KR101448457B1 - Water-proofing method for concrete structure - Google Patents

Abstract

The present invention relates to a compound waterproofing technique for a concrete structure, and an objective thereof is to provide a compound waterproofing technique for a concrete structure with which a permeable waterproof material, an inorganic waterproof primer, and a polymer-containing top coating material are applied in sequence to the concrete structure so as to minimize a pore of the concrete structure and with which a crystallization reaction of the inorganic waterproof primer and the polymer make waterproof film layer and coating layer tissues denser for waterproof performance improvement. The present invention includes a primary waterproofing step in which the permeable waterproof material is applied to the concrete structure so that a first waterproof layer blocking the pore in the concrete structure is formed; a secondary waterproofing step in which the inorganic waterproof primer (WP) containing sodium acid (2CH3COONa), sodium nitrate (Na2NO3), and magnesium oxide (MgO) is applied after drying of the first waterproof layer so that a waterproof film layer sealing a crack through crystallization reaction inducement is formed; and a tertiary waterproofing step in which an inorganic top coating material (WPM) containing an EVA-based powder polymer and an acrylic powder polymer is applied after curing of the waterproof film for coating layer formation.

Description

Water-proofing method for concrete structure

The present invention relates to a composite waterproofing method for a concrete structure, comprising a step of sequentially applying an impermeable waterproofing material, an inorganic waterproofing primer, and a polymer-containing top coating material to a concrete structure to form a dense waterproof layer, .

Generally, over time, deterioration of various types of concrete structures (cracks, dropouts, cavities, etc.) occurs due to subsidence and external impacts, rapid climate change, weathering, etc., and water leakage occurs. As a result, water, chloride ions This penetrates the inside of the concrete to corrode the reinforcing bars in the concrete, or it expands inside the concrete and causes damage to the concrete.

In order to prevent such leakage phenomenon and to prevent cracks due to watertightness, strength, load and impact of concrete, the effectiveness of waterproofing is emerging.

Conventional concrete structure waterproofing method mainly uses a method of waterproofing by suppressing the permeation of water by forming a waterproof layer by coating an asphalt type or an epoxy resin, a polyurethane resin, an unsaturated polyester resin, .

However, in the conventional waterproofing method, the waterproof layer exhibits a large adhesive strength with the concrete at the beginning of the construction. However, as the time passes, due to the heterogeneous performance of the concrete due to drying shrinkage and thermal expansion of the concrete, There is a problem that the waterproof membrane is broken even when the water is dropped or the concrete sphere is slightly deformed, thereby generating leakage. Particularly, there is a problem in environmental pollution and safety of workers when constructing by asphalt method, and it is difficult to construct on a protruding portion and a corner portion.

In addition, the conventional waterproofing method includes a buried sheet construction method, an exposing sheet construction method, and the like. However, since a separate sheet must be installed in a concrete structure, the work process is complicated and the cost for producing the waterproof sheet is increased, When the waterproof sheet is damaged, the waterproof function of the entire concrete structure is significantly deteriorated.

Hereinafter, the conventional waterproofing method will be briefly described as follows.

Patent No. 0863978 relates to waterproofing using a waterproof sheet. If the waterproof sheet is poorly adhered, there is a risk of breakage, and defects on the joints between the sheets are caused to cause leakage, and a slight irregularity or sand particles There is a problem that the sheet may be broken.

Patent No. 0961004 is developed to supplement the disadvantages of the waterproof sheet as a coating waterproofing method. Organic coating waterproofing material contains a solvent, so there is a potential explosion risk and floating of the coating waterproofing material occurs due to lack of air permeability. The long-term adhesion performance deteriorates due to the difference in thermal expansion coefficient with concrete

Patent No. 0769923 is a waterproofing method using organic and inorganic materials together, which has the merit of complementing the disadvantages of the organic and inorganic systems, but it has disadvantages in that the adhesion is reduced and the durability is remarkably deteriorated because it is a dissimilar material.

Patent No. 0863978 is used as a cement-based inorganic-based waterproofing material. It has the same characteristics as existing concrete structures. It has the advantage of improving durability by imparting mutual permeability to each other. However, it is a two- The mixing ratio may not be uniform, and the two-component type has a problem that the workability is lowered.

Patent Registration No. 10-0542423 (2006.01.04) Patent Registration No. 10-0788021 (December 14, 2007) Patent Registration No. 10-0816518 (2008.03.18) Patent Registration No. 10-0551722 (2006.02.06)

An object of the present invention is to provide a concrete structure in which a penetration type waterproofing material, an inorganic waterproof primer and a polymer-containing top coating material are sequentially applied to a concrete structure to minimize pores of a concrete structure and a crystallization reaction of an inorganic waterproof primer, And to provide a composite waterproofing method of a concrete structure capable of improving the waterproof performance by making the structure of the coating layer dense.

The present invention relates to a waterproofing method comprising: a first waterproofing step of forming a first waterproofing layer by coating a concrete structure with an impermeable waterproofing material to block pores in a concrete structure;

After drying of the first waterproof layer, sodium acid (2CH ₃ COONa), sodium nitrate (Na ₂ NO _3), the concrete by applying an inorganic resistant primer (WP) including magnesium oxide (MgO) water absorption and, the crystals A second waterproofing step of forming a waterproof coating layer by formation;

And a third waterproofing step of forming a coating layer by applying an inorganic top coating material (WPM) including an EVA based powder polymer and an acrylic based powder polymer after curing the waterproof coating film.

As described above, according to the present invention, a concrete waterproofing material (first waterproofing layer) is formed by a permeable waterproofing material and a secondary waterproofing layer (waterproofing And a third waterproof layer (coating layer) is formed by the powder coating polymer-containing top coating material. By forming a composite waterproof layer comprising the first waterproof layer, the waterproof coating layer and the coating layer, do.

The inorganic waterproofing primer of the present invention is made of an environmentally friendly material and has a function to heal the cracks of the concrete structure autonomously by the crystallization induction reaction and can be applied in a wet environment unlike the existing organic waterproofing materials And can maintain the waterproof function for a long period of time.

It offers the present inorganic resistant primer has an excellent adhesion of the invention, the adhesion obtained between the concrete easily and, thereby, as well as to prevent cracks from occurring, the crystallization reaction i.e., sodium acid (2CH ₃ COONa) and sodium nitrate (Na ₂ NO ₃ ), waterproofing is further improved by moisture absorption and crystal formation inside the concrete.

The permeable waterproofing material of the present invention penetrates and hardens into voids in the concrete to reduce the voids in the concrete structure, thereby preventing water penetration from the outside, thereby improving the waterproof effect.

Since the primary waterproof layer (first waterproof layer) is formed by the penetration type waterproof material before the waterproof coating is formed by the inorganic waterproof primer, the waterproof coating film is previously blocked so as not to affect the moisture waterproof coating film generated in the concrete structure, It is possible to prevent the waterproof coating film from being damaged in advance.

The penetration type waterproofing material of the present invention has a function of increasing the surface strength of a concrete structure, thereby protecting the waterproof layer from damage (cracks, dropouts, etc.) occurring on the concrete floor.

In the present invention, since most of the constituents are composed of inorganic materials, a waterproof layer having excellent mechanical properties, water resistance and weather resistance can be formed.

1 is a block diagram showing a waterproofing method according to the present invention.
FIG. 2 is a photograph (microscope photograph) showing a crack sealing process by the inorganic waterproof primer according to the present invention. FIG.
FIG. 3 is an example showing a hydrate formation process by hydration reaction of magnesium hydroxide (MgO)
FIG. 4 is an example showing the rate of expansion according to the content of magnesium oxide (MgO)
Figure 5 is an exemplary view showing the mechanical properties of the top coating material according to the present invention

The present invention primarily relates to an inorganic waterproof primer (WP) for filling voids of a concrete structure by interposing an air permeable waterproofing material and preventing air intrusion from outside by intercepting voids connected to each other to improve waterproof performance and secondarily to induce crystallization of cement (WPM) containing a polymer in the form of a powder to form a dense coating layer. By the complementary action, the waterproof coating layer And the waterproof performance is improved.

That is, FIG. 1 is a block diagram showing a waterproofing method according to the present invention. In the waterproofing method of a concrete structure according to the present invention,

A first waterproofing step of forming a first waterproofing layer by coating a concrete structure with an impermeable waterproofing material to block pores in the concrete structure;

After drying of the first waterproof layer, by applying the sodium acid (2CH ₃ COONa), sodium nitrate (Na ₂ NO _3), magnesium oxide (MgO) inorganic resistant primer (WP) including a sealing cracks by crystallization reaction induced A second waterproofing step of forming a waterproof coating layer;

And a third waterproofing step of forming a coating layer by applying an inorganic top coating material (WPM) including an EVA based powder polymer and an acrylic based powder polymer after curing the waterproof coating film.

The first waterproofing step has a strong resistance to alkali and minimizes the voids in the concrete structure by the permeable waterproofing material excellent in applicability to the concrete structure to form the first waterproofing layer on the concrete surface.

At this time, since the first waterproof layer is formed by the infiltrating waterproofing material, the infiltrating waterproofing material penetrates into the concrete structure to be formed from the inside of the concrete structure to the surface of the concrete structure.

The permeable waterproofing material may include 1.0 to 5.0% by weight of lithium, 15.0 to 30.0% by weight of potassium silicate (K ₂ SiO ₃ ), 4.0 to 15.0% by weight of acrylic silicone emulsion, isomeric octyltriethoxysilanes Wacker, Germany), and 50-70 wt% water.

In the second waterproofing step, an inorganic waterproofing primer made of the same material as the concrete structure is installed to form a waterproof coating layer (secondary waterproofing layer) capable of sealing the crack by inducing excellent adhesion with the concrete structure and a crystallization reaction . At this time, the inorganic waterproofing primer is applied to the concrete structure with an impermeable waterproofing material, left to stand for 3 to 4 hours, and then dried.

The inorganic waterproof primer (WP) comprises 30.0 to 50.0% by weight of cement, 1.0 to 5.0% by weight of an expansion agent (CSA), 1 to 6% by weight of silica fume, 5 to 10% by weight of slag, 1.0 to 5.0% by weight of magnesium oxide (MgO) sodium acid (2CH ₃ COONa) 0.1~1.0% by weight, and sodium nitrate (Na ₂ NO ₃₎ 0.1~1.0% by weight, 0.1 to 0.8% by weight of flow agents, defoamers 0.01~0.7%, 5 luxury 10.0~20.0 wt.%, 7, 10.0 to 30.0 wt%, and lightweight aggregate 1.0 to 5.0 wt%.

The slag provides a function of preventing cracks, and the product produced by the pozzolan reaction of the slag reacts with Ca (OH) ₂ , which is a hydrate of cement, to continuously fill the pores, On the contrary, since the waterproof property is superior to the existing method, migration of deteriorated substances such as water and steam penetrating from the outside is suppressed.

The usual pozzolanic materials are themselves hydrated and cured by adding Ca (OH) ₂ , alkali, etc. without hydration, and the hydration products include CSH, C ₃ ACaCO _{3 12} H ₂ O (C ₄ AH ₁₃ ), C ₂ ASH ₈ , and in the long run produces hydrogarnet.

Generated hydrate of pozzolanic material is almost the same as that of Portland cement, but the Ca / Si ratio of CSH produced is lower than that of Portland cement. SiO ₂ and Al ₂ O ₃ in the pozzolanic material increase as the amount of supplied alkali is increased, the amount of hydrate is increased, and the amount of calcium to be produced is increased.

In addition, when hydration is active, the production of Ca (OH) ₂ is increased, and when the hydration rate is increased, the consumption rate of Ca (OH) ₂ is also increased.

In general, the pozzolanic material has potential hydraulic properties immediately after the reaction but delays the initial hydration reaction as crystals of alumina silicate form.

The expansion material (CSA) generates ettringite to reduce cracks due to drying shrinkage by imparting an appropriate expansion property at the initial stage of curing, and the needle-like microcrystals fill the voids of the waterproofing material, Make it compact.

The sodium nitrate (Na ₂ NO ₃ ) continuously reacts with the hydrate generated by the hydration of the cement to fill the voids, thereby tightening the structure. That is, sodium nitrate (Na ₂ NO ₃ ) produces Ca (OH) NO ₃ , minimizing the voids present inside the inorganic waterproofing primer, thereby preventing cement hydrates from interfering with each other due to temperature, shrinkage and corrosion do.

The Ca (OH) NO ₃ is a product resulting from the reaction of cement hydrate Ca (OH) ₂ with sodium nitrate (Na ₂ NO ₃ ) which is a chemical additive. Ca (OH) NO ₃ , And serves to fill voids formed in the cement paste while continuously crystallizing. Particularly, it penetrates into cracks caused by hydration heat, drying shrinkage and corrosion, and functions to fill the cracks.

As described above, when 0.1 to 1.0 wt% of sodium nitrate (Na ₂ NO ₃ ) is mixed, it forms crystals by reacting with cement hydrate, filling the voids in the mortar and making the structure of the waterproof coating film dense.

The sodium acid (2CH ₃ COONa) is for improving the water resistance, while quickly absorbing the moisture in the concrete inside thereby rapidly produce crystals than conventional sodium-based (sodium tartarate, sodium citrate, sodium carbonate).

The crystals thus formed continuously fill the pores of the concrete, thereby reducing the pores of the concrete and minimizing the amount of water absorbed into the concrete.

FIG. 2 is a photograph (microscope photograph) showing a crack sealing process by an inorganic waterproof primer according to the present invention. It is an inorganic waterproofing material containing sodium nitrate (Na ₂ NO ₃ ) and sodium acid (2CH ₃ COONa) It can be seen that the cracks are sealed by Ca (OH) NO ₃ and 2CH ₃ COONa over time even if cracks occur after priming.

The magnesium oxide (MgO) stably forms Mg (OH) ₂ in the cement paste to fill voids formed by cracks or the like. That is, FIG. 3 illustrates a hydrate formation process by a magnesium oxide (MgO) hydration reaction. The magnesium oxide (MgO) seeps into voids or cracks while increasing internal pressure, The crystals will continue to be produced until that time.

Generally, CSA (Calcium Sulfoaluminate) expanding material, which is widely used, tends to deteriorate at a high temperature (700 ° C.), but magnesium oxide (MgO) has a small amount of water required for hydration reaction, has a very stable hydration reaction, About 1,000 days), so that the effect lasts for a long time.

FIG. 4 shows expansion ratios according to magnesium oxide (MgO) contents, which are continuously inflated for a long period of time to fill voids in concrete structures and to compensate shrinkage of waterproof coating films.

The magnesium oxide (MgO) may be magnesium oxide (MgO) contained in dolomite, that is, magnesium oxide obtained by crushing dolomite, or magnesium oxide (MgO) calcined at a temperature higher than about 1200 ° C In the case of magnesium oxide (MgO), the degree of swelling in the initial curing is small and the reaction by the hydration reaction is long lasting.

The fluidizing agent, the antifoaming agent and the lightweight aggregate are well known, and a description thereof will be omitted.

The inorganic waterproof primer of the present invention as described above is simple in construction, excellent in adhesive force, and excellent in preventing moisture penetration. In order to induce the initial expansion, calcium sulphur aluminate was added to prevent cracks from occurring due to initial drying shrinkage, to induce pozzolanic reaction to control the rate of hydrate formation, to incorporate magnesium oxide (MgO) By controlling long-term contraction and expansion, cracks and dropouts are prevented. In addition, the inorganic waterproof primer contains sodium nitrate (Na ₂ NO ₃ ), sodium acid (2CH ₃ COONa) and magnesium oxide (MgO), and even if cracks are generated, crystals are formed over time, You can heal naturally.

In the third waterproofing step, an inorganic top coating material (WPM) containing a powder polymer is applied on the cured waterproof coating layer to form a coating layer.

The top coating material (WPM) is an inorganic waterproofing material containing a powdery polymer in which an acrylic powder and an EVA-based powder polymer are mixed in an inorganic mixture. When an inorganic mixture is firstly reacted to form a waterproof layer, The hydration layer formed by the inorganic mixture becomes more dense by allowing the powder polymer to penetrate into the voids existing between the hydrate existing in the reaction mixture and the hydrate formed during the reaction.

The top coating material (WPM) may contain 35.0 to 53.0 wt% of cement, 1.0 to 5.0 wt% of expanding material (CSA), 1.0 to 7.0 wt% of silica fume, 5.0 to 23.0 wt% of slag, 1.0 to 10.0 wt% of EVA- 2.0 to 5.0% by weight of an acrylic powder polymer, 0.1 to 0.8% by weight of a fluidizing agent, 0.01 to 0.7% by weight of an antifoaming agent, 35.0 to 50.0% by weight of a No. 7 agent, and 1.0 to 10.0% by weight of a lightweight aggregate.

Since the slag and the expansion material are described in the inorganic waterproof primer, a description thereof will be omitted. Further, since the fluidizing agent, antifoaming agent and lightweight aggregate are well known, a description thereof will be omitted.

The ethylene vinyl acetate (EVA) is a monomer initiator mixed with a vinyl acetate monomer and an ethylene monomer, and is used as a starting material for inducing a chemical reaction such as sodium bicarbonate (Ammonium persulfate) , Foaming agents, and the like. When this is mixed with the mortar and used, the spherical EVA forms a film in the mortar to exhibit a waterproof effect.

The EVA-based powder polymer has the physical properties shown in Table 1 below, and a German BASF product (DA1130) can be used.

[Table 1]

The acryl-based powder polymer is prepared by mixing styrene-methyl methacrylate and methacrylate, and further adding an admixture such as an accelerator. When this is mixed with mortar, the voids generated in the mortar are taken in, It is connected and exhibits the strength enhancement effect.

The acrylic polymer powder has physical properties shown in Table 2 below, and a German BASF product (S631P) can be used.

[Table 2]

Thus, the top coating material (WPM) plays a role of significantly improving the waterproof performance of the waterproof coating film (waterproof coating film layer) formed by the inorganic waterproof primer (WP).

5 shows the mechanical properties of the top coating material according to the present invention. Since the powdered polymer and the cement have chemically different properties, the polymer and the cement each bond to each other after the reaction. Therefore, Bonding is dominated.

That is, when the top coating material is applied, the acrylic powder and the EVA-based powder polymer are absorbed on the surface of the cement particles that have not hydrated with the cement gel, thereby enclosing the particles and increasing the strength of the top coating material The thin film formed by the polymer penetrates into the hydrate during hydration of the cement to form a monolithic network together with the cement hydrate, thereby preventing cracking and improving tensile strength and chemical resistance.

However, excessive generation of air due to the acrylic powder and the EVA-based powder polymer causes the strength to be lowered, and therefore should be added within an appropriate range. That is, the acrylic powder and the EVA powder polymer fill the pores at the end of the cement hydration reaction and reduce the probability of occurrence of the room cracks in the CSH crystal, but they form a film continuously during the drying to interfere with the formation of crystals. Should be added.

As described above, the composite waterproofing method of the concrete structure according to the present invention is characterized in that the pores of the concrete structure are blocked by the penetration type waterproofing material and the waterproof coating layer made of inorganic material is formed by the crystallization reaction with the inorganic waterproof primer (WP) , And finally a dense coating layer is formed by the top coating material so that the three waterproof layers complement each other to improve the overall waterproof performance.

Hereinafter, the present invention will be described in detail with reference to the following examples.

Example 1

Water, lithium, potassium silicate (RSChem), silane (isomeric octyltriethoxysilanes, Germany Wacker), acrylic silicone emulsion (APEC SA, AP-4700) were mixed at a mixing ratio shown in Table 3 The water resistance of each specimen was tested by applying KS F 2451 (Cement waterproofing agent test method for construction) method to each test specimen. The results are shown in [Table 4] and [Table 5].

At this time, the test specimen consisted of 100 wt% of Portland cement which passed the KS L 5201 Portland cement specification. Test specimen 1 was a test specimen that did not apply the penetration type waterproofing material. Test specimen 2 was a commercially available penetration type specimen (Sika 101 PM product), and specimen 3 is a commercially available impervious waterproofing material (made in the UK).

[Table 3]

[Table 4]

[Table 5]

As can be seen from Table 4, in the case of the test piece coated with the water permeable waterproofing material of the present invention, the water absorption amount was reduced from at least 18% to at most 56% as compared with the test body (control) not coated with the water permeable waterproofing agent. Particularly, in the case of the test pieces 6 and 7 including lithium, the amount of water absorption is decreased as compared with the test piece 5 that does not contain lithium, so that it can be seen that the amount of water absorption is also changed by lithium. Particularly, as shown in [Table 4] and [Table 5], in the case of the test piece 7 coated with the acrylic silicone emulsion and the silane-containing impermeable waterproofing material, the water absorption amount was remarkably reduced compared with the control group or the currently used waterproofing material .

Example 2

An inorganic waterproof primer (WP) was prepared according to the mixing ratio shown in Table 6, and the mechanical properties of the waterproofing agent were tested. The results are shown in Table 7.

At this time, mixing of the samples was carried out using a mortar mixer specified in KS L 5109 (mechanical mixing method of hydraulic cement paste and mortar), and the mixed water was determined in accordance with KS L 5102 (Leading Test of Hydraulic Cement) Respectively.

[Table 6]

[Table 7]

[Table 7] shows that the waterproofing properties of the primer were tested according to KS F 4930. As a result, there was almost no difference in the compressive strength, flexural strength and adhesion strength according to the kinds of auxiliary materials and the horns, And the water absorption coefficient ratio and the permeability ratio change depending on the mixing amount.

That is, it can be seen that sodium nitrate (Na ₂ NO ₃ ) and sodium acid (2CH ₃ COONa) decrease the amount of water permeating into the primer (WP), and magnesium oxide (MgO) also enhances the water resistance of the primer have.

Therefore, it can be seen that when water is mixed with sodium nitrate (Na ₂ NO ₃ ), sodium acid (2CH ₃ COONa) and magnesium oxide (MgO) in an appropriate range, the water resistance of the inorganic waterproof primer is improved.

Example 3

A top coating agent was prepared according to the mixing ratio shown in Table 8, and the mechanical properties of the waterproofing agent were tested. The results are shown in Table 8.

At this time, mixing of the samples was carried out using a mortar mixer specified in KS L 5109 (mechanical mixing method of hydraulic cement paste and mortar), and the mixed water was determined in accordance with KS L 5102 (Leading Test of Hydraulic Cement) Respectively.

[Table 8]

[Table 9]

Table 9 shows the water absorption coefficient ratios and permeability ratios of the top coating material according to the mixing amounts of the acrylic powder polymer and the EVA base powder polymer. The compressive strength of the top coating material containing no polymer was higher than that of the polymer mixture The strength is remarkably excellent. However, the waterproof performance is significantly lower than that in the case of incorporating the polymer. When the polymer is incorporated, the water absorption coefficient ratio and the water permeability ratio are lowered as the amount of the polymer is increased. As a result, Is mixed at a proper blending ratio, the waterproof performance is remarkably improved.

Example 4

The inorganic waterproofing primer was applied to a thickness of 0.5 mm and then cured for 24 hours. The top coating material was applied to the surface of the waterproof primer in a thickness of 0.5 mm and cured for 28 days. The waterproof performance was tested and the results are shown in Table 10.

At this time, the test piece 16 is the top coating material of the test piece 12, the test piece 17 is the inorganic waterproof primer of the test piece 9, the top coating material of the test piece 13, the test piece 18 is the inorganic waterproof primer of the test piece 10, Coating material, test piece 18 is the inorganic waterproof primer of test piece 11, and top coat material of test piece 15, respectively.

[Table 10]

As shown in Table 10, it can be seen that the water absorption coefficient ratio and the permeability ratio are significantly lowered when the primer and the top coating material are used together, compared with the test material prepared by separately applying the inorganic waterproof primer and the top coating material. In addition, when the coating layer is formed by the top coating material on the waterproof coating layer formed by the inorganic waterproof primer, it is understood that even if the performance of the waterproof coating layer is lowered, the coating layer provides an excellent waterproof effect.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

Claims (4)

A first waterproofing step of forming a first waterproofing layer by coating a concrete structure with an impermeable waterproofing material to block pores in the concrete structure;
After drying of the first waterproof layer, by applying the sodium acid (2CH ₃ COONa), sodium nitrate (Na ₂ NO _3), magnesium oxide (MgO) inorganic resistant primer (WP) including a sealing cracks by crystallization reaction induced A second waterproofing step of forming a waterproof coating layer;
And a third waterproofing step of curing the waterproof coating film and then coating the inorganic top coating material (WPM) including the EVA based powder polymer and the acrylic polymer powder to form a coating layer.
The method of claim 1,
The permeable waterproofing material may include 1.0 to 5.0% by weight of lithium, 15.0 to 30.0% by weight of potassium silicate (K ₂ SiO ₃ ), 4.0 to 15.0% by weight of acrylic silicone emulsion, isomeric octyltriethoxysilanes ) 1.0 to 10.0% by weight, and water (water) 50 to 70% by weight.
The method of claim 1,
The inorganic waterproof primer (WP) comprises 30.0 to 50.0% by weight of cement, 1.0 to 5.0% by weight of an expansion agent (CSA), 1 to 6% by weight of silica fume, 5 to 10% by weight of slag, 1.0 to 5.0% by weight of magnesium oxide (MgO) sodium acid (2CH ₃ COONa) 0.1~1.0% by weight, and sodium nitrate (Na ₂ NO ₃₎ 0.1~1.0% by weight, 0.1 to 0.8% by weight of flow agents, defoamers 0.01~0.7%, 5 luxury 10.0~20.0 wt.%, 7, 10.0 to 30.0 wt%, and lightweight aggregate of 1.0 to 5.0 wt%.
The method of claim 1,
The top coating material (WPM) comprises 35.0 to 53.0 wt% of cement, 1.0 to 5.0 wt% of expanding material (CSA), 1.0 to 7.0 wt% of silica fume, 5.0 to 23.0 wt% of slag, 1.0 to 10.0 wt% of EVA- A composite waterproofing method of a concrete structure comprising 2.0 to 5.0% by weight of a polymer, 0.1 to 0.8% by weight of a fluidizing agent, 0.01 to 0.7% by weight of an antifoaming agent, 35.0 to 50.0% .

Images