KR102773164B1 - Eco-friendly coating waterproofing composition, coating waterproofing material manufactured therefrom, and construction method thereof - Google Patents

Abstract

The present invention relates to an eco-friendly coating waterproofing material composition comprising: a first agent containing ethylene vinyl acetate (EVA) and a loess/polymer composite; and a second agent containing silica sand, cement, an admixture, and livestock manure cellulose, a coating waterproofing material manufactured therefrom, and a construction method thereof. The purpose of the present invention is to provide an eco-friendly coating waterproofing material containing a loess/polymer composite and livestock manure cellulose. In addition, it is possible to provide a coating waterproofing material for forming a waterproof layer having high tensile strength, excellent watertightness, and excellent durability by containing an inorganic material.

Description

{Eco-friendly coating waterproofing composition, coating waterproofing material manufactured therefrom, and construction method thereof}

The present invention relates to an eco-friendly waterproofing coating composition, a waterproofing coating manufactured from the same, and a construction method thereof, and more specifically, to a waterproofing coating composition having excellent adhesion to a concrete floor surface and improved watertightness and durability, and a waterproofing coating using the same.

Concrete is a discontinuous, anisotropic, and inhomogeneous hardening substance made by mixing cement, aggregate, water, and other admixtures, and its physical and chemical properties are very diverse and complex. Such concrete has many pores or microcracks from the manufacturing stage due to hydration reaction, bleeding, hydration heat, plastic shrinkage, and different characteristics of materials. When concrete hardens, microcracks that occurred during the manufacturing stage grow into cracks due to various factors such as drying shrinkage, thermal stress, and external load.

When rainwater, etc. seeps into cracks in urban structures like the above, some of it does not evaporate and instead seeps inside, adversely affecting the durability of the structure. Therefore, various waterproofing materials are applied to the surface of building structures. In particular, cracks in concrete are the biggest cause of water leakage in structures, and chemical corrosion is a factor that reduces the long-term durability of structures. Waterproofing methods are applied to areas that require such waterproofing treatment to form a waterproof layer, thereby preventing damage to buildings or facilities due to moisture and reducing their durability.

These waterproofing methods are broadly divided into sheet waterproofing methods in which sheets with waterproofing properties are attached to the surface of a building, and film waterproofing methods in which a liquid coating material is applied to the surface of a building, dried, and hardened to form a waterproof coating material. Film waterproofing methods are further classified into asphalt waterproofing methods and polymer film waterproofing methods.

Asphalt waterproofing technology has the longest history of use and has accumulated a lot of construction experience, but because it must be heated and melted at the construction site, the work environment safety is low, and there is a problem that the waterproofing performance is easily lost due to self-cracking of the waterproofing film caused by temperature differences.

Accordingly, the polymer coating waterproofing method has been mainly applied recently. This method is a method in which a polymer waterproofing coating material with a waterproofing function, such as urethane or epoxy, is applied to the surface to be constructed, and a waterproofing coating layer is formed through a chemical reaction or solvent volatilization. It has the advantages of being easy to construct and having good adhesion to the construction surface, but since it is a method that adheres completely to the floor surface, it is difficult to fundamentally resolve cracks in the subfloor or respond to behavior according to temperature and environment, and there is a high possibility that swelling, similar to sheet waterproofing, may occur due to evaporation of moisture in the concrete, which may result in loss of waterproofing performance. In addition, there is also a problem that the toxicity problem arises from chemicals.

Therefore, elastic film waterproofing materials are widely used to prevent this. Elastic film waterproofing materials are two-component waterproofing materials composed of cement-based inorganic substances that harden by reacting with water and a synthetic resin emulsion-type binder component, and have the advantage of adding elasticity to the waterproofing layer and responding to cracks in structures.

However, this also has the problem of harmfulness due to the use of chemicals, and when replacing it with environmentally friendly materials, research is needed on waterproofing films that can reduce environmental harm to humans without compromising the durability and quality of waterproofing films.

Republic of Korea Patent Publication No. 10-1870122 (June 18, 2018)

In order to solve the above problems, the present invention aims to provide an eco-friendly coating waterproofing composition, a coating waterproofing material manufactured from the same, and a construction method thereof. In addition, the eco-friendly coating waterproofing material composition contains an inorganic material to form a waterproofing layer having high mechanical strength and excellent water-tightness, durability, and adhesion, and the present invention aims to provide a coating waterproofing material manufactured from the same, and a construction method thereof.

However, the above purpose is exemplary, and the technical idea of the present invention is not limited thereto.

One aspect of the present invention for achieving the above object relates to an eco-friendly waterproofing coating composition, characterized by including: a first agent containing ethylene vinyl acetate (EVA) and a yellow clay/polymer complex; and a second agent containing silica, cement, an admixture, and cellulose flakes.

In the above aspect, the yellow soil/polymer complex may include yellow soil, polyammonium salt, and polyacrylic acid salt.

In the above aspect, the yellow soil/polymer complex may be included in an amount of 50 to 100 parts by weight based on 100 parts by weight of the ethylene vinyl acetate (EVA).

In the above aspect, the polyammonium salt may be included in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of the yellow soil.

In the above aspect, the polyammonium salt may have a weight average molecular weight of 50,000 to 100,000 g/mol.

In the above aspect, the polyacrylic acid salt may be included in an amount of 1 to 6 parts by weight based on 100 parts by weight of the yellow soil.

In the above aspect, the polyacrylic acid salt may have a weight average molecular weight of 5,000 to 10,000 g/mol.

In the above aspect, the ethylene vinyl acetate (EVA) may be included in the emulsion so that the solid content is 45 to 55 wt%.

In the above aspect, the emulsion including ethylene vinyl acetate (EVA) may have a viscosity of 500 to 1,000 cp (25°C).

In the above aspect, the silica may have a particle size of 0.35 mm or less.

In the above aspect, the silica may be included in an amount of 100 to 300 parts by weight based on 100 parts by weight of the ethylene vinyl acetate (EVA).

In the above aspect, the cement may be included in an amount of 60 to 80 parts by weight based on 100 parts by weight of the ethylene vinyl acetate (EVA).

In the above aspect, the admixture may be included in an amount of 0.5 to 1.5 parts by weight based on 100 parts by weight of the ethylene vinyl acetate (EVA).

In the above aspect, the cellulose may be included in an amount of 0.2 to 2 parts by weight relative to 100 parts by weight of the ethylene vinyl acetate (EVA).

In addition, another aspect of the present invention relates to an eco-friendly coating waterproofing material characterized by being manufactured from the eco-friendly coating waterproofing material composition.

In addition, another aspect of the present invention relates to a method for constructing an eco-friendly waterproofing coating, which includes applying and curing the eco-friendly waterproofing coating composition.

The eco-friendly waterproofing film composition according to the present invention, the waterproofing film manufactured therefrom, and the construction method thereof provide an eco-friendly waterproofing film composition having excellent adhesion to a concrete floor surface, improved watertightness and durability, and containing a yellow clay/polymer complex to reduce the emission of hazardous substances, and can provide a construction method thereof.

Figure 1 illustrates a flow chart of a manufacturing process for an eco-friendly waterproof coating material according to an example of the present invention.

Hereinafter, an eco-friendly waterproofing film composition according to the present invention, a waterproofing film manufactured from the same, and a construction method thereof will be described in detail. The drawings introduced below are provided as examples so that those skilled in the art can sufficiently convey the spirit of the present invention. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other forms, and the drawings presented below may be illustrated in an exaggerated manner to clarify the spirit of the present invention. At this time, if there is no other definition in the technical and scientific terms used, they have the meaning commonly understood by those skilled in the art to which this invention belongs, and in the following description and the attached drawings, a description of well-known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted.

One aspect of the present invention relates to an eco-friendly waterproofing coating composition, characterized by including: a first agent containing ethylene vinyl acetate (EVA) and a yellow clay/polymer complex; and a second agent containing silica, cement, an admixture, and cellulose flakes.

The above-mentioned eco-friendly waterproofing film composition contains a yellow clay/polymer complex and cellulose, so it is eco-friendly, and contains inorganic materials, so that mechanical properties such as tensile strength, elongation, and tear strength are improved, and it has the advantage of being able to form a waterproofing layer with excellent watertightness and durability. In addition, it forms an elastic waterproofing layer with good adhesion to a concrete floor surface, so that it can provide a waterproofing film with crack resistance.

Hereinafter, an eco-friendly waterproofing coating composition according to an example of the present invention will be described in more detail.

In one example of the present invention, the first agent contains ethylene vinyl acetate (EVA) and a yellow clay/polymer complex, and first, the yellow clay/polymer complex will be described.

The above-mentioned loess/polymer complex is characterized by including loess, polyammonium salt, and polyacrylate. The above-mentioned loess is a main material of an eco-friendly waterproofing coating composition, refers to a clay mineral with excellent far-infrared radiation, and can be used to improve the watertightness and mechanical strength of the waterproofing coating. Any conventional loess in the art may be used as the above-mentioned loess, but it is preferable to use a lump-free one that passes 100% through a 4.75 mm sieve, or a one that is dried and then powdered so that it can maintain a solid state even when moisture seeps in after being mixed with other compositions. The above-mentioned loess is a fine particle containing numerous inorganic substances such as silica (SiO ₂ ), alumina (Al ₂ O ₃ ), iron (Fe), magnesium (Mg), sodium (Na), and potassium (K), and has many medicinal properties and minerals beneficial to the human body. However, since the above yellow clay has a problem of reduced dispersibility due to its hydrophobic surface and self-aggregation, it requires chemical treatment to improve dispersibility and ensure viscosity stability when included in a waterproof coating composition.

The above polyammonium salt is one of the polymers included in the loess/polymer complex for chemical treatment of the loess, and can be used having a solid content of about 35 wt% and a weight average molecular weight of 50,000 to 100,000 g/mol. As a more specific example, it can be poly(diallyldimethylammonium chloride) in an aqueous solution. The polyammonium salt is for swelling the loess in the aqueous solution to induce uniform dispersion, and can be added in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of the loess. When it is added in an amount less than 0.1 part by weight, uniform dispersion of the loess in water cannot be expected, and when it is added in an amount exceeding 3 parts by weight, the viscosity of the composition increases, which reduces rheology and may deteriorate the physical properties when manufacturing a waterproofing coating in the future. The slurry in which the loess is swollen by the polyammonium salt has improved stability and can have a stable viscosity during storage when polyacrylic acid is added thereafter.

The above polyacrylic acid salt is another one of the polymers included in the above yellow soil/polymer complex, and can be used having a weight average molecular weight of 5,000 to 10,000 g/mol. The polyacrylic acid salt is added to maintain the viscosity of the yellow soil slurry whose dispersibility has been increased by the polyammonium salt, and a more specific example thereof may be sodium polyacrylate. The polyacrylic acid salt may be included in an amount of 1 to 6 parts by weight with respect to 100 parts by weight of yellow soil, and when it is added in an amount less than 1 part by weight, it does not contribute to the stability of maintaining viscosity, and when it is added in an amount exceeding 6 parts by weight, the slurry becomes highly viscous, which causes a problem in that the storage stability is reduced.

As described above, the loess/polymer composite manufactured by including loess, polyammonium salt, and polyacrylate can maintain a constant viscosity to facilitate the workability of the coating waterproofing composition due to the polymer constituting the composite, and can exhibit excellent water-repelling/maintenance effects. In addition, since the dispersibility and compatibility of loess are improved, when mixed with other coating waterproofing compositions, large or small bubbles can be maintained constantly, and thereby the storage stability, durability, and adhesion performance of the coating waterproofing material can be improved.

In order to achieve the desired effect, the yellow clay/polymer complex may be included in an amount of 50 to 100 parts by weight relative to 100 parts by weight of the ethylene vinyl acetate (EVA). In a range of less than 50 parts by weight, the effect of adding the complex is not as expected, and in a range of more than 100 parts by weight, the content of EVA is relatively reduced, so that the adhesive strength decreases and it is difficult to form a waterproofing material.

The above ethylene vinyl acetate (EVA) is a polymer obtained by copolymerizing ethylene and vinyl acetate polymer, and is a material that has been used for purposes such as children's foam stickers, packaging materials, adhesive cushions, and buoyancy, and is also used as an eco-friendly adhesive. The above ethylene vinyl acetate (EVA) can be used when included in the emulsion so that the solid content is 45 to 55 wt%. Within the range satisfying the above-mentioned solid content of ethylene vinyl acetate, the compatibility and bonding force between the waterproofing film compositions are improved, and when the waterproofing film is applied in the future, the adhesive force with the concrete floor surface can be excellently expressed. In addition, the waterproofing film can be provided with elasticity by including the above ethylene vinyl acetate, and there is an excellent effect of crack resistance. The emulsion containing the above ethylene vinyl acetate can be used having a viscosity of 500 to 1,000 cp (25° C., 60 rpm) and a pH of 4.5 to 6.5.

Next, I will explain the second subject.

The above second agent contains silica, cement, an admixture, and cellulose slurry, and can be mixed with the above first agent and cured to produce an eco-friendly waterproofing coating material. The silica is sand containing silicon dioxide (SiO ₂ ), which is an anhydrous silicic acid, and can induce strong bonding of the coating material, thereby providing bonding strength and wear resistance to the waterproofing coating material. The silica sand may have a particle size of 0.35 mm or less, and it is more preferable to use silica sand having a particle size of 0.2 mm or less in order to ensure that the mixed composition fills every corner well and exhibits a beautiful appearance. The above silica sand can be included in an amount of 100 to 300 parts by weight relative to 100 parts by weight of ethylene vinyl acetate (EVA). If the silica sand is included in an amount less than 100 parts by weight, there is a problem that the strength and bonding force are reduced, and if it exceeds 300 parts by weight, there is a problem that the density of the waterproofing film is excessively increased, resulting in a decrease in self-leveling property.

The cement mentioned above may be used without particular limitation as long as it is commonly used in a waterproofing coating composition, and for example, it may be portland cement, fly ash cement, blast furnace slag cement, etc. Preferably, the cement suitable for use in the present invention may be portland cement. The cement may be added in an amount of 60 to 80 parts by weight relative to 100 parts by weight of ethylene vinyl acetate (EVA).

The above admixture can be used without limitation as long as it is usually used in a waterproofing composition for coatings, and in order to provide a desired function, it is suitable for KS F 2560, KS F 2563, KS L 5405, or at least one of an AE agent, an AE reducing agent, a waterproofing agent, a rust inhibitor, a retarder, a fluidizing agent, and a setting and hardening regulator can be selected and used. The above admixture can be added in an amount of 0.5 to 1.5 parts by weight relative to 100 parts by weight of the ethylene vinyl acetate (EVA), and a reducing agent can be used to reduce the amount of cement used.

In addition, the coating waterproofing composition of the present invention may use a reinforcing material capable of improving the strength and durability of the final coating waterproofing material. Preferably, cellulose having excellent strength and good compatibility with cement may be added.

As a specific example, the cellulose may be environmentally friendly cellulose. The cellulose is used as a reinforcing material to enhance the performance of the waterproof coating. When the cellulose is added to the waterproof coating composition, it acts as a kind of net to enhance the structure of the waterproof coating, thereby reducing cracks and damage caused by external impact and increasing the durability of the waterproof coating.

The above-mentioned livestock manure cellulose is separated into livestock manure cellulose of 200 mesh or larger and organic matter of less than 200 mesh through pretreatment of fermented livestock manure to remove moisture, followed by solid-liquid separation, and among these, the livestock manure cellulose can be separated and used. In this way, livestock manure, which was previously recycled as simple compost and had limited uses, can be converted into an industrial energy source or material source and used as the waterproofing composition of the coating film of the present invention, which has the advantage of solving environmental problems and creating added value.

The water used in the above 1st or 2nd agent can be ordinary tap water, and if other water is used, it shall be in accordance with KS F 4009 Annex 2 ‘Water used in ready-mixed concrete mixtures’.

In addition, the above two agents may include at least one selected from among a binder, a pigment, a soil stabilizer, and a soil hardening agent as needed, and the specific type and content may be selected within a normal range.

In addition, another aspect of the present invention relates to an eco-friendly waterproofing coating material characterized in that it is manufactured by mixing a first agent containing ethylene vinyl acetate (EVA) and a yellow clay/polymer complex and a second agent containing silica, cement, an admixture, and cellulose flakes. The eco-friendly waterproofing coating material can be constructed according to an eco-friendly waterproofing coating material construction method including a step of applying and curing the eco-friendly waterproofing coating composition; and the application process and the curing process can be performed according to a conventional method used in the art.

Hereinafter, the eco-friendly waterproofing film composition according to the present invention, the waterproofing film manufactured therefrom, and the construction method thereof will be described in more detail through examples. However, the following examples are only a reference for explaining the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

Also, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is only for the purpose of effectively describing particular embodiments and is not intended to be limiting of the invention.

[Manufacturing of loess/polymer complex and preparation of first agent]

10 g of polydiaryl dimethyl ammonium chloride (solid content 35 wt%, weight average molecular weight 80,000 g/mol) was added to a suspension of yellow clay (500 g) dispersed in 2 L of water, stirred, and 25 g of sodium polyacrylate (weight average molecular weight 5,100 g/mol) was added to the swollen dispersion, stirred, and a yellow clay/polymer complex slurry was prepared. Then, 2,000 g of EVA emulsion having a solid content of 50 wt% (EVA content: 1,000 g) was added to prepare Agent 1.

[2nd Raw Materials and Manufacturing]

A second agent having a solid content of approximately 50 wt% was prepared by mixing 2,000 g of silica (size 0.18 mm), 700 g of portland cement, 10 g of sodium polynaphthalene sulfonate as an admixture, 15 g of cellulose powder, and 9 g of a soil solidifying agent in 6 L of water.

[Manufacturing Example 1 and Comparative Manufacturing Examples 1 to 3]

1) Manufacturing Example 1: A waterproofing coating composition was manufactured by mixing the first and second agents including the above yellow clay/polymer complex slurry and EVA emulsion.

2) Comparative Manufacturing Example 1: Comparative Manufacturing Example 1 was manufactured using the same process as Manufacturing Example 1, except that the yellow soil/polymer complex was not added and the amount of water in the second agent was changed to 5.5 L.

3) Comparative Manufacturing Example 2: Comparative Manufacturing Example 2 was manufactured using the same process as Manufacturing Example 1, except that only yellow soil was added instead of the yellow soil/polymer complex.

4) Comparative Manufacturing Example 3: Comparative Manufacturing Example 3 was manufactured using the same process as Manufacturing Example 1, except that no cellulose was added.

The ingredient contents of the above Manufacturing Example 1 and Comparative Manufacturing Examples 1 to 3 are shown in Table 1 below.

Unit (g) Manufacturing example 1 Comparative manufacturing example 1 Comparative manufacturing example 2 Comparative manufacturing example 3 1st ocher/
Polymer composite ocher 500 - 500 500 polyammonium salt 10 - - 10 polyacrylate 25 - - 25 EVA 1,000 1,000 1,000 1,000 2nd issue Silica 2,000 2,000 2,000 2,000 cement 700 700 700 700 Admixture 10 10 10 10 Cellulose 15 15 15 - etc 9 9 9 9

[Characteristic evaluation method]

The compositions of Manufacturing Example 1 and Comparative Manufacturing Examples 1 to 3 were cured to manufacture a waterproofing coating material, and the properties thereof were evaluated for tensile performance, tear performance, and adhesion performance according to the KS F 3211: 2015 test standard by the following method, and the results are shown in Table 2 below. In addition, for the test specimen of Manufacturing Example 1, the watertightness performance, total volatile organic compounds (TVOC) emission, toluene emission, and formaldehyde emission were evaluated according to the KS F 4937: 2019 test standard, and the results are shown in Table 3.

Test items Manufacturing example 1 Comparative manufacturing example 1 Comparative manufacturing example 2 Comparative manufacturing example 3 Tensile performance Tensile strength (N/㎟) 3.1 1.4 1.6 1.3 Elongation at break (%) 440 310 312 315 Heat performance Tear strength (N/㎜) 10.6 6.2 6.9 6.3 Adhesive performance Bond strength (N/㎟) (untreated) 0.8 0.6 0.8 0.7 Bond strength (N/㎟)
(After repeated cold and hot treatment) 0.7 0.5 0.5 0.6

Test items Manufacturing example 1 Watertight performance No problem TVOC emission (mg/㎡*h) less than 0.020 Toluene emission (mg/㎡*h) less than 0.005 Formaldehyde emission (mg/㎡*h) less than 0.005

Looking at Table 2 above, it can be seen that Manufacturing Example 1 containing the yellow clay/polymer composite has excellent mechanical properties with a tensile strength of 3.1 N/mm2 and an elongation at break of 440%. In addition, the tear strength is 10.6 N/mm, and the adhesion performance is not excessively reduced even after repeated cold and hot treatments, showing excellent durability. However, in the case of Comparative Manufacturing Example 1 that does not include the yellow clay/polymer composite, all of the tested items decreased compared to the values of Manufacturing Example 1, and from this, the effect of improving the properties of the eco-friendly waterproofing coating including the yellow clay/polymer composite could be seen. In the case of the above comparative manufacturing example 2 where only loess was added, the effect of improving the mechanical properties of the waterproofing coating material was minimal, and compared to the fact that the adhesive performance decreased to 0.5 N/mm2 after repeated cold and hot treatments, it was confirmed that when loess was added to form a complex with a polymer, the effect of improving the properties and durability could be maximized due to the increase in dispersibility and viscosity stability.

In addition, in the case of Comparative Manufacturing Example 3, the overall physical properties were improved by including the yellow soil/polymer composite, but the tensile strength value was 1.3 N/mm2 because the cellulose was not included.

Looking at Table 3 above, it was confirmed that when the yellow soil/polymer composite of Manufacturing Example 1 was included, there was no decrease in watertightness performance, and the total volatile organic compounds (TVOC, Total Volatile Organic Compounds) emissions, toluene emissions, and formaldehyde emissions were below the standard values, so that an environmentally friendly waterproofing coating material could be manufactured.

[Comparative Example 1 and Manufacturing Examples 1 and 2]

In order to evaluate the mechanical strength according to the content of the above yellow clay/polymer composite, in addition to adjusting the yellow clay/polymer composite content in the waterproofing film of Manufacturing Example 1 as shown in Table 4 below, waterproofing film specimens of Comparative Example 1 and Examples 1 to 2 were manufactured using the same process as Manufacturing Example 1.

Weight (g) Comparative Example 1 Example 1 Example 2 EVA 1,000 1,000 1,000 ocher/
Polymer
Complex ocher 370 750 930 polyammonium salt 7.4 15 18.6 polyacrylate 18.5 37.5 46.5 Total weight 395.9 802.5 995.1

[Characteristic evaluation of Comparative Example 1 and Examples 1 to 2]

The mechanical properties were evaluated using the same test method as the characteristic evaluation of Manufacturing Example 1 and Comparative Manufacturing Examples 1 to 3, and the results are shown in Table 5.

Test items Comparative Example 1 Example 1 Example 2 Tensile performance Tensile strength (N/㎟) 2.2 3.1 3.0 Elongation at break (%) 340 437 436 Heat performance Tear strength (N/㎜) 7.6 10.2 10.1 Adhesive performance Bond strength (N/㎟) (untreated) 0.8 0.8 0.8 Bond strength (N/㎟)
(After repeated cold and hot treatment) 0.5 0.7 0.7

Referring to Table 5 above, Examples 1 and 2 containing 50 to 100 parts by weight of the yellow clay/polymer composite had a tensile strength of 3.0 N/mm2 or more, an elongation at break of 436% or more, a tear strength of 10.1 N/mm2 or more, and the bond strength could also be maintained without significant deterioration even after repeated cold and hot treatments. Comparative Example 1 contained about 40 parts by weight of the yellow clay/polymer composite, which tended to improve the properties, but it was confirmed that the effect of improving the properties could be maximized in the content range of 50 to 100 parts by weight, as in Examples 1 and 2. In addition, when a waterproofing film specimen containing 120 parts by weight of the yellow clay/polymer composite relative to 100 parts by weight of EVA was produced to evaluate the characteristics in a range where the content of the yellow clay/polymer composite exceeds 100 parts by weight, the adhesive strength of the waterproofing film was reduced due to excessive addition of yellow clay compared to EVA, causing a lifting phenomenon and preventing the formation of a finish on the film.

Although the present invention has been described through specific matters and limited examples as above, these have been provided only to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and those skilled in the art to which the present invention pertains can make various modifications and variations from this description.

Therefore, the idea of the present invention should not be limited to the described embodiments, and all things that are equivalent or equivalent to the claims described below as well as the claims are included in the scope of the idea of the present invention.

Claims (16)

1st agent containing ethylene vinyl acetate (EVA) and yellow clay/polymer complex; and
2nd agent containing silica, cement, admixture and cellulose;
Including, but not limited to,
The yellow clay/polymer composite is contained in an amount of 50 to 100 parts by weight, the silica sand in an amount of 100 to 300 parts by weight, the cement in an amount of 60 to 80 parts by weight, the admixture in an amount of 0.5 to 1.5 parts by weight, and the cellulose in an amount of 0.2 to 2 parts by weight, relative to 100 parts by weight of the ethylene vinyl acetate (EVA).
The above yellow clay/polymer complex is an eco-friendly waterproofing coating composition characterized by containing yellow clay, polyammonium salt, and polyacrylic acid salt. delete delete In paragraph 1,
An eco-friendly waterproof coating composition characterized in that the polyammonium salt is contained in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of the yellow soil. In paragraph 1,
An eco-friendly waterproofing coating composition, characterized in that the polyammonium salt has a weight average molecular weight of 50,000 to 100,000 g/mol. In paragraph 1,
An eco-friendly waterproof coating composition characterized in that the polyacrylic acid salt is contained in an amount of 1 to 6 parts by weight relative to 100 parts by weight of the yellow soil. In paragraph 1,
An eco-friendly waterproofing coating composition, characterized in that the polyacrylic acid salt has a weight average molecular weight of 5,000 to 10,000 g/mol. In paragraph 1,
An eco-friendly waterproofing coating composition characterized in that the ethylene vinyl acetate (EVA) is included in the emulsion so that the solid content is 45 to 55 wt%. In Article 8,
An eco-friendly waterproofing coating composition characterized in that the emulsion containing the above ethylene vinyl acetate (EVA) has a viscosity of 500 to 1,000 cp (25°C). In paragraph 1,
An eco-friendly waterproof coating composition characterized in that the above silica has a particle size of 0.35 mm or less. delete delete delete delete An eco-friendly waterproofing coating material manufactured from a waterproofing composition according to any one of claims 1 and 4 to 10. An eco-friendly waterproofing coating construction method comprising applying and curing a waterproofing composition according to any one of claims 1 and 4 to 10.