KR102461905B1 - Powder type flexible coating for waterproofing, waterproofing method using the same and waterproofing layer - Google Patents

Abstract

Disclosed are a powder-type elastic coated waterproofing material and a waterproofing treatment method using the same. Powder-type elastic coating waterproofing material according to an embodiment of the present invention, with respect to 100 parts by weight of the total weight, usually 30-50 parts by weight of cement; 5-15 parts by weight of micro cement; 40-60 parts by weight of sand having a particle size in the range of 40-100 mesh; 0.3-0.5 parts by weight of sodium fatty acid powder; and 0.1 to 0.2 parts by weight of reinforcing fibers.
According to some embodiments of the present invention, waterproofing is easy because only mixed water is added to the dry waterproofing material manufactured in the form of dry mortar and the wet waterproofing material is manufactured to perform waterproofing work, and the formed waterproofing layer has excellent adhesion and compressive strength. Because it is excellent, it becomes possible to omit the procedure for the protective mortar work on the waterproofing layer, so it is possible to reduce the cost and difficulty of the work.

Description

Powder-type elastic coated waterproofing material, waterproofing method and waterproofing layer using the same

The present invention relates to a siliceous powder coating waterproofing material, a waterproofing treatment method using the same, and a waterproofing layer, and more particularly, to a structure requiring waterproofing and leakage prevention by laminating and applying a waterproofing layer, but using the existing cement liquid waterproofing material As an alternative, it relates to a powder-type elastic coated waterproofing material that has excellent adhesion and compressive strength and can secure adhesion and compressive strength without additional mortar work on the waterproofing layer, a waterproofing treatment method using the same, and a waterproofing layer thereof will be.

In general, the cement liquid waterproofing material is a liquid waterproofing material in which 90 to 92% by weight of water and 8 to 10% by weight of sodium fatty acid are mixed.

The cement-mixed polymer-based waterproofing film applied to the present invention can be used to waterproof the exposed parts of concrete structures such as the roof of a building, parking lot, underground inner and outer walls, and bridge dams, and is not limited thereto. The same purpose can be applied to structures, wooden structures, FIBER REINFORCED PLASTICS structures, Styrofoam, tiles and stones.

The manufacturing method of waterproof cement paste for liquid waterproofing is to prepare waterproof cement paste by mixing 2 parts by weight of type 1 ordinary cement, 0 to 0.5 parts by weight of sand, and 2 to 4 parts by weight of water with respect to 1 part by weight of waterproofing agent, and apply to a thickness of 4 mm or more. carry out the work

The waterproof mortar manufacturing method for cement liquid waterproofing material is to prepare a waterproof mortar by mixing 2 parts by weight of type 1 cement, 4 to 6 parts by weight of sand, and 2 to 4 parts by weight of water to 1 part by weight of waterproofing agent, and apply it to a thickness of 4 mm or more. do.

The construction sequence of the cement liquid waterproofing material for the floor is 1st floor (ground surface cleanup and water cleaning) → 2nd layer (waterproof cement paste 1st) → 3rd layer (waterproofing liquid penetration) → 4th layer (waterproof cement paste 2nd) → 5th layer ( Waterproof protection mortar), and the construction order for walls and ceilings is 1st floor (ground surface cleaning and water cleaning) → 2nd floor (base adhesive application) → 3rd floor (waterproof cement paste) → 4th floor (waterproof protection mortar) ) in the order of

As such, the construction method of the cement liquid waterproofing material is a method of repeatedly applying waterproof cement paste or waterproofing mortar after applying waterproof cement paste and waiting for the curing time.

And since it is necessary to prepare waterproof cement paste and waterproof mortar by adding cement, sand, and water to the liquid waterproofing agent on site, it is difficult to mix in the correct mixing ratio on site. Because it is difficult to do, there is a problem that waterproofing construction that guarantees uniform quality and performance is not performed.

In addition, the liquid waterproofing agent is a waterproofing agent in which water is used as the main material, and when the liquid waterproofing agent is frozen during distribution and storage in winter, the waterproofing performance is rapidly reduced.

The present invention has been devised to solve the above problems, and one aspect of the present invention is that waterproof work is easy, the adhesive strength and compressive strength of the waterproof layer are excellent, and elasticity is given to the waterproof layer to prevent external vibration or shock. An object of the present invention is to provide a powder-type waterproofing material with excellent durability, a waterproofing method using the same, and a waterproofing layer.

According to one aspect of the present invention, a powder-type elastic coated waterproofing material is provided. Powder-type elastic coating waterproofing material according to an embodiment of the present invention, with respect to 100 parts by weight of the total weight, usually 30-50 parts by weight of cement; 5-15 parts by weight of micro cement; 40-60 parts by weight of sand having a particle size in the range of 40-100 mesh; 0.3-0.5 parts by weight of sodium fatty acid powder; and 0.1 to 0.2 parts by weight of reinforcing fibers.

According to an embodiment of the present invention, the powder-type elastic coated waterproofing material may be manufactured in the form of dry mortar, and 23-25 parts by weight of a mixed water is mixed with respect to 100 parts by weight of the powder-type elastic coated waterproofing material to form a wet waterproofing material. It may be applied to the surface of the target structure.

According to another aspect of the present invention, there is provided a waterproofing method for applying a waterproofing material to the surface of a target structure. Waterproofing method according to an embodiment of the present invention, with respect to 100 parts by weight of the total weight, usually 30-50 parts by weight of cement; 5-15 parts by weight of micro cement; 40-60 parts by weight of sand having a particle size in the range of 40-100 mesh; 0.3-0.5 parts by weight of sodium fatty acid powder; and 0.1 to 0.2 parts by weight of reinforcing fibers; blending a dry mortar comprising; preparing a wet waterproofing material by mixing 23-25 parts by weight of mixed water with 100 parts by weight of the dry mortar; applying the wet waterproofing material to the surface of the target structure; and curing the applied wet waterproofing material.

In an embodiment of the present invention, the surface of the target structure may be the upper surface of the floor structure, and the step of applying the wet waterproofing material may include applying the wet waterproofing material to the upper surface of the floor structure to a thickness of 10 to 15 mm. can

In addition, in one embodiment of the present invention, the surface of the target structure may be a side surface of the wall structure, and the step of applying the wet waterproofing material is the step of applying the wet waterproofing material to the side of the wall structure to a thickness of 5-8 mm. may include

Meanwhile, since the description of the technology disclosed in the present specification is merely an embodiment for structural or functional description, the scope of the disclosed technology should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various changes and may have various forms, it should be understood that the scope of the disclosed technology includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the disclosed technology does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the disclosed technology is limited thereby.

In addition, the meaning of the terms described in the present invention should be understood as follows. Terms such as “first” and “second” are for distinguishing one component from other components, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly a second component may be termed a first component.

Furthermore, when it is mentioned that a certain element is "connected" to another element, it may be directly connected to the other element, but it should be understood that other elements may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. On the other hand, other expressions describing the relationship between elements, that is, “between” and “between” or “neighboring to” and “directly adjacent to”, etc., should be interpreted similarly.

The singular expression is to be understood as including the plural expression unless the context clearly dictates otherwise, and terms such as “comprises” or “have” refer to the specified feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

The powder-type elastic coated waterproofing material and waterproofing method according to an embodiment of the present invention is easy to waterproof because it is possible to perform waterproofing work by adding only mixed water to a dry waterproofing material manufactured in the form of dry mortar and manufacturing a wet waterproofing material.

The powder-type elastic coated waterproofing material according to an embodiment of the present invention, the waterproofing treatment method using the same, and the waterproofing layer have excellent adhesion and compressive strength, so it is possible to omit the procedure for the protective mortar work on the waterproofing layer, thereby reducing the cost and Difficulty level can be reduced.

The powder-type elastic coated waterproofing material, waterproofing method, and waterproofing layer according to an embodiment of the present invention also provides elasticity to the waterproofing layer to increase the durability of the target structure against external vibrations or shocks.

The powder-type elastic coating waterproofing material, waterproofing method and waterproofing layer according to an embodiment of the present invention also exhibits waterproof quality and performance equivalent to that of a polymer waterproofing material for cement admixture, without using a re-emulsifying powder resin or a water-soluble polymer. It is possible to provide a powder-type coating waterproofing material at an affordable price.

1 is a flowchart illustrating a waterproof treatment method using a powder-type elastic coated waterproofing material according to an embodiment of the present invention.

Hereinafter, it will be described in more detail with reference to preferred embodiments to which the present invention pertains.

The present invention dry the liquid sodium fatty acid contained in the cement liquid waterproofing agent, and powder it in a solid state, and powdered sodium fatty acid and ordinary cement; micro cement; sand; reinforcing fibers; A powder-type elastic coated waterproofing material that can perform waterproofing work by manufacturing dry waterproofing materials in the form of dry mortar by mixing them, adding mixed water to dry waterproofing materials on site, and manufacturing wet waterproofing materials, waterproofing treatment method and waterproofing layer using the same is about

More specifically, the powder-type elastic coated waterproofing material according to an embodiment of the present invention is based on 100 parts by weight of the total weight, 30-50 parts by weight of type 1 ordinary cement, 5-15 parts by weight of micro cement, and sand (40-100 mesh) ) 40 to 60 parts by weight, 0.3 to 0.5 parts by weight of sodium fatty acid powder, and 0.1 to 0.2 parts by weight of reinforcing fibers, and may be prepared as a dry waterproofing material in the form of dry mortar.

Then, by mixing 23-25 parts by weight of mixed water with respect to 100 parts by weight of the dry waterproofing material, a wet waterproofing material can be prepared. It can be cured to form a waterproof layer.

The powder-type elastic coating waterproofing material according to an embodiment of the present invention is intended to replace the existing cement liquid waterproofing material, and a dry mortar-type dry waterproofing material is manufactured, and mixed water is added to the dry waterproofing material in the field to perform waterproofing work. Therefore, waterproofing work can be made more easily.

In addition, the waterproof layer formed using the powder-type elastic coated waterproofing material according to an embodiment of the present invention provides excellent adhesion and compressive strength, so that there is no need to perform a separate protective mortar operation on the waterproofing layer, and a predetermined elasticity is given to the waterproofing layer. Excellent durability against external vibration or shock may be provided.

Hereinafter, the composition of the powder-type elastic coated waterproofing material according to an embodiment of the present invention will be described in more detail.

In one embodiment of the present invention, a dry mortar type waterproofing material is manufactured by homogeneously mixing ordinary cement, microcement, sand, sodium fatty acid powder, and reinforcing fibers according to an optimal mixing ratio, and mixing water is added to the dry waterproofing material at the work site. An object of the present invention is to provide a powder-type elastic coated waterproofing material capable of performing waterproofing work by manufacturing a wet waterproofing material and a waterproofing treatment method using the same.

To this end, in one embodiment of the present invention, first, 30-50 parts by weight of a type of ordinary cement based on 100 parts by weight of the total; 5-15 parts by weight of micro cement; 40-60 parts by weight of sand (40-100 mesh); 0.3-0.5 parts by weight of sodium fatty acid powder; A powder-type elastic coated waterproofing material containing 0.1 to 0.2 parts by weight of reinforcing fibers is blended, but by using a mixer to mix each material to be uniformly blended, a dry mortar-type dry waterproofing material can be manufactured.

As the type 1 ordinary cement, the most commonly used cement with a fineness of 3,200 cm ² /g as type 1 ordinary portland cement (OPC) may be used. Such cement is a water-setting inorganic adhesive and is the most commonly used material for the manufacture of concrete or mortar. It is inexpensive and easy to purchase.

It may be advantageous to use 30-50 parts by weight of type 1 ordinary cement, but if you use less than 30 parts by weight of type 1 ordinary cement, voids will occur between the sand and sand, resulting in decreased waterproofing performance and lowered adhesion and compressive strength. In addition, if 50 parts by weight or more of type 1 ordinary cement is used, economic efficiency may decrease and compressive strength may decrease.

As the micro cement, cement obtained by pulverizing cement particles into ultra-fine particles, having a fineness of 6,800 cm ² /g and an average particle size of 4 μm, may be used. Such micro-cement can improve watertightness and improve adhesion and compressive strength by filling the voids between the first-class ordinary cement particles.

In addition, it has excellent chemical resistance and water-tight structure, so that it is more than three times superior to class 1 cement and more than twice superior to slag cement in chemical durability against chlorides and sulfates.

It may be advantageous to use micro cement in an amount of 5 to 15 parts by weight, but when micro cement is used in an amount of 5 parts by weight or less, voids are generated between the cement particles and watertightness is lowered, and adhesion and compressive strength may be lowered. If 15 parts by weight or more is used, economic efficiency may be deteriorated.

As the sand, sand having a particle size of 40 to 100 mesh and having a particle size of 0.2 to 0.6 mm may be used. Sand can serve as a filler for the powder-type elastic coated waterproofing material.

It may be advantageous to use sand in an amount of 40 to 60 parts by weight. If the amount of sand is 40 parts by weight or less, economic feasibility may be lowered. If it is used in an amount of 60 parts by weight or more, voids are generated between the sand particles, resulting in reduced waterproof performance and adhesion. Strength and compressive strength may be reduced.

As the sodium fatty acid powder, the liquid sodium fatty acid, which is a waterproofing agent component of the existing cement liquid waterproofing material, is dried and powdered, and sodium oleate powder and sodium stearate powder can be used alone or in combination. Sodium fatty acid powder is dissolved in mixed water and evenly distributed in the wet waterproofing material. It combines with calcium ions generated in the hydration reaction of cement to become insoluble calcium fatty acid. As calcium fatty acid is insoluble in water, it can improve water absorption and permeability by filling the voids between cement particles.

Fatty acids are chain-shaped acids having one carboxyl group (COOH) and are generally expressed as R-COOH, and react with NaOH to represent R-COO-Na. R represents a lipophilic group, Na represents a hydrophilic group.

In more detail, when the sodium fatty acid soap is dissolved in water, the part that dissolves the oil stain represents the lipophilic group, and the part that dissolves in water represents the hydrophilic group.

It may be advantageous to use the sodium fatty acid powder in an amount of 0.3 to 0.5 parts by weight. When the sodium fatty acid powder is used in an amount of 0.3 parts by weight or less, water absorption resistance and water permeability resistance may decrease, and when used in an amount of 0.5 parts by weight or more, the adhesive strength and compressive strength may be lowered.

The reinforcing fibers may serve to impart elasticity of the cured waterproofing layer. The waterproof layer reinforced with fibers prevents the waterproof layer from falling off or cracking due to external shock or vibration, thereby improving the durability of the waterproof layer. As the reinforcing fiber, nylon fiber, polypropylene fiber, PVA fiber, etc. can be used, and the length of the reinforcing fiber is 3 to 6 mm, and the reinforcing fiber can be used alone or in combination.

It may be advantageous to use 0.1 to 0.2 parts by weight of the reinforcing fiber, but if the reinforcing fiber is used in 0.1 parts by weight or less, the waterproofing layer may fall off or crack due to impact or vibration, and if it is used in an amount of 0.2 wt% or more, economic efficiency may decrease. have.

The powder-type elastic coated waterproofing material composed as above may be provided as a dry waterproofing material in the form of dry mortar, and this dry waterproofing material is mixed with 23-25 parts by weight of mixed water with respect to 100 parts by weight of the dry waterproofing material at the work site to form a wet waterproofing material. can be manufactured, and using this wet waterproofing material, the wall is coated with a thickness of 5-8 mm, and the floor is coated with a thickness of 10-15 mm and cured to form a waterproofing layer.

Hereinafter, a waterproofing method according to an embodiment of the present invention will be described in more detail with reference to FIG. 1 .

1 is a flowchart illustrating a waterproof treatment method using a powder-type elastic coated waterproofing material according to an embodiment of the present invention. Referring to FIG. 1 , the waterproofing method according to an embodiment of the present invention includes cleaning the surface of a target structure (S10), mixing dry mortar (S20), and mixing dry mortar with mixed water to provide a wet waterproofing material. It may include manufacturing (S30) and applying and curing a wet waterproofing material (S40).

First, the surface of the structure to be waterproofed may be cleaned (S10). The surface of the structure to be waterproofed may be, for example, a floor surface of a building roof or a wall exposed to the outside. The step of cleaning the surface of the target structure may include cleaning the surface and performing water cleaning. If necessary, a base adhesive or other treatment agent may be applied to the cleaned surface.

Independently of the step (S10) of cleaning the surface of the target structure, the step (S20) of mixing the dry mortar may be performed. That is, this step may be performed before or after the step of cleaning the surface of the target structure ( S10 ) or may be performed simultaneously. In a preferred embodiment, the dry mortar is manufactured in the form of a dry waterproofing material by accurately measuring and mixing each material using a metering equipment automated at the factory, and homogeneously mixing the blended materials using a mixer. It can be carried out by the process of Of course, in some embodiments, the step of mixing the dry mortar (S20) may be made at the job site.

Since the components and composition ratios of the dry mortar are the same as those of the powder-type elastic coated waterproofing material according to the embodiment of the present invention described above, the overlapping description will be omitted.

Subsequently, a step (S30) of preparing a wet waterproofing material by mixing dry mortar with mixed water may be performed. If the step of mixing the dry mortar (S20) was carried out in advance at the factory as described above, the wet waterproofing material can be manufactured only by properly adding the mixed water to the dry mortar in the form of a dry waterproofing material at the job site. , it is possible to perform waterproofing work with uniform quality and performance.

23 to 25 parts by weight of the mixed water may be appropriate as the amount of the mixed water to be mixed with respect to 100 parts by weight of the dry mortar in the step of preparing the wet waterproofing material by mixing the dry mortar with the mixed water (S30). If the mixed amount is 23 parts by weight or less, the workability of the wet waterproofing material may be deteriorated, and if it is used in more than 25 parts by weight, the adhesive strength and compressive strength may decrease, and small cracks may occur on the surface of the waterproofing layer.

Subsequently, a step (S40) of curing the wet waterproofing material after applying it to the surface of the structure to be waterproofed may be performed.

When the surface of the target structure is the upper surface of the floor structure, for example, the floor surface of the roof of a building, the step of applying the wet waterproofing material may include applying the wet waterproofing material to the upper surface of the floor structure to a thickness of 10 to 15 mm.

Due to the nature of the floor structure, higher waterproof performance is required and it can be exposed to more shocks. There is a concern, and if it is formed to a thickness exceeding 15 mm, there is a disadvantage in that economic efficiency is lowered.

On the other hand, when the surface of the target structure is the side of the wall structure, for example, the outer wall of the building, the step of applying the wet waterproofing material may include applying the wet waterproofing material to the side of the wall structure to a thickness of 5 to 8 mm.

The wall structure may have lower required waterproofing performance and impact resistance compared to the floor structure. In the case of the side of the wall structure, if the wet waterproofing material is formed to a thickness of less than 5 mm, the waterproof performance may not reach the required level, and if it is formed to a thickness exceeding 8 mm, economic efficiency is lowered.

In the case of using the cement liquid waterproofing material according to the prior art, it is difficult to expect a waterproofing layer of homogeneous quality and performance, as well as cumbersome mixing work because cement, sand, liquid waterproofing agent, and water must be individually measured and mixed at the work site.

However, if the powder-type elastic coated waterproofing material according to an embodiment of the present invention and the waterproofing method using the same are utilized, each material is accurately measured and blended using an automated metering facility at the factory, and the blended materials are mixed using a mixer. After homogeneous mixing and manufacturing of dry mortar type waterproofing materials, wet waterproofing materials can be manufactured by only properly adding mixed water to the dry waterproofing materials at the work site. It becomes possible to do waterproof work.

Such a powder-type elastic coated waterproofing material is effective in reducing labor costs because even unskilled workers can do the waterproofing in the waterproofing operation.

Hereinafter, some specific examples based on the present invention are presented, but the scope of the present invention is not limited to the examples presented below.

[Example 1]

a) Class 1 ordinary cement: 40 parts by weight

b) micro cement: 10 parts by weight

c) Sand (40-100 mesh): 49.6 parts by weight

d) sodium stearate powder: 0.3 parts by weight

e) Nylon fiber (length: 3 mm): 0.1 parts by weight

Using a mixer, the materials of a) to e) are mixed so that they are homogeneously mixed to prepare a dry mortar type of elastic coated waterproofing material, and 25 parts by weight of water is mixed with 100 parts by weight of the powdered elastic coated waterproofing material to form a waterproofing layer. formed.

[Example 2]

a) Class 1 ordinary cement: 40 parts by weight

b) micro cement: 10 parts by weight

c) Sand (40-100 mesh): 49.4 parts by weight

d) sodium stearate powder: 0.5 parts by weight

e) Nylon fiber (length: 3 mm): 0.1 parts by weight

Using a mixer, the materials of a) to e) are mixed so that they are uniformly blended to prepare a dry mortar type elastic coated waterproofing material, and 25 parts by weight of water is mixed with 100 parts by weight of the powdered elastic coated waterproofing material to form a waterproofing layer. formed.

division Based on KSF 4918 Example 1 Example 2 Test Methods compressive strength
(kgf/cm ² ) 102 500.3 463.9 KSF 4918 Adhesive strength
(kgf/cm ² ) 8.2 11.2 22.4 KSF 4918 absorption
(g) 2 1.3 0.9 KSF 4918 surface fineness No grinding No grinding No grinding KSF 4918

As a result of measuring the compressive strength, adhesion strength, absorption amount, and surface grindability of Examples 1 and 2 above according to the test method of KSF 4918 powder coating waterproofing material, the powder type of KSF 4918 shown in [Table 1] It was found to satisfy the standards for coating waterproofing materials (inorganic and organic mixed type).

According to the standards of KSF 4918 shown in [Table 1], the compressive strengths derived from Examples 1 and 2 were four or more times larger, and all of the adhesive strengths satisfy the standards provided by KSF4918. appeared to be

In addition, it was possible to check the surface friability by checking whether brittleness occurs with the item of surface brittleness by satisfying the criteria provided by KSF 4918.

As described above, although the present invention has been described with reference to the limited embodiments and drawings, the present invention is not limited to the above embodiments, which are various modifications and variations from these descriptions if those of ordinary skill in the art to which the present invention pertains. transformation will be possible. Therefore, the spirit of the present invention should be understood only by the claims described below, and all equivalents or equivalent modifications thereof will fall within the scope of the spirit of the present invention.

On the other hand, since the description of the technology disclosed in this specification is merely an embodiment for structural or functional description, the scope of the disclosed technology should not be construed as being limited to the embodiment in the description in the text. That is, since the embodiment is capable of various changes and may have various forms, it should be understood that the scope of the disclosed technology includes equivalents capable of realizing the technical idea. In addition, the object or effect presented in the disclosed technology does not mean that a specific embodiment should include all of them or only such effects, so the scope of the rights of the disclosed technology should not be construed as being limited thereby.

In addition, the meaning of the terms described in the present invention should be understood as follows. Terms such as “first” and “second” are for distinguishing one component from other components, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may be termed a first component.

Furthermore, when it is said that a certain element is "connected" to another element, it may be directly connected to the other element, but it should be understood that another element may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood as including the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the specified feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

Claims (5)

As a waterproofing method for applying a waterproofing material to the surface of a target structure,
Based on 100 parts by weight of the total weight, usually 40 parts by weight of cement; 10 parts by weight of micro cement having a fineness of 6,800 cm ² /g and an average particle size of 4 μm; 40-60 parts by weight of sand having a particle size in the range of 40 to 100 mesh and having a particle size of 0.2 to 0.6 mm; 0.3 to 0.5 parts by weight of sodium stearate powder; and 0.1 parts by weight of a nylon fiber having a length of 3 mm; manufacturing a dry mortar type waterproofing material comprising;
preparing a wet waterproofing material by mixing 25 parts by weight of water with 100 parts by weight of the dry waterproofing material;
applying the wet waterproofing material to a thickness of 5 to 8 mm when the surface of the target structure is a wall, or applying the wet waterproofing material to a thickness of 10 to 15 mm when the surface of the target structure is a floor; and
A waterproofing treatment method using a powder-type elastic coated waterproofing material, characterized in that the step of curing the applied wet waterproofing material.
A waterproofing layer, characterized in that it is constructed by the waterproofing method using the powdery elastic coated waterproofing material according to claim 1 . delete delete delete

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