wt% to 12 to 16 wt% of natural mineral fiber, 5 to 10 wt% of petroleum resin, and 3 to 10 wt% of one of isobutylene or poly isobutylene synthetic resins.

The polyester nonwoven fabric attached to the lower portion of the asphalt waterproof sheet is impregnated with the primary rubber asphalt mastic so that the primary rubber asphalt mastic and the asphalt waterproof sheet are integrated to maintain a firm adhesive force.

As another embodiment of the present invention, a release member may be attached instead of the polyester nonwoven fabric attached to the lower surface of the asphalt waterproof sheet. The release member may be made of a polyethylene film or a release film or release paper of another material.

In addition, in order to indicate the overlapping portion of the joint joint of the asphalt waterproof sheet on one side of the upper surface of the asphalt waterproof sheet, an overlap (overlap) line is formed on a portion raised by 10 cm width from one side, the overlap portion is polyethylene The film has been removed. Therefore, the rubber asphalt coating waterproofing material is applied to the overlapped portion between the asphalt waterproof sheet to a thickness of 1 ~ 2mm to firmly bond the overlapping portion between the upper waterproof sheet and the lower waterproof sheet. Alternatively, the rubber asphalt compound may be coated on the overlapped portion of the asphalt waterproof sheet to a thickness of 0.2 mm to 0.4 mm, and then a release film may be attached. Therefore, in the case where the asphalt waterproof sheet is to be overlapped in the width direction, the release film is peeled off, and the overlapping portion is completed by pressing the overlapped portion between the asphalt felt sheets.

The release film coated on the lower portion of the exposed waterproof sheet is to prevent the adhesive surface and its corresponding surface from being bonded to each other when the exposed waterproof sheet is wound in a roll, and is not a self-adhesive sheet. When the exposed waterproof sheet is laid on the asphalt waterproof sheet layer, the release film is heated and removed with a torch and then attached to the asphalt waterproof sheet.

In the embodiment of the present invention, the release film constituting the exposed waterproof sheet is made of a polyethylene film. However, the present invention is not limited thereto, and when the exposed waterproof sheet is made of a self-supporting sheet, the release member may be made of a self-supporting release film or a release paper.

Further, the colored granule particle layer is removed from the upper end surface of the exposed waterproof sheet by a predetermined width (the width corresponding to the overlapping area). Thus, like the asphalt waterproof sheet, the rubber asphalt mastic is applied to the overlapped portions as in the asphalt waterproof sheet, thereby adhering the overlapped portions of the exposed waterproof sheets.

Referring to the construction method of the present invention configured as described above are as follows.

First, make the surface of the concrete matrix to be waterproofed clean and flat. At this time, it is preferable to treat the wires or nails so as not to protrude, and the uneven parts are flattened with iron trowels or after the pus mortar is applied, the soil, dust, sand, etc. are cleaned cleanly. In addition, after coating and reinforcing the film waterproofing material with a thickness of 2 ~ 3mm on the fragile areas where water-proof defects such as concrete pouring joints, drain parts, floor and wall edges, corner parts, and pipe joints are likely to occur, the asphalt primer Apply.

In addition, a primary rubber asphalt sheet manufactured in a gel state by mixing a material of one of synthetic polymer adhesive, natural mineral fiber, petroleum resin, and isobutylene or polyisobutylene-based synthetic resin with a quick dry asphalt compound (Quick Drying Asphalt Compound) A stick (for coating) is applied over the asphalt primer.

Next, SBS rubber asphalt compound is uniformly applied to a predetermined thickness on both sides of the synthetic resin (PP woven fabric or polyester fiber nonwoven fabric) as a reinforcing material, a polyethylene film is coated on the upper surface, and a polyester nonwoven fabric is attached to the lower surface. Is laminated on top of the primary rubber asphalt mastic.

Here, there is no polyethylene film in the overlap portion of the asphalt waterproof sheet, the overlap of the end of the other asphalt waterproof sheet by a predetermined width is laid on the overlap portion, the overlapping joint is treated as follows.

First, apply a secondary rubber asphalt mastic (reinforcement) made of the same as the primary rubber asphalt mastic on the overlapping portion of the upper surface of the asphalt waterproof sheet end, then overlap the other asphalt waterproof sheet end and press with a roller or the like Complete bonding of the seam.

Next, the upper part of the asphalt waterproof sheet is partially heated by a torch to remove the polyethylene film, and the secondary rubber asphalt mastic is applied to the area where the polyethylene is removed. Finally, SBS modified asphalt compound is applied on the basis of PP or polyester fiber nonwoven fabric as a base material, a layer of colored granules coated with an ultraviolet ray material (Ultraviolet material) is coated on the upper exposed surface, and a polyethylene film is applied on the lower surface. The exposed waterproof sheet prepared by coating is laminated on the asphalt waterproof sheet. During the laminating operation, the release film of the exposed waterproof sheet is partially heated and removed with a torch, and then the exposed waterproof sheet is attached to a secondary rubber asphalt mastic (reinforcement) partially coated on the asphalt waterproof sheet.

When the exposed waterproof sheet is laminated on the asphalt waterproof sheet and finished, the overlapping part of the exposed waterproof sheet, that is, the end overlap part of the exposed waterproof sheet does not have a colored granule particle layer, so the secondary rubber asphalt is disposed on the overlapped part of the upper and lower layer exposed waterproof sheets. Apply the mastic to connect the joints.

In the embodiment of the present invention, since the primary rubber asphalt mastic (for coating) is applied to the bottom surface in a liquid or gel form and firmly adhered, the application process of the asphalt primer may be omitted.

Removing the polyethylene film of the asphalt waterproof sheet may partially heat the middle portion of the asphalt waterproof sheet with a torch to remove the polyethylene film and apply a secondary rubber asphalt mastic thereon. In addition, the step of laminating the exposed waterproof sheet on the asphalt waterproof sheet is to heat the upper center of the lower surface of the exposed waterproof sheet with a torch, and then to match the joint portion of the asphalt waterproof sheet by waterproofing the asphalt through the secondary rubber asphalt mastic The exposed waterproof sheet laminated on the sheet is firmly attached.

In the exposed waterproof construction process, the primary rubber asphalt mastic is used for coating for strong adhesion to the concrete base surface, and the secondary rubber is applied between the asphalt waterproof sheet and the asphalt waterproof sheet and the exposed waterproof sheet. Asphalt mastic is used for reinforcement and curable asphalt mastic which is completely cured after 4 to 5 hours.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be apparent to those who have knowledge.

Claims (5)

Primary rubber asphalt sheet manufactured in gel state by mixing the main raw material of Quick Drying Asphalt Compound with one of synthetic polymer resin adhesive, natural mineral fiber, petroleum resin and isobutylene or poly isobutylene synthetic resin A first step of applying the stick to the mother surface to be constructed;
Rubber asphalt mixture is applied to both sides of the synthetic resin, the polyethylene film is bonded to the upper surface except the overlap portion of the end surface, and the asphalt waterproof sheet manufactured by bonding any one of the polyester nonwoven fabric or the release member to the lower surface of the primary rubber A second step of laying on the asphalt mastic;
In the second step, another asphalt waterproof sheet is superimposed on the overlapping portion of the asphalt waterproof sheet, and the overlapping portion is coated with a secondary rubber asphalt mastic made of the same as the primary rubber asphalt mastic to connect the joint portions. Three steps;
A fourth step of removing the polyethylene film by partially heating the upper surface of the asphalt waterproof sheet with a torch in the third step, and applying the secondary rubber asphalt mastic to the site;
Rubber asphalt mixture is applied to both sides of the synthetic resin, a release member is attached to the lower surface, and the exposed surface is manufactured by applying a layer of colored granules coated with an ultraviolet ray material (Ultraviolet material) to the upper exposed surface except the overlap portion of the end. A fifth step of laminating a waterproof sheet on the asphalt waterproof sheet; And
In the fifth step, the other exposed waterproof sheet is superimposed on the overlapped portion of the exposed waterproof sheet, and the second asphalt mastic is applied to the overlapped portion to connect the joint portions, and the release member of the exposed waterproof sheet is partially heated by a torch and removed. The sixth step of attaching and closing the exposed waterproof sheet to the second rubber asphalt mastic partially coated on the asphalt waterproof sheet
Triple lamination method of rubber asphalt coating film and waterproof sheet for waterproofing including a.
The method of claim 1,
The fourth step is characterized in that to remove the polyethylene film by heating the middle portion of the asphalt waterproof sheet with a torch at intervals, and to apply a rubber asphalt mastic thereon,
The sixth step is to remove the release film by heating the intermediate portion of the exposed waterproof sheet torch, rubber asphalt coating film for waterproofing the exposure, characterized in that it is laid in accordance with the secondary rubber asphalt mastic applied on the asphalt waterproof sheet and Triple lamination method of waterproof sheet.
The method according to claim 1 or 2,
The primary and secondary rubber asphalt mastic is
Quick Drying Asphalt Compound 40 ~ 57wt%, Synthetic Polymer Resin Adhesive 15 ~ 25wt%, Natural Mineral Fiber 12 ~ 16wt%, Petroleum Resin 5 ~ 10wt% and Isobutylene or Polyisobutylene Synthetic Resin Triple lamination method of rubber asphalt coating film and waterproof sheet for waterproofing, characterized in that the material is prepared by mixing 3 ~ 10wt%.
The method according to claim 1 or 2,
A triple lamination method of rubber asphalt coating film and waterproof sheet for waterproofing further comprising the step of applying a primer before applying the primary rubber asphalt mastic on the surface of the first step.
The method according to claim 1 or 2,
The release member constituting the asphalt waterproof sheet in the second step is made of one selected from polyethylene film, release film and release paper,
3. The triple lamination method of the rubber asphalt coating film and the waterproof sheet for waterproofing according to claim 5, wherein the release member constituting the exposed waterproofing sheet is one selected from a polyethylene film, a release film, and a release paper.

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