KR200195343Y1 - Waterproof sheet for concrete structure - Google Patents

Abstract

The present invention is made by stacking a polyethylene coating agent and a polyethylene film on the upper surface with a polyethylene woven fabric as a center, and laminating a polyethylene coating agent and a polyester long-fiber nonwoven fabric on the lower surface, thereby primarily applying asphalt sheets to the concrete base surface. It relates to a waterproof sheet of a concrete structure that can be easily impregnated in the stick coating waterproof layer, and is completely bonded to the coating film waterproofing layer to form an integrated coating film and sheet dual structure. ASPHALT MASTIC is a rubber manufactured in a gel state by using asphalt compound as a main raw material, and adding one of synthetic rubber adhesives, isobutylene and polyisobutylene-based resins, natural minerals and cellulose inorganic filaments. Asphalt asphalt film waterproofing material, the asphalt mastic Polyethylene coating and polyethylene film are sequentially laminated on the upper surface with polyethylene woven fabric as the main substrate on the waterproof layer, and the waterproof sheet of the concrete structure formed by sequentially laminating the polyethylene coating agent and polyester long fiber nonwoven fabric on the lower surface is secondary. As a zoom, it prevents the penetration of water and moisture and is not easily torn or broken because it is not affected by alkali or acidic materials.

The present invention as described above is a material for waterproofing underground concrete structures such as rooftops, underground parking garages and underground exterior walls of buildings, subways, underground roadways, and public spheres, and has excellent elasticity and elasticity, and forms bitumen-based asphalt that forms a flexible waterproof layer. By effectively combining on the mastic coating waterproof layer, it is possible to maximize the effect of the double waterproofing of the coating film and sheet, and the cost is low.

Description

Waterproof sheet for concrete structure

The present invention relates to a waterproof sheet laminated on the base surface of a concrete structure for waterproofing the roof of a building, an upper part of a parking lot, an underground exterior wall (cooperative ward), etc., and a bitumen-based rubber that primarily forms a waterproof coating layer on a concrete base surface. After applying the asphalt mastic, the waterproof sheet is applied, but the asphalt mastic coating waterproofing material with excellent adhesion is impregnated with the polyester nonwoven fabric bonded to the lower surface of the waterproof sheet to form an integrated coating film and sheet double waterproof layer which makes perfect adhesion with the waterproof sheet layer. The present invention relates to a waterproof sheet of a concrete structure that can cope with the fine behavior of the concrete structure and maximizes the double waterproof effect of the coating film and the sheet.

In general, the waterproofing method applied to the waterproofing of the roof of a building structure, the upper part of the parking lot, the basement outer wall, the joint hole, etc. is mainly composed of solid brown asphalt, asphalt felt, asphalt roofing, etc. The asphalt eight-layer waterproofing method of carrying out laminated construction using the made waterproofing material was disclosed and used.

However, this asphalt 8-layer waterproofing method is a layered construction, so that the coating layer of the waterproofing layer is relatively thick, thereby providing excellent waterproofing effect, excellent durability and watertightness, and high reliability in waterproofing, while heating and melting solid asphalt at high temperature. At the same time, the process is complicated by layer construction, special construction technology is required, labor costs are high, the risk of work due to high temperature heating work is high, and environmental pollution caused by smoke and smell is serious. In addition, the construction method is impossible to install the vertical surface in the basement waterproof, it is easy to lift the joint and the adhesive portion, it is susceptible to the change of temperature, it is easy to crack the waterproof layer at low temperature. In addition, it is not only difficult to find defects at the time of defects, but also has a disadvantage of having a long repair period due to the wide range of repairs and high repair costs.

In order to solve the disadvantages of the conventional asphalt 8-layer waterproofing method, conventionally, as shown in Fig. 1, a high-adhesive rubberized asphalt compound on both sides based on synthetic resin such as polyester nonwoven fabric or polypropylene (PP) woven fabric After coating with an equal thickness, the asphalt sheet is waterproofed using a roll-type waterproof sheet made of self-adhesive power by attaching a thin thread or polyethylene film on the upper surface and attaching a release paper (silicon coated paper) on the lower surface. Is being applied to.

In the asphalt sheet waterproofing method, domestic installation is preferred by the self-adhesive force of the waterproof sheet, but in advanced countries, heat fusion construction of a torch having high waterproof reliability is the mainstream.

In the case of the construction by the self-adhesive force of the waterproof sheet, after applying the asphalt primer after the base surface treatment of the concrete structure, peel off the peeling paper on one side of the sheet and using the self-adhesive strength of the sheet to attach to the base surface of the mother layer after attaching the waterproof layer Although it is made of the construction of casting, in the case of such a construction method there is a problem that the lifting phenomenon or peeling phenomenon with the concrete base surface due to the lack of adhesive strength at low temperature due to the disadvantage of the weak cold-resistant sheet.

In the case of heat fusion bonding to the torch, the adhesion effect with the base surface can be enhanced. However, even when heat fusion to the attraction force, it may not be equally thermal fusion, and similarly, lifting or peeling phenomenon occurs from the concrete base surface at low temperature. There are still problems that are likely to occur.

In addition, when heat fusion bonding with a torch about 10cm in width of the joint, it is difficult to secure the watertightness of the joint without uniform heat fusion, and leakage accidents frequently occur due to breakage at low temperatures. There is a problem.

The problem that is commonly applied in the construction method performed by using a waterproof sheet manufactured to have a self-adhesive force used as a concrete waterproof material or a waterproof sheet bonded by heat fusion as described above is that after pressing a protective mortar as a waterproof protective layer Since it is necessary to perform concrete pouring, it is inexpensive, and requires a certain working space for external work, and also has a problem in that the liquid waterproofing construction must be performed in parallel when waterproofing the retaining wall.

Therefore, the present invention was devised to solve the above problems, by laminating a polyethylene coating agent and a polyethylene film on the upper surface with a polyethylene woven fabric as a center substrate, by molding a polyethylene coating agent and a polyester nonwoven fabric on the lower surface To provide a waterproof sheet of concrete structure that can be easily impregnated into the asphalt mastic film waterproof layer applied to the concrete base surface, and can be completely bonded with the film waterproof layer to form an integrated coating film and sheet dual structure. have.

In addition, the present invention is a material for waterproofing civil structures such as roof top, underground parking lot or underground outer wall of building and subway, underground road, common ward, etc., and has excellent elasticity and elasticity, and it is effective for flexible bitumen-based asphalt mastic coating waterproof layer. Another purpose is to provide a waterproof sheet of a concrete structure to maximize the double waterproof effect of the coating and sheet by combining.

In addition, the present invention not only prevents the penetration of water and moisture, but also is not affected by alkali or acidic substances, and thus is not easily torn or broken. Another object of the present invention is to provide a waterproof sheet of a thin and inexpensive concrete structure. have.

1 is a block diagram of an improved asphalt waterproof sheet according to the prior art.

Figure 2 is a perspective view showing an embodiment of the waterproof sheet of the concrete structure according to the present invention.

Figure 3 is a perspective view showing another embodiment of the waterproof sheet of the concrete structure according to the present invention.

Figure 4 is a schematic view showing a double waterproof method of the concrete structure according to the present invention.

5 is an exemplary view when the double waterproof method of the present invention is applied to a vertical wall portion of a building.

Figure 6 is an exemplary view when the double waterproof method of the present invention is applied to the parapet part of the building.

Figures 7a and 7b is an exemplary view when the double waterproof method of the present invention is applied to the expansion joint portion of the building.

Figure 8 is an illustration of the case of applying the double waterproof method of the present invention to the roof drainage portion of the building.

Figure 9 is an exemplary view when the double waterproof method of the present invention is applied to the upper part of the parking lot of the building.

10 is an exemplary view when the double waterproof method of the present invention is applied to the outer wall part of the basement of a building.

Figure 11 is an exemplary view when the double waterproof method of the present invention is applied to the joint sphere of the building.

Figure 12 is an exemplary view when the double waterproof method of the present invention is applied to the underground roadway portion.

In order to achieve the above object, the present invention has a polyethylene woven fabric as a center substrate, but the polyethylene coating and the polyethylene film are sequentially laminated on the upper surface, and the polyethylene coating and the polyester nonwoven are sequentially laminated on the lower surface, thereby waterproofing the concrete structure. Provide a sheet.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIG. 2.

The waterproof sheet of the concrete structure according to the present invention is an impervious waterproof sheet which is laid secondly after the asphalt mastic coating waterproofing material is applied to the concrete base surface, and the polyester filament (or short) is attached to the lower surface of the waterproof sheet. Fiber) Non-woven fabric (hereinafter referred to as 'polyester nonwoven fabric') is impregnated with asphalt mastic, which is a coating waterproofing material, and the asphalt mastic waterproofing layer and the sheet waterproofing layer are completely bonded to each other so that they are integrated with each other. And the effect of the double waterproof sheet.

As shown in FIG. 2, the waterproof sheet in the present embodiment is formed by adhering a polyethylene coating agent and a polyethylene film to the upper surface of the polyethylene woven fabric functioning as a center substrate and laminating the polyethylene coating agent and the polyester nonwoven fabric on the lower surface thereof. It is structured. Here, the polyester non-woven fabric is made of a weight product of 30g / ㎡-100g / ㎡ in order to be easily impregnated in the asphalt mastic, which is a coating waterproofing material, excellent durability and large tensile force. In addition, the coating thickness of the polyethylene coating agent is 0.02mm-0.05mm, the polyethylene film thickness is made of 0.02mm-0.06mm. In the present embodiment, a structure using a polyethylene woven fabric is proposed as the central substrate, but a polypropylene woven fabric may be used without being limited thereto.

The waterproof sheet configured as described above is usually manufactured in the form of a roll having a width of 1.28M x a length of 150M x a thickness of 0.3MM-0.4MM so as to easily spread on the asphalt mastic coating waterproofing material.

Looking at the construction of the waterproof sheet configured as described above, first, after the base surface treatment of the concrete surface, the asphalt primer is applied, and the bitumen-based asphalt mastic coating waterproofing material is applied to the upper surface and then laid the waterproof sheet and pressed concrete It consists of simple construction to finish construction.

On the other hand, as a construction method for implementing the coating and sheet double waterproofing effect using the waterproof sheet configured as described above will be described in detail later with reference to Figure 4, first, the bitumen-based rubber asphalt mastic of the asphalt state using the asphalt compound as a main raw material Is applied to the mother surface to form a primary coating film waterproofing layer.

In this case, the asphalt mastic is perfectly adhered to the surface of the concrete matrix by the strong adhesive force, thereby providing excellent elasticity and flexibility, and forming a coating waterproof layer in a gel state that is not completely cured in a sealed state. The waterproof sheet of the present invention is laid on the first waterproofing layer by the asphalt mastic, and after pouring the pressed concrete, the construction is finished, thereby enabling double waterproofing of the coating and sheet.

Since the polyester nonwoven fabric attached to the lower surface of the waterproof sheet is impregnated into the asphalt mastic during the construction process, the nonwoven fabric itself serves as a waterproof sheet, and is fully adhered to the asphalt mastic coating waterproof layer to maximize the waterproofing effect of the sheet waterproof layer. You can. In addition, it is possible to prevent the rolling phenomenon of the sheet even during pressing concrete pouring work, and to prevent the fluidity of the asphalt mastic coating waterproofing material in a gel state.

Meanwhile, another embodiment of the present invention is shown in FIG. In the present embodiment, as shown in the figure, a high-adhesive rubber asphalt compound is bonded to the upper surface of one of the polyester-based nonwoven fabric or polypropylene woven fabric to a predetermined thickness, and then the polyethylene film or fine yarn is bonded. It is a structure in which a high-adhesive rubber asphalt compound is adhered to a certain thickness on the lower surface of the center base, and then a polyester nonwoven fabric is bonded to it.

The waterproof sheet having the above structure is combined with the above-mentioned asphalt mastic coating waterproofing material to perform a double waterproofing of the coating film and the sheet of the concrete structure.

Asphalt coating waterproofing material combined with the waterproof sheet according to an embodiment of the present invention is composed of asphalt compounds such as cutback asphalt (CUTBACK ASPHALT and Brown ASPHALT) as the main raw material, synthetic rubber adhesive and isobutylene excellent in strong elasticity and adhesion It is composed of ASPHALT MASTIC of rubberized asphalt bitumen-based mixed with synthetic resin and special inorganic fillers.

Here, the asphalt bitumen coating material is characterized in that it can be used as an asphalt mastic coating waterproofing material with the use of the adhesive between the waterproof sheet and the concrete surface.

It will be described in more detail the coating film waterproofing material of asphalt bitumen system applied to the waterproof sheet of the present invention.

First, the asphalt mastic coating waterproofing material contains the following components.

1) Asphalt compound (cutback asphalt, brown asphalt compound)

2) Synthetic rubber adhesives

3) Asbestos fibers (Modified cellulose fibers)

4) Isobutylene and Polyisobutylene Synthetic Resin

5) Zinc Stearate (Zinc-Stearate)

6) Thinner

7) Other additives (dispersant, antioxidant, plasticizer, etc.)

In addition, the main raw material composition ratio of the asphalt bitumen coating film waterproofing material is as follows.

Raw material composition ratio <content unit: weight%>

division Composition Remarks Asphalt compound 60% -80% Synthetic Rubber Adhesive Solution 7% -15% Natural mineral fiber 10% -15% Isobutylene and Polyisobutylene Synthetic Resin 5% -10% Zinc stearate 0.4% -1% Dispersants and stabilizers 0.3% -0.5%

Note) The asphalt compound has an asphalt solid content of 70% or more petroleum solvent (solvent) 30% or less.

Physical properties of the bituminous coating waterproofing material, that is, asphalt mastic (ASPHALT MASTIC) are shown in Table 1.

Classification Test Items unit Test Methods Test Specification Test result Continuity 60 ℃ ± 1 ℃ ASTM D2822-91 There should be no flow or bubble. clear Flexibility 0 ℃ ± 1 ℃ ASTM D2822-91 There should be no crack or peeling phenomenon. clear Ash (720 ℃) % ASTM D2822-91 15-45 16.9 Non-volatile materials % ASTM D2822-91 70 MIN 87 Absorption amount % 1% MAX 0.05

Asphalt mastic, the bituminous waterproofing material, is prepared as follows.

Asphalt compounds such as cutback asphalt or brown asphalt, synthetic rubber adhesive solution in liquid state, and isobutylene-based synthetic resin are first mixed and then stirred for 30 to 60 minutes to be completely mixed.

After the raw material blending process, zinc stearate in powder form and mineral fiber powder are gradually added to the mixture, followed by stirring for 30 to 60 minutes to keep the viscosity and mixing state on the mixing vessel upper and lower portions to prepare a mastic.

Referring to the construction method using the asphalt bitumen-based waterproof film and the waterproof sheet configured as described above with an example of the waterproof surface construction shown in Figure 4 as follows.

First, make the concrete base surface 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 and the like are cleanly cleaned. In addition, the asphalt mastic coating waterproofing material is first applied to a thickness of 2 to 3 mm to reinforce the fragile parts such as concrete pouring joints, drains, corners of floors and walls, corners, and pipe connections. After that, an asphalt primer is applied (0.4 L / m 2), and a gel-like asphalt mastic which is a primary coating waterproofing material is applied to a thickness of about 2 mm.

Here, the primer coating process may be omitted because the asphalt mastic, which is the primary coating waterproofing material, is applied to the bottom surface in a gel state to be firmly attached.

Asphalt mastic coating forming the first waterproofing layer is evenly applied with a thickness of about 2 mm from a low place to a high place using a toothed trowel as wide as the width of the waterproof sheet.

Then, the waterproof sheet of the present invention rolled in a roll shape on the first coating film waterproofing material, and gently pressed with a roller.

Next, connect the joints (seam) between the waterproof sheets first by applying a secondary asphalt mastic 1 to 2 mm thick at about 10 cm in width on the end of the waterproof sheet, and then overlaid the waterproof sheet on the rollers. Press lightly to bond the lower and upper sheets.

After performing the process, water or moisture is applied to the seam by reinforcing and applying a third asphalt mastic 1 to 2 mm thick to the left and right width of the joint at the seam where the waterproof sheet overlaps. Prevent it from penetrating.

As described above, when the coating and waterproofing sheet laying construction is completed, the pressed concrete is poured to finish the construction.

Here, the secondary and tertiary asphalt mastic for reinforcing the seam use a curable asphalt mastic that is cured after 4 to 5 hours.

The construction method of the waterproof sheet of the present invention combined with asphalt mastic coating waterproofing is as shown in the following embodiment of the roof of the construction concrete structure, the upper slab of the underground parking lot, the basement outer wall and underground, underground, underground, underground civil engineering, etc. Etc., it can be applied to the external waterproof of all structures that require waterproofing, and is not limited to the following embodiments according to the attached Figures 5 to 12.

Example

In the case of vertical wall waterproofing construction

As shown in Figure 5, the same as the case of the above-described waterproof floor construction. In particular, the corners of the floor and the wall attach the non-floor waterproof sheet about 10 cm to the vertical wall surface, and the waterproof sheet coming down from the vertical wall attach about 10 cm to the floor surface so that they overlap in two layers. Then, at the bottom of the vertical wall surface, make a triangular groove having a width of 2 cm x 2 cm at a height of at least 30 cm or more, fold the sheet into the groove, and then fill the film waterproofing material with caulking at both ends. Paint thickly.

In the case of parapet waterproofing

As shown in Figure 6, in this case also the same as the floor waterproofing construction, in particular, while filling the protective brick on the parapet portion (0.5B), filling the cement mortar in the gap between the masonry portion and the coating waterproofing material do.

For expansion joints, roof drainage and waterproofing above the parking lot

The expansion joint (EXPANSION JOINT) is shown in Figures 7a and 7b, the periphery of the roof drain is shown in Figure 8, the upper part of the parking lot is shown in Figure 9, the floor Construct it in the same way with reference to the waterproof construction method.

Filling the mortar at the bottom of the lower end of the drain in the construction of the periphery of the roof drain, and put the cured asphalt mastic used for filling on the bottom of the bottom.

Underground wall waterproofing

As shown in FIG. 10, a protective brick is stacked on the waterproof layer (0.5B) or the foamed polyethylene foam having a thickness of 20MM-30MM is adhered to the soil and then backfilled with less gravel.

In case of joint construction or underground road part waterproofing

As shown in Figures 11 and 12, the same construction with reference to the bottom surface waterproof construction.

As shown in the above example, when the waterproof sheet of the present invention is combined with a coating waterproofing material, the waterproofing sheet and the sheet exhibit the effect of double waterproofing, and can be easily installed even in a difficult site, and in the case of the bottom layer, the waterproof layer protective mortar Since it can be pressed concrete pouring directly without the need for construction, it can reduce the construction cost and shorten the construction period.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope not departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, according to the present invention, as well as preventing the penetration of water and moisture, it is not easily affected by alkali or acidic materials, so it is not easily torn or broken, and is thin and inexpensive.

In addition, it is possible to finish the construction by pressing concrete pouring without the construction of the waterproof layer protection mortar after the sheet construction, as well as reducing the construction cost, it is effective to shorten the construction period.

In addition, the polyester nonwoven fabric attached to the bottom surface of the waterproof sheet of the present invention is easily impregnated by combining the asphalt mastic film waterproofing material applied to the concrete surface, the concrete base surface and the asphalt mastic film waterproofing layer and the sheet waterproof layer are completely bonded and integrated The effect of coating and sheet double waterproofing can be maximized.

Claims (4)

Waterproof sheet of a concrete structure formed by sequentially laminating a polyethylene coating agent and a polyethylene film on a top surface with a polyethylene woven fabric as a center, and then sequentially laminating a polyethylene coating agent and a polyester nonwoven fabric on a bottom surface. The method of claim 1, The polyester nonwoven fabric is a waterproof sheet of 30g / ㎡ ~ 100g / ㎡ concrete structure. The method of claim 1, The coating thickness of the polyethylene coating agent is 0.02mm to 0.05mm, the thickness of the polyethylene film is 0.02mm to 0.06mm waterproof sheet of the concrete structure. The method according to any one of claims 1 to 3, Asphalt media consisting of rubberized asphalt bitumen-based coating waterproofing material made of gel compound by adding asphalt compound as a main raw material, one of synthetic rubber adhesive, isobutylene and polyisobutylene synthetic resin, and natural mineral and cellulose inorganic filament Waterproof sheet of concrete structure further comprising a polyester non-woven fabric impregnated on the stick.