KR20060085447A - Complex waterproof structure and method for constructing thereof - Google Patents

Abstract

Disclosed are a composite waterproof layer structure for exposing or non-exposing a building, and a construction method thereof. The composite waterproof layer structure includes a primer layer, a resin layer on the primer layer, a synthetic leather layer on the resin layer, an upper coating layer on the synthetic leather layer, and when used for exposure, a top coating layer on the upper coating layer. Further, when used for non-exposure, it further comprises a polyethylene film layer on the upper coating layer and a protective mortar layer on the polyethylene film layer. When the composite waterproof layer structure is applied to the flooring method, it is possible to solve the defects such as swelling problem, non-uniformity of the coating film, lowering the crack resistance, which the conventional flooring method is structurally held, and significantly shorten the construction period.

Waterproof, Synthetic Leather, Bottom

Description

Complex waterproof structure and method for constructing             

1 is a cross-sectional view of a composite waterproof layer structure for exposure according to an embodiment of the present invention; And

Figure 2 shows a cross-sectional view of a non-exposed composite waterproofing layer structure according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

       100: surface of the concrete structure 200: primer layer

300: resin layer for attaching synthetic leather

400: synthetic leather

500: sealing material 600: upper coating layer

700: top coating layer 800: polyethylene film layer

900: protective mortar layer

The present invention relates to a composite waterproof layer structure and a construction method thereof, and more particularly, to a composite waterproof layer structure and a method of manufacturing the same, which are free from defects caused by swelling, have a uniform thickness, and shorten a construction period. will be.

In general, waterproof construction is performed to form an impermeable waterproof layer on the surface of the structure in order to prevent moisture from penetrating the inside, such as the roof, floor, underground parking lot of the structure, such as buildings. As a waterproof method of such a structure, a variety of methods have been developed and used in the past, but the most commonly used methods up to now include an asphalt waterproof method, a sheet waterproof method, a coating film waterproof method, and the like.

Among them, the asphalt waterproofing method has the longest history of use, the record of use, and the accumulated construction experience. However, due to the use of heating and melting at the construction site, adverse odor occurs, and there is a risk of fire by handling fire, and in climates with four distinct seasons like Korea, the cracks of the waterproofing film occur due to temperature differences, resulting in loss of waterproof performance. There is a problem that can be done.

On the other hand, the sheet waterproofing method is a method of manufacturing a synthetic rubber or thermoplastic synthetic resin in the form of a sheet having a thickness of 1.0 ~ 3.0mm and a width of 100 ~ 200cm to adhere to the waterproof surface at the construction site to form a waterproof layer. This method has a high mechanical strength, can be installed at room temperature, has excellent durability against climate and ozone, etc., can secure a waterproof layer with a constant thickness as a whole, and is easily used for construction. However, it is difficult to waterproof the complex parts, and it is impossible to achieve perfect water tightness at the joints between the sheets, which can lead to leakage accidents.These parts are difficult to repair and vapor pressure due to the volatilization of the solvent in the adhesive or the water vaporization of the cement concrete matrix. There is a problem that the waterproof layer swells. In particular, when the swelling phenomenon of the waterproof layer occurs, the shrinkage and expansion is repeated by the temperature difference between day and night, summer and winter, the coating film is broken, and as a result, the waterproof performance is lost. In addition, since the protective layer to be installed on the upper sheet waterproof layer, there is a disadvantage that the weight of the roof is increased by increasing the overall weight of the waterproof layer.

Recently developed coating waterproofing method is divided into acrylic waterproofing, chloroprene waterproofing, urethane waterproofing, etc., depending on the type of material, which is applied to the chemical reaction or solvent volatilization after applying acrylic, chloroprene, urethane, etc. Therefore, it is a method of forming a waterproof coating film. This method has the advantage that it can be easily applied to complex areas because the coating of the waterproofing material in the liquid phase, seamless construction, good adhesion between the waterproofing material layer and the waterproof surface, high mechanical strength, and good durability. However, because of its good flowability because it is applied in the liquid phase at the work site, the film thickness becomes uneven due to the curvature of the bottom surface. Also, if the surface of the structure is uneven, the protruding portion becomes thinner and there is a risk of breakage. have. In addition, it is difficult to fundamentally solve the cracks of the lower surface because the method is in close contact with the front surface, and the swelling as in the sheet waterproofing method due to the evaporation of concrete moisture may be lost the waterproof performance. In particular, the swelling phenomenon caused by the sheet waterproofing method and the coating waterproofing method is caused by the expansion of the air layer sealed by peeling pinholes or mortars of the surface concrete in addition to the moisture of the concrete matrix. It becomes a problem.

An object of the present invention is for exposing or non-exposure of a building, which can solve problems such as swelling problem, unevenness of coating, degradation of crack resistance, and complete watertightness at the joint between sheets, while maintaining the advantages of the above-described conventional waterproofing methods. It is to provide a composite waterproof layer structure.

Another object of the present invention is to provide a construction method of the composite waterproof layer structure for exposing or non-exposing the building.

One aspect of the present invention for achieving the above object is (i) a primer layer; (ii) a resin layer for attaching synthetic leather on the primer layer; (iii) a synthetic leather layer on the resin layer for attaching synthetic leather; (iv) an upper coating layer on the synthetic leather layer; And (v) to provide a composite waterproof layer structure for the exposure of the building comprising a top coating layer on the upper coating layer.

Another aspect of the invention is (i) a primer layer; (ii) a resin layer for attaching synthetic leather on the primer layer; (iii) a synthetic leather layer on the resin layer for attaching synthetic leather; (iv) an upper coating layer on the synthetic leather layer; (v) a polyethylene film layer on the upper coating layer; And (vi) to provide a non-exposed composite waterproof layer structure of the building comprising a protective mortar layer on the polyethylene film layer.

Another aspect of the present invention comprises the steps of: (i) cleaning the foreign matter on the concrete structure base surface and cleaning up the defects; (ii) forming a primer layer by applying a primer on the base surface; (iii) applying a resin for attaching synthetic leather on the primer layer, and then attaching synthetic leather; (iv) forming an upper coating layer on the synthetic leather; And (v) to provide a construction method of the composite waterproof layer structure for the exposure of the building comprising the step of forming a top coating layer on the resin coating layer.

Another aspect of the present invention comprises the steps of (i) cleaning the foreign matter on the base surface of the concrete structure, and cleaning up the defects; (ii) forming a primer layer by applying a primer on the base surface; (iii) applying a polyurethane resin on the primer layer, and then attaching synthetic leather; (iv) forming an upper coating layer on the synthetic leather; (v) attaching a polyethylene film on the upper coating layer; And (vi) to provide a construction method of the non-exposed composite waterproof layer structure of the building comprising the step of forming a protective mortar layer on the polyethylene film.

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

First, the synthetic leather included in the composite waterproof layer structure of the present invention will be described.

Hereinafter, the term "synthetic leather" used in the present invention refers to a one-component polyurethane resin solution is prepared by coating a nonwoven fabric or impregnated fabric on top of a conventional method, for example, a dry method or a wet-dry method, The term "synthetic leather layer" refers to one layer of the composite waterproof layer structure of the present invention consisting of the "synthetic leather".

1 is a cross-sectional view of a composite waterproof layer structure for exposure according to an embodiment of the present invention.

With reference to FIG. 1, the composite waterproof layer structure for exposure of this invention and its construction method are demonstrated.

In the composite waterproof layer structure of the present invention, first, the primer layer 200 formed on the concrete structure base surface 100 is included.

In order to form the primer layer 200 on the concrete structure base surface 100, the foreign substances of the concrete structure base surface are cleaned and the defects are cleaned up. Thereafter, a primer is applied on the base surface to form a primer layer 200. The primer layer is to increase the adhesion between the base surface and the resin layer 300, epoxy resin, polyurethane resin, acrylic resin, rubberized asphalt resin, polyurea resin, polyurethane-polyurea resin and inorganic elastic It may be formed using one or more resins selected from coating materials.

After the resin is coated on the primer layer 200 to form the resin layer 300, the synthetic leather is brought into close contact with the resin layer 300 to form the synthetic leather layer 400. Examples of the resin applied on the primer layer 200 include polyurethane. In addition, when the synthetic leather is attached, to maintain a certain distance between the synthetic leather, preferably the synthetic leather is attached at intervals of 5 ~ 10mm.

After attaching the synthetic leather, it is possible to fill the sealing material 500 between the attached synthetic leather and the synthetic leather, if necessary. This is to prevent the floating of the attached synthetic leather, and to maintain a smooth shape of the composite composite waterproof layer structure. Examples of sealants that can be used include urethane compounds, acrylic compounds, butyl compounds, silicone compounds, modified silicone compounds, and polysulfide compounds.

The upper coating layer 600 is formed on the synthetic leather layer 400 prepared as described above. The upper coating layer 600 is formed of polyurethane resin, acrylic resin, epoxy resin, rubberized asphalt resin, polyurea resin, polyurethane-polyurea resin, polyester resin and inorganic elastic coating material on top of the synthetic leather layer 400. It can be formed by applying one or more selected.

Preferred examples of the polyurethane resin usable for forming the upper coating layer of the present invention are two-component poly having a hardness (Shore A30-100) in which the weight ratio of the main isocyanate to the curing agent polyol and the amine compound is 1: 1 to 1: 5. A urethane resin or a one-component polyurethane resin is mentioned. Moreover, as a preferable example of a polyurea resin, the polyurea resin which has hardness (Shore A30-100, Shore D10-80) whose volume ratio of the main isocyanate and the amine compound which is a hardening | curing agent is 1: 1-1: 2. On the other hand, a preferred example of the polyurethane-polyurea resin is a polyurethane having a hardness (Shore A30-100, Shore D10-80) in which the volume ratio of the main isocyanate and the curing agent amine-polyol compound is 1: 1 to 1: 4. And polyurea resins.

The above-mentioned polyurethane resin is applied to the upper portion of the synthetic leather layer 400 with a trowel, roller, or rag, or the above-described polyurea resin or polyurethane-polyurea resin is applied to the upper portion of the synthetic leather layer 400. The upper coating layer 600 can be formed by applying with a liquid high pressure spray equipment.

The top coating material is coated on the upper coating layer 600 thus formed to form the top coating layer 700. Examples of the top coating material include urethane compounds, acrylic compounds, and the like.

The formation of the top coating layer 700 may increase weather resistance against ultraviolet rays, ozone and acid rain of an exposed structure such as a rooftop.

2 is a cross-sectional view of a non-exposed composite waterproofing layer structure according to an embodiment of the present invention.

With reference to Figure 2, the non-exposed composite waterproofing layer structure of the present invention and its construction method will be described.

The primer layer 200 on the concrete structure base surface 100, the resin layer 300 on the primer layer 200, the synthetic leather layer 400 on the resin layer, and the upper coating layer 600 on the synthetic leather layer 400. And the forming method of the sealing material 500 that can be included if necessary is the same as in the composite waterproof layer structure for exposure described above with reference to FIG.

In addition, by attaching one layer of the protective polyethylene film on the upper coating layer 600 to form a polyethylene film layer 800, to prevent damage by the pressed concrete.

By applying a protective mortar on the polyethylene film layer 800 thus formed to form a protective mortar layer 900, the composite waterproof layer structure for non-exposure of the present invention is completed.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

Example 1

A one-component urethane adhesive reinforcing primer (Gangnam Hwasung Co., Ltd.) after a hole of 10 mm in diameter penetrating the center of a concrete slab for sidewalks with a thickness of 60 mm × 300 mm × 300 mm Product: PLYADEK T-44) was applied in an amount of 150 g / m 2, followed by a polyurethane resin. A synthetic leather having a mass of 250 g / m 2 was attached on top of the uncured polyurethane resin, and thereafter, a two-component urethane waterproofing material (PANDEX TP-manufactured by Gangnam Hwasung Co., Ltd.) of the urethane rubber-based first class product of 'KSF-3211 roof waterproofing material'. 651 / HB-220) was applied in an amount of 1.3 kg / m &lt; 2 &gt;

After curing for 1 week at room temperature, and then pressurized for about 2 hours at a nitrogen pressure of 1.5kg / ㎡ through the bottom hole of the concrete plate at 60 ℃, and observed whether there is a swelling phenomenon, the results are shown in the following table 1 is shown.

Example 2

Except for using a synthetic leather having a mass of 500g / ㎡, using the same method as in Example 1 was observed whether there is a swelling phenomenon, the results are shown in Table 1 below.

Example 3

Instead of applying two-component urethane waterproofing material (PANDEX TP-651 / HB-220, manufactured by Gangnam Hwasung Co., Ltd.) on synthetic leather with a mass of 250 g / m2, Using the same method as in Example 1 except that the application using a dedicated two-component high pressure spray equipment was observed whether there is a swelling phenomenon, the results are shown in Table 1 below.

Example 4

Instead of applying two-component urethane waterproofing material (PANDEX TP-651 / HB-220, manufactured by Gangnam Hwasung Co., Ltd.) on synthetic leather with a mass of 500 g / m2, Using the same method as in Example 1 except that the application using a dedicated two-component high pressure spray equipment was observed whether there is a swelling phenomenon, the results are shown in Table 1 below.

Example 5

 Except for applying polyurethane-polyurea resin (STELACOAT KA-770 / KR-770 manufactured by Gangnam Hwasung Co., Ltd.) instead of polyurea resin (Steelcoat KA-690 / KR-690 manufactured by Gangnam Hwasung Co., Ltd.) on synthetic leather. Using the same method as in Example 1 to see if there is a swelling phenomenon, the results are shown in Table 1 below.

Example 6

Except for applying the polyurethane-polyurea resin (STELACOAT KA-770 / KR-770 manufactured by Gangnam Hwasung Co., Ltd.) on the synthetic leather instead of the polyurea resin (STELACOAT KA-690 / KR-690 manufactured by Gangnam Hwasung Co., Ltd.). Then, using the same method as in Example 1 to observe whether there is a swelling phenomenon, the results are shown in Table 1 below.

Comparative Example 1

Punch a hole as shown in Example 1 and put a release paper, and then bonded 150 g / ㎡ (thickness 1.5 mm) polyester nonwoven fabric on the sidewalk concrete plate coated with a one-component polyurethane adhesive reinforcement primer, thereon After applying the polyurethane waterproofing material as in Example 1, the swelling phenomenon was observed using the same method as in Example 1 and the results are shown in Table 1.

Comparative Example 2

The same method as in Example 1 was applied after the punching and placing the release paper as in Example 1 and then applying the polyurethane waterproofing material as in Example 1 on the concrete plate for the press coated with a one-component polyurethane adhesive reinforcing primer Using the swelling phenomenon was observed and the results are shown in Table 1.

Bloat Example 1 none Example 2 none Example 3 none Example 4 none Example 5 none Example 6 none Comparative Example 1 intumescence Comparative Example 2 intumescence

The composite waterproof layer structure according to the present invention includes a synthetic leather for the exposed or non-exposed waterproofing of the structure, there is no failure caused by the swelling, the thickness of the coating film is uniform, it is possible to shorten the construction period.

Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. It will be appreciated.

Claims (10)

In the waterproof layer structure of a building,        (i) a primer layer; (ii) a resin layer on the primer layer; (iii) a synthetic leather layer on the resin layer; (iv) an upper coating layer on the synthetic leather layer; And (v) a top coating layer on the upper coating layer Composite waterproof layer structure for exposure of the building comprising a. In the waterproof layer structure of a building,        (i) a primer layer; (ii) a resin layer on the primer layer; (iii) a synthetic leather layer on the resin layer; (iv) an upper coating layer on the synthetic leather layer; (v) a polyethylene film layer on the upper coating layer; And (vi) a protective mortar layer on the polyethylene film layer Composite waterproof layer structure for non-exposure of a building comprising a. The method of claim 2, wherein the primer layer is formed of at least one selected from epoxy resin, polyurethane resin, acrylic resin, rubberized asphalt resin, polyurea resin, polyurethane-polyurea resin, and inorganic elastic coating material. Composite waterproof layer structure for non-exposure of buildings. The composite waterproof layer structure for non-exposure of a building according to claim 2, wherein the synthetic leather constituting the synthetic leather layer is a synthetic leather prepared by coating an impregnated fabric or a nonwoven fabric with a one-component polyurethane resin solution. The composite waterproof layer structure for non-exposure of a building according to claim 2, wherein a space of 5 to 10 mm is provided between the synthetic leather and the synthetic leather when the synthetic leather is attached to form the synthetic leather layer. The method of claim 2, wherein the upper coating layer is at least one selected from polyurethane resin, acrylic resin, epoxy resin, rubberized asphalt resin, polyurea resin, polyurethane-polyurea resin, polyester resin and inorganic elastic coating material. The composite waterproof layer structure for non-exposure of a building, characterized in that formed as. (i) cleaning foreign matter on the base of the concrete structure and cleaning up any defects; (ii) forming a primer layer by applying a primer on the base surface; (iii) applying resin on the primer layer and then attaching synthetic leather; (iv) forming an upper coating layer on the synthetic leather; And (v) a method for constructing a composite waterproof layer structure for exposing a building, including forming a top coating layer on the upper coating layer. (i) cleaning foreign matter on the base of the concrete structure and cleaning up any defects; (ii) forming a primer layer by applying a primer on the base surface; (iii) applying resin on the primer layer and then attaching synthetic leather; (iv) forming an upper coating layer on the synthetic leather; (v) attaching a polyethylene film on the upper coating layer; And (vi) a method of constructing a composite waterproof layer structure for non-exposure of a building comprising applying a protective mortar on the polyethylene film. The method of claim 8, further comprising the step of filling the gap between the attached synthetic leather and the synthetic leather with a sealing material after attaching the synthetic leather. The method of claim 9, wherein the sealing material is at least one selected from urethane compounds, acrylic compounds, butyl compounds, silicone compounds, modified silicone compounds, and polysulfide compounds.

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