KR102222895B1 - Floor finishing method by concrete polishing using concrete permeable surface strengthening agent and penetration prevention agent - Google Patents

Abstract

The present invention relates to a concrete polishing floor finishing method using a concrete permeable surface strengthening and penetration contamination prevention agent with excellent durability, which simultaneously generates insoluble silicate metal hydrate and silicic acid by reacting with free metal ions in concrete, strengthens a concrete surface by using the concrete permeable surface strengthening and penetration contamination prevention agent which can self-heal pores of the concrete, and then can prevent penetration damage caused by contaminants and water by polishing the surface after strengthening. The concrete polishing floor finishing method using a concrete permeable surface strengthening and penetration contamination prevention agent comprises: (a) a surface treatment step of grinding a surface layer of a concrete floor to a desired level of roughness or pattern; (b) a waterproofing and strengthening treatment step of penetrating an alkali metal liquid nanocomposite silicate-based penetration waterproofing agent to the concrete floor after the surface treatment step, wherein the alkali metal liquid nanocomposite silicate-based penetration waterproofing agent contains a nanocomposite silicate sol composed of sodium silicate, lithium silicate and potassium silicate, silane-based compounds, and an additive including silicon carbide and metal oxide; and (c) a polishing treatment step of grinding the surface layer of the concrete floor.

Description

Floor finishing method by concrete polishing using concrete permeable surface strengthening agent and penetration prevention agent}

The present invention relates to a concrete polishing floor finishing method using a concrete permeable surface reinforcement and an anti-pollution agent, and more specifically, reacts with free metal ions in concrete to simultaneously generate insoluble silicate metal hydrate and silicic acid, and porosity of concrete. The concrete surface can be self-healing, and the concrete surface can be reinforced using a permeable anti-pollution agent, and the surface can be polished after the reinforcement to prevent permeable damage by contaminants and water, and has excellent durability. It relates to a concrete polishing floor finishing method using a permeable surface reinforcement and an anti-pollution agent.

Concrete is composed of aggregates such as water, cement, sand, and gravel, and is used to form building structures such as buildings, bridges, and tunnels by using a hydration reaction hardened by the reaction of cement and water.

Concrete structures are divided into a basement layer buried in the ground and a surface layer exposed to air. The basement layer is always in contact with moisture, and durability may decrease as contraction and expansion are repeated according to temperature changes. Deterioration of the durability of concrete is particularly affected by moisture, and water acts as a medium to deteriorate concrete, and dissolved sulfate, nitrate, carbonate, acid rain, etc. can accelerate damage to the concrete structure.

In order to prevent such moisture damage, various waterproofing materials have been researched and used, and a lot of research has been conducted on the development of eco-friendly waterproofing materials that do not emit heavy metals or volatile organic compounds along with the global environmental protection trend today. Conventional organic waterproofing materials are deteriorated by the release of volatile organic compounds during curing and various environmental factors after curing, especially acid rain, nitrogen oxides, sulfur oxides, soot, and chlorine ions due to proportional salts of seawater. Due to the yellowing phenomenon, cracking, and swelling caused by ultraviolet rays, the service life is rapidly reduced, making it difficult to secure durability.

In particular, when concrete is exposed to the air, calcium hydroxide [Ca(OH) ₂ ], which is a _{cement hydrate, reacts with carbon dioxide (CO 2} ) in the air to produce carbonates (calcium carbonate, calcium hydrogen carbonate). The deterioration of concrete proceeds from the surface to the inside, and as the deterioration proceeds, the pH, which is the alkalinity of the concrete (PH 12.5 to 13), is neutralized to about 8.5 to 10. What was formed is destroyed under the influence of this, accelerating the corrosion of the reinforcing bar, and when the reinforcing bar is corroded, the volume expands.The volume expansion of the reinforcing bar that was confined in the concrete accelerates the stress of the concrete structure, causing cracking and attaching the reinforcing bar. The physical performance of the reinforced concrete structure is degraded, such as the decrease in strength, the peeling of the clad concrete, and the decrease in the strength of the reinforcing bar, resulting in a crisis of the entire structure.

In addition, it is inevitable that voids are formed inside the concrete during the hydration reaction, which is the process of curing concrete, and these internal voids become a path for moisture to penetrate into the concrete structure. When moisture penetrates through the internal voids, microcracks can occur, which can degrade the waterproof performance of concrete and at the same time corrode reinforcing bars, etc., and significantly affect the life of the concrete structure.

Methods of imparting waterproofness to concrete include forming a waterproofing membrane on the concrete surface, infiltrating the waterproofing agent to a certain depth, and preventing voids and cracks inside the concrete. The method of imparting is called concrete waterproofing. Spherical waterproofing is implemented by a method of reducing the amount of water mixed to suppress the occurrence of internal pores, a method of filling the inner pores with fine particles by applying a permeable waterproofing material, and a method of preventing the internal penetration of moisture by mixing a water-repellent material. .

These permeable waterproofing agents are mixed with concrete surface strengthening agents or are used sequentially to strengthen the floor surface of buildings. The reinforced floor is polished and finished through a polishing process, and this is called a concrete polishing floor finish. However, such a floor finishing method has the inconvenience of using a surface reinforcing agent and a permeable waterproofing agent separately, and when a surface reinforcing agent and a permeable waterproofing agent are mixed, the strength or waterproofing properties may be deteriorated. There is a need for a concrete polishing floor finishing method.

(0001) Korean Patent Registration No. 10-1579804 (0002) Korean Patent Application Publication No. 10-2009-0100885

In order to solve the above problem, the present invention reacts with free metal ions in concrete to simultaneously generate insoluble silicate metal hydrate and silicic acid, and strengthens and penetrates concrete permeable surface capable of self-healing (self-repair) pores of concrete. By reinforcing the concrete surface with a pollution inhibitor and polishing the surface after reinforcement, it is possible to prevent penetration damage due to contaminants and water, and a concrete polishing floor finishing method using a concrete penetration surface reinforcement and penetration pollution prevention agent with excellent durability. I want to provide.

In order to solve the above-described problem, the present invention includes (a) a surface treatment step of grinding a surface layer of a concrete floor to produce a desired level of roughness or pattern; (b) nanocomposite silicate sol composed of sodium silicate, lithium silicate, and potassium silicate after the surface treatment step; Silane-based compounds; And a waterproofing and reinforcing treatment step of infiltrating an alkali metal liquid nanocomposite silicate-based permeable waterproofing agent including an additive including silicon carbide and metal oxide into the concrete floor. And (c) polishing the surface layer of the concrete floor. It provides a concrete polishing floor finishing method using a concrete permeable surface reinforcement and an anti-pollution agent.

In one embodiment, it may be dried for 11 to 13 hours after step (b).

In one embodiment, it may further include a step of curing by applying a colorant after the step (a).

In one embodiment, after the step of applying and curing the colorant, a grinding step of polishing the surface layer may be included.

In one embodiment, the nanocomposite silicate sol may include 40 to 80 parts by weight of sodium silicate, 10 to 30 parts by weight of lithium silicate, and 30 to 50 parts by weight of potassium silicate.

In one embodiment, the nanocomposite silicate sol has a silicon dioxide solid content of 30 to 35 parts by weight, a metal oxide content of 25 to 30 parts by weight consisting of sodium oxide, lithium oxide and potassium oxide, and a pH of 3 to 6 days. I can.

In one embodiment, the nanocomposite silicate sol may be one in which an aqueous colloidal nanocomposite silicate composed of sodium silicate, lithium silicate, and potassium silicate is dispersed in an alcohol-based solvent.

In one embodiment, the silane-based compound may include organo alkoxysilane or organo aminosilane.

In one embodiment, the organo alkoxysilane is tetramethoxysilane, methyltrimethoxysilane, trimethylmethoxysilane, dimethyldimethoxysilane, triethylmethoxysilane, ethyltrimethoxysilane, diethyldimethoxysilane In any one of, the organo aminosilane is N-2-(aminoethyl)-3-aminopropyl-trimethoxysilane, aminoethylaminopropyltriethoxysilane, N-2-(benzylamino)-ethyl- It may be any one of 3-aminopropyl-trimethoxysilane and N-2-(vinylbenzylamino)-ethyl-3-aminopropyl-trimethoxysilane.

In one embodiment, 5 to 15 parts by weight of aluminum oxide, 5 to 10 parts by weight of calcium carbonate, and 1 to 5 parts by weight of titanium dioxide may further be included based on 100 parts by weight of the nanocomposite silicate sol.

As the concrete polishing floor finishing method using the concrete penetration surface reinforcement and penetration pollution inhibitor according to the present invention is manufactured by mixing various kinds of alkali metal-silicate compounds, it reacts with free metal ions in the concrete and thus insoluble silicate metal hydrate and It is gelled by simultaneously forming silicic acid, which fills the voids and deteriorated pores in the concrete to improve waterproofness and strength, and by using a surface reinforcing agent that can maintain the pH of the concrete, antifouling agents and surface reinforcing agents are used. Unlike the existing floor finishing method, which has to be applied twice, it is possible to achieve the same effect with only one chemical treatment, thus reducing construction time and construction cost at the same time.

Hereinafter, a preferred embodiment of the present invention will be described in detail. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted. Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

The present invention is intended to illustrate specific embodiments and to be described in detail in the detailed description, since various transformations may be applied and various embodiments may be provided. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all conversions, equivalents, or substitutes included in the spirit and scope of the present invention.

The technology disclosed in the present specification is not limited to the embodiments described herein and may be embodied in other forms. However, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the technical idea of the present technology may be sufficiently transmitted to those skilled in the art. In the drawings, in order to clearly express the constituent elements of each device, the size of the constituent elements, such as width or thickness, is slightly enlarged. Overall, it was described at the viewer's point of view when describing the drawings, and if one element is mentioned as being positioned on another element, this means that the one element is positioned directly on another element or that an additional element may be interposed between the elements. Includes. In addition, those of ordinary skill in the relevant field will be able to implement the spirit of the present invention in various other forms without departing from the technical spirit of the present invention. In addition, the same reference numerals in the plurality of drawings refer to substantially the same elements.

The terms used in the present invention are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present invention, terms such as include or have are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination of them described in the specification, and one or more other features, numbers, and steps. It is to be understood that it does not preclude the possibility of the presence or addition of, operations, components, parts, or combinations thereof.

Meanwhile, the meaning of the terms described in the present specification should be understood as follows. Terms such as “first” or “second” are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

In addition, expressions in the singular should be understood as including plural expressions unless they clearly mean differently in the context, and terms such as “include” or “have” are described features, numbers, steps, actions, components, and parts. It is to be understood that it is intended to designate the existence of a combination of these and not to preclude the possibility of the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof. In addition, in performing the method or the manufacturing method, each of the processes constituting the method may occur differently from the specified order unless a specific order is clearly stated in the context. That is, each of the processes may occur in the same order as the specified order, may be performed substantially simultaneously, or may be performed in the reverse order.

The present invention (a) a surface treatment step of grinding the surface layer of the concrete floor so that the desired level of roughness or pattern comes out; (b) nanocomposite silicate sol composed of sodium silicate, lithium silicate, and potassium silicate after the surface treatment step; Silane-based compounds; And a waterproofing and reinforcing treatment step of infiltrating an alkali metal liquid nanocomposite silicate-based permeable waterproofing agent including an additive including silicon carbide and metal oxide into the concrete floor. And (c) polishing the surface layer of the concrete floor. It relates to a concrete polishing floor finishing method using a concrete permeable surface reinforcement and an anti-pollution agent.

The step (a) is a surface treatment step in which the surface layer of the concrete floor is ground to obtain a desired level of roughness or pattern, and chemical surface treatment or physical surface treatment may be performed.

The physical surface treatment method is to remove foreign substances or latencies (a white thin film formed on the concrete surface after hardening due to the floating of fine substances on the surface during curing of concrete) and protruding gravel on the surface of the concrete. Conducted to grind. When performing such physical surface treatment, the shape and state of the concrete floor are arranged, so that the bonding strength of the concrete floor and the alkali metal liquid nanocomposite silicate-based permeable waterproofing agent to be described later can be increased.

In addition, in the case of concrete floors finished with other finishing materials, workers can remove the existing finishing materials and perform physical surface treatment after repairing severely dents or cracks, and in the case of newly constructed concrete floors, the surface immediately after construction. Treatment can be carried out.

The method of performing the physical surface treatment is not particularly limited, but it is preferably performed using a metal grinder equipped with a metal diamond wheel. When the surface treatment is performed using the metal grinder, it is easy to grind the gravel protruding from the concrete floor, and the grinding speed is fast, so that a lot of time is not spent on the surface treatment, so that the overall polishing efficiency can be improved.

This physical surface treatment may be performed multiple times by adjusting the mesh size of the metal diamond wheel according to the condition (roughness) of the concrete floor. Specifically, depending on the condition of the concrete floor, surface treatment may be performed multiple times by applying a metal diamond wheel of #20, #50, or #100, respectively. In this way, when the surface treatment is performed in stages according to the condition of the concrete floor, it is possible to more efficiently provide the floor in the state desired by the consumer while saving time and cost.

In addition, in addition to the physical surface treatment method described above, the surface treatment may be performed using a chemical method. Chemical surface treatment is performed through a method of corroding the surface of the concrete using an acid or a base, and the acid or base used at this time can chemically polish the surface of the concrete and remove foreign substances attached to the surface at the same time. .

In addition, it is also possible to repeatedly perform the chemical surface treatment and physical surface treatment as described above. In the case of chemical surface treatment, the surface of concrete can be polished through chemical etching, but damage to the concrete may occur due to chemical substances. In the case of physical surface treatment, the damage to the concrete is less than that of the chemical surface treatment, but many It requires strength and effort. Therefore, in order to compensate for these, the concrete surface is weakened through chemical etching, and then the part where the chemical change has occurred is removed by using a method of physically polishing the concrete, so that the concrete can be polished with little effort and energy.

After the surface treatment is completed as described above, the step of curing by applying a colorant may be further included. Concrete that has been surface-treated is not yet applied with a surface strengthening agent, so it has porosity and hygroscopicity. Therefore, when applying a colorant, particularly a water-soluble colorant, to the surface of such concrete, it is possible to apply a desired color. In particular, when the colorant is applied with a certain pattern, a desired pattern can be formed on the surface of the concrete. As an example, in the case of applying a colorant in the shape of a parking line on the surface of concrete, the colorant is located under the surface strengthening agent, so it is possible to prevent damage to the parking line due to the movement of the vehicle, and to paint the parking line on the surface of the floor. Compared to that, it is possible to form parking lines with high durability.

The water-soluble pigment used at this time may be a composition in which a colored pigment such as zinc oxide, titanium dioxide, aluminum oxide, iron oxide, cobalt oxide, or carbon black is dispersed in a resin varnish, and is simply a water-soluble pigment including an organic pigment. I can. The water-soluble pigment is mixed with alcohol and water, which is one selected from ethanol, methanol, propanol, and butanol, and applied to the surface layer of the concrete floor after the surface treatment has been completed, and the water-soluble pigment penetrates and dyes the surface layer of the concrete floor.

In the above, when 40 to 60% by weight of a water-soluble pigment is mixed with 10 to 30% by weight of the alcohol and 10 to 50% by weight of water and applied to the surface layer of the concrete floor, the color sharpness is improved and the color aggregation is small, so that the concrete floor It is preferable in terms of being able to penetrate evenly into the surface.

After applying colorant to the concrete floor. It is preferable to dry for 3 to 5 hours before allowing it to penetrate.

In addition, if necessary, after the step of curing by applying the colorant, a grinding step of polishing the surface layer may be performed. After the application of the colorant as described above, foreign substances on the surface of the concrete may adhere, and the colorant that cannot be penetrated may aggregate on the surface to form a film. Accordingly, a grinding step of polishing the surface may be performed in order to remove such foreign matter and colorant coating. At this time, in the grinding step, it is preferable to perform physical grinding similar to the surface treatment step, and it is preferable to use the same metal grinder, but to prevent further damage to the concrete by applying a resin pad of #200 to #500.

The step (b) is a step of applying a permeable waterproofing agent that can simultaneously serve as a curing agent and an antifouling agent on the bottom surface of the concrete on which the surface treatment has been completed, comprising: a nanocomposite silicate sol consisting of sodium silicate, lithium silicate, and potassium silicate; Silane-based compounds; And an alkali metal liquid nanocomposite silicate-based permeable waterproofing agent including an additive including silicon carbide and metal oxide to penetrate into the concrete floor.

The nanocomposite silicate sol may be composed of sodium silicate, lithium silicate, and potassium silicate. In the case of a waterproofing solution using a conventional silicate sol, a two-component silicate containing only sodium silicate or lithium silicate or potassium silicate in sodium silicate was used. In the case of the three-component silicate, the content of sodium silicate may be lowered in order to see the effects of lithium silicate and potassium silicate, excluding sodium silicate, which are the main components, and accordingly, the price increased and the performance decreased. However, with only sodium silicate, it is difficult to cope with concrete leakage in various ways, and it is more preferable to supply various metal ions for pH recovery in concrete. Therefore, in the present invention, by combining sodium silicate, lithium silicate, and potassium silicate in an optimal component ratio, side effects due to reduction of sodium silicate can be minimized, and at the same time, it is possible to cope with various leaks, and a nanocomposite silicate waterproofing agent optimized for recovery of concrete pH. to provide. At this time, the sodium silicate, lithium silicate and potassium silicate preferably include 40 to 80 parts by weight of sodium silicate, 10 to 30 parts by weight of lithium silicate, and 30 to 50 parts by weight of potassium silicate. Within the above range, the nanocomposite silicate-based waterproofing agent of the present invention may have an optimal effect, and if there are components included below the above range, the nanocomposite silicate-based waterproofing agent may not exhibit the desired waterproofing power or concrete water holding capacity. In addition, if there are components exceeding the above range, the price may increase, and metal salts may precipitate during concrete repair, resulting in a decrease in waterproofing power.

The sodium silicate, lithium silicate, and potassium silicate are included in the nanocomposite silicate waterproofing agent, and when the nanocomposite silicate waterproofing agent is used, it reacts with calcium hydroxide present in concrete to form calcium silicate gel and metal hydroxide, at which time the chemical mechanism of hydrate formation Is the same as in Chemical Formula 1 below.

[Formula 1]

Na ₂ SiO ₃ nH ₂ O + Ca(OH) ₂ + nH ₂ O -> CaSiO nH ₂ O +2NaOH

Li ₂ SiO ₃ nH ₂ O + Ca(OH) ₂ + nH ₂ O -> CaSiO nH ₂ O +2LiOH

K ₂ SiO ₃ nH ₂ O + Ca(OH) ₂ + nH ₂ O -> CaSiO nH ₂ O +2KOH

Calcium hydroxide present in concrete is generated by the hydration reaction of cement and is derived from calcium carbonate in limestone among cement raw materials, and plays a role of preventing corrosion of reinforcing bars included in concrete by maintaining the pH of concrete at 11 or higher. However, the calcium hydroxide is combined with carbon dioxide in the air to form calcium carbonate, which decreases the pH of the concrete (carbonation of the concrete) and increases the voids, thereby reducing the strength of the concrete.

Sodium silicate, lithium silicate, and potassium silicate of the present invention are combined with calcium hydroxide to form calcium silicate gel, as shown in Chemical Formula 1, and the calcium silicate gel can fill the voids of concrete. In addition, secondary metal hydroxides (NaOH, LiOH, KOH) can prevent corrosion of reinforcing bars by maintaining and restoring pH in concrete (alkali maintenance, recovery).

In Formula 1, water (nH ₂ O) may be water included in the nanocomposite silicate waterproofing agent or water that has penetrated from the outside. The nano-composite silicate-based waterproofing agent is mixed with water or alcohol-based solvents for the convenience of construction. In particular, the water contained at this time acts as a moving medium of the waterproofing agent, so that the waterproofing agent can easily penetrate into the concrete. Therefore, when the nanocomposite silicate waterproofing agent is applied to the surface of a building, the reaction of Formula 1 can be performed using water used as the solvent, thereby filling the previously generated pores and recovering the pH at the same time. . In addition, since the nano-composite silicate waterproofing agent is generally applied in excess to maintain waterproofness, the waterproofing agent penetrates into the concrete and exists as an unreacted material. Concrete self-repair and pH maintenance and recovery (alkali maintenance, recovery) are possible.

[Formula 2]

2Na ₂ SiO ₃ + nH ₂ O -> Na ₂ SiO ₂ O ₅ nH ₂ O + 2NaOH

Na ₂ SiO ₂ O ₅ nH ₂ O -> Na ₂ SiO ₃ nH ₂ O + SiO H ₂ O

Looking at this in detail, as shown in Chemical Formula 2, sodium silicate (Na ₂ SiO ₃ ) contained in the waterproofing agent is combined with water and hydrolyzed to form Na ₂ SiO ₂ O ₅ ·nH ₂ O, while simultaneously forming sodium hydroxide. Occurs. At this time, the sodium hydroxide may act as a strong base to restore the pH of the concrete. In addition, Na ₂ SiO ₂ O ₅ ·nH ₂ O is converted to sodium silicate through natural decomposition, forming silicon oxide. Silicon oxide generated from the Na ₂ SiO ₂ O ₅ ·nH ₂ O itself is a main component of sand or glass, and it is a solid, so it can not only fill the voids of concrete, but also react with calcium ions or calcium hydroxide present in the concrete. By generating calcium silicate (CaSiO·nH ₂ O), it is possible to self-repair (self-healing) voids or cracks inside concrete. This reaction of sodium silicate can be applied to lithium silicate and potassium silicate at the same time, and the metal silicate of the present invention releases a basic substance capable of recovering the pH (alkali) in concrete, and simultaneously generates silicon oxide or potassium silicate, resulting in voids. Alternatively, the crack can be continuously self-healing (self-healing).

In addition, the electric rust prevention reinforcing reinforcing reinforcement reducing material used in reinforced concrete construction changes from liquid or solid phase to gaseous phase and, when saturated, adsorbs to the metal surface to form a rust-preventing film with a low concentration of water-soluble nitrous acid (HNO ₂ ), When rebar corrosion occurs, the surrounding concrete is already neutralized (carbonic acid) and porosity, so if the nanocomposite silicate waterproofing agent penetrates into the concrete, it is compensated, that is, an alkaline region of pH 11 or higher to suppress rebar corrosion. It can regenerate the passive film produced by

The nanocomposite silicate sol may have a silicon dioxide solid content of 30 to 35 parts by weight, a metal oxide content of 25 to 30 parts by weight of sodium oxide, lithium oxide, and potassium oxide, and a pH of 3 to 6. The nanocomposite silicate sol may be separated into silicon dioxide and a metal oxide, and the content thereof may be measured. At this time, the silicon dioxide solid content is preferably contained in an amount of 30 to 50 parts by weight. If it is contained in an amount of less than 30 parts by weight, the self-healing ability of voids or cracks due to silicon dioxide may be deteriorated, and if it exceeds 35 parts by weight, silica may precipitate and the waterproofing properties may be deteriorated. The metal oxide is measured in the form of a mixture of sodium oxide, lithium oxide, and potassium oxide, and may include 25 to 30 parts by weight in the nanocomposite silicate sol. At this time, when the metal oxide is contained in an amount of less than 25 parts by weight, the pH is lowered, making it difficult to recover the pH (alkali recovery) in the concrete. If the amount exceeds 30 parts by weight, side reactions in which metal oxides and silica react may occur, and thus the ability to self-healing voids or cracks may be degraded. In addition, the nanocomposite silicate sol may have a pH of 3 to 6. The nanocomposite silicate sol is a silica compound such as water glass, and may be converted into a liquid and a solid according to a change in pH. When the pH of the nanocomposite silicate sol is less than 3, the formation of the sol is difficult because crystals of the silicate nanosol are grown and precipitated due to the aggregation of the silica sol. Since liquid is formed, it is difficult to expect waterproof properties.

The silane-based compound is added to increase the hardness of the alkali metal liquid nanocomposite silicate-based permeable waterproofing agent and to increase water resistance by forming a hydrophobic alignment layer and may include organo alkoxysilane or organo aminosilane.

_{The organo alkoxysilane is tetramethoxysilan (Tetramethoxysilan; Si(OCH 3} ) ₄ ), according to the necessity of introducing a methyl group in order to increase the hardness of the alkali metal liquid nanocomposite silicate-based permeable waterproofing agent and to form a heat-resistant coating film. Methyltrimethoxysilan (CH ₃ Si(OCH ₃ ) ₃ ), trimethylmethoxysilan ((CH ₃ ) ₃ SiOCH ₃ ), dimethyldimethoxysilane ((CH ₃ ) ₂ Si(OCH ₃₎ ) ₂ ), triethylmethoxysilan; (C ₂ H ₅ ) ₃ SiOCH ₃ ), ethyltrimethoxysilan; C ₂ H ₅ Si(OCH ₃ ) ₃ ), diethyldimethoxysilan ; (C ₂ H ₅ ) ₂ Si(OCH ₃ ) ₂ ) It is preferably used in the group consisting of, etc.

Organo Aminosilane is used to improve the chemical coupling between the hydrophobic alignment film and the concrete substrate and the coating film in order to increase the water resistance of the alkali metal liquid nanocomposite silicate-based permeable waterproofing agent that forms a coating film on the concrete surface. Ethyl)-3-aminopropyl-trimethoxysilane (CH ₃ O) SiCH ₂ CH ₂ CH ₂ NHCH ₂ CH ₂ NH ₂ , aminoethylaminopropyltriethoxysilane NH ₂ (CH ₂ ) ₂ NHC ₃ H ₆ Si (OCH ₂ CH ₃ ) ₃ , N-2-(benzylamino)-ethyl-3-aminopropyl-trimethoxysilane (CH ₃ O) ₃ Si(CH ₂ ) ₃ NHCH ₂ NH ₂ , N-2-( Vinylbenzylamino)-ethyl-3-aminopropyl-trimethoxysilane (CH ₃ O) ₃ Si(CH ₂ ) ₃ NH(CH ₂ ) ₂ It is preferable to use in NHCH ₂

Alkali metal liquid nanocomposite silicate-based waterproofing agent is aluminum oxide 5 to 15 parts by weight, calcium carbonate 5 to 10 parts by weight and titanium dioxide 1 to 5 parts by weight based on 100 parts by weight of the nanocomposite silicate sol to improve the durability of the concrete structure. It may contain more.

The aluminum oxide (Al ₂ O ₃ ) is for the purpose of introducing a function as an antistatic film because the adhesion of the waterproofing coating film to the base material (e.g., concrete) is improved, the top coat property (top coating workability) is improved, and the coating film becomes positively charged after the coating film is formed. As an addition, in the range of less than 5 parts by weight and more than 15 parts by weight per 100 parts by weight of the nanocomposite silicate sol, there is a problem that the film strength decreases, so it is preferable to add 5 to 15 parts by weight, and calcium carbonate (CaCO ₃ ) is sieved. As a pigment, it is added for the role of a filler, and in the range of less than 5 parts by weight and more than 10 parts by weight per 100 parts by weight of nanocomposite silicate sol, there is a problem that the film strength decreases when it is exceeded as an extender pigment, so it is added in 5 to 10 parts by weight. It is preferable to do, and titanium dioxide (TiO ₂ ) is added to impart hiding power to the concrete base, and if it is less than 1 part by weight based on 100 parts by weight of the nanocomposite silicate sol, the hiding power for the concrete base decreases and 5 parts by weight In the excess range, the effect of improving the hiding power on the concrete base is insignificant, so it is preferable to add 1 to 5 parts by weight.

Hereinafter, the alkali metal liquid nanocomposite silicate-based permeable waterproofing agent of the present invention will be described in detail according to the manufacturing method.

The alkali metal liquid nanocomposite silicate-based permeable waterproofing agent of the present invention

i) Silicon dioxide solid content is 30 to 35 parts by weight, particle size is 10 to 20 nm, sodium oxide content is 25 to 30 parts by weight, pH 9.0 to 10.5 aqueous colloidal nanometal oxide A 20 to 40 parts by weight ;

ii) 10 to 15 parts by weight of an aqueous colloidal nanometal oxide B having a silicon dioxide solid content of 30 to 35 parts by weight, a particle size of 10 to 20 nm, a lithium oxide content of 25 to 30 parts by weight, and a pH of 8.5 to 9.0; And

iii) 15 to 14 parts by weight of aqueous colloidal nanometal oxide C having a silicon dioxide solid content of 30 to 35 parts by weight, a particle size of 10 to 20 nm, a potassium oxide content of 25 to 35 parts by weight, and a pH of 9.0 to 10.0; A mixture of calcium hydroxide and ethanol (calcium hydroxide: ethanol = 1:4 weight ratio) was added to the prepared composite, so that the total pH of the composite solution was 12 to 13 and the metal oxide content was 25 to 35 parts by weight. A first step of preparing a composite colloidal nanometal oxide sol;

With respect to 80 parts by weight of the composite colloidal nanometal oxide sol of the first step, 15 to 25 parts by weight of pure water, 10 to 18 parts by weight of potassium hydroxide, and 0.2 to 0.6 parts by weight of aluminum hydroxide are added and stirred to obtain the nano metal oxide of the composite colloidal form. A second step of preparing an intermediate having a stable pH of 12 to 13 in terms of chemical structure by substituting aluminum ions and potassium ions in the functional groups of the nanoparticles of the sol;

And a third step of reacting for 10 to 100 minutes by adding 3 to 7 parts by weight of organoalkoxysilane and 3 to 7 parts by weight of organoaminosilane to 100 parts by weight of the intermediate of the second step. It can be manufactured with.

Step 1

i) Silicon dioxide solid content is 30 to 35 parts by weight, particle size is 10 to 20 nm, sodium oxide content is 25 to 30 parts by weight, pH 9.0 to 10.5 aqueous colloidal nanometal oxide A 20 to 40 parts by weight ;

ii) 10 to 15 parts by weight of an aqueous colloidal nanometal oxide B having a silicon dioxide solid content of 30 to 35 parts by weight, a particle size of 10 to 20 nm, a lithium oxide content of 25 to 30 parts by weight, and a pH of 8.5 to 9.0; And

iii) 15 to 25 parts by weight of an aqueous colloidal nanometal oxide C having a silicon dioxide solid content of 30 to 35 parts by weight, a particle size of 10 to 20 nm, a potassium oxide content of 25 to 35 parts by weight, and a pH of 9.0 to 10.0; To mix and stir.

A diluted solution (calcium hydroxide: ethanol = 1:4 by weight) consisting of calcium hydroxide (Ca(OH) ₂ ) and ethanol (ethanol; (C ₂ H ₅ OH)) was added to the thus prepared composite, so that the pH of the entire composite was 12 to 13 , To prepare a composite colloidal nano-metal oxide sol (composite alkali sol) using a homomix so that the metal oxide content is 25 to 30 parts by weight.

If only one of the above aqueous colloidal nanometal oxides A, B, C is used, the storage stability of the waterproofing agent is poor, and the state of the coating film becomes rough and the water resistance is also lowered.Thus, all three types of aqueous colloidal nanometal oxides A, B, and C are used. It is preferable to use.

Herein, in order to ensure that the pH of the composite colloidal nanometal oxide sol (composite alkali sol) is 12 to 13 and the metal oxide content is 25 to 30 parts by weight, the content of the aqueous colloidal nano metal oxide A is 20 to 40 parts by weight B The content of is preferably 10 to 15 parts by weight. Most preferably, the content of the aqueous colloidal nanometal oxide A may be 30 parts by weight and the content of B may be 13 parts by weight.

Likewise, it is preferable that the content of the aqueous colloidal nanometal oxide C is also 15 to 25 parts by weight. Most preferably, the content of the aqueous colloidal nanometal oxide C may be 20 parts by weight.

Step 2

15 to 25 parts by weight of pure water, 10 to 18 parts by weight of potassium hydroxide (KOH) and aluminum hydroxide (Al(OH) ₃ ) 0.2 to 80 parts by weight of the composite colloidal nanometal oxide sol of the first step By adding 0.6 parts by weight and stirring sufficiently, aluminum ions (Al ³⁺ ) and potassium ions (k ⁺ ) are substituted with the functional groups of the nanoparticles of the composite colloidal nanometal oxide sol to prepare an intermediate having a stable pH of 12 to 13 in terms of chemical structure. do.

The colloidal particles obtained by substituting metal ions of potassium and aluminum into the silicate nanoparticles of the composite alkali sol have a size of 10 to 20 nm and a pH of 12 to 13 to be used as a raw material for a nano composite silicate-based permeable waterproofing agent.

Here, in order to ensure that the pH of the intermediate is 12 to 13 and to facilitate substitution of aluminum ions and potassium ions, the content of pure water is 15 to 25 parts by weight based on 80 parts by weight of the composite colloidal nanometal oxide sol of the first step. It is desirable to disclaim it. Most preferably, the content of pure water may be 40 parts by weight.

Likewise, the content of potassium hydroxide is preferably 10 to 18 parts by weight based on 80 parts by weight of the composite colloidal nano-metal oxide sol in the first step. Most preferably, the content of potassium hydroxide may be 14 parts by weight.

Likewise, the content of the aluminum hydroxide is preferably 0.2 to 0.6 parts by weight based on 80 parts by weight of the composite colloidal nanometal oxide sol in the first step. Most preferably, the content of aluminum hydroxide may be 0.4 parts by weight.

Step 3

Alkali metal liquid nanocomposite silicate system by adding 3 to 7 parts by weight of organoalkoxysilane and 3 to 7 parts by weight of organoaminosilane to 100 parts by weight of the intermediate of the second step and reacting at 80°C at 3000 rpm for 10 to 100 minutes Prepare a permeable waterproofing agent.

Since the alkali metal liquid nanocomposite silicate-based permeable waterproofing agent can form a hydrophobic surface, it can not only play the role of an existing permeable contamination inhibitor, but also fill the pores of concrete with the included nanocomposite silicate sol. It can play the role of a reinforcing agent at the same time. Therefore, in the conventional method, the polishing floor finishing method was performed using a permeable antifouling agent and a permeable surface strengthening agent, respectively, but in the present invention, contamination prevention and surface reinforcement can be simultaneously performed by using a single agent.

In addition, the alkali metal liquid nanocomposite silicate-based permeable waterproofing agent penetrates the surface of the concrete with only one application, and may form a coating film on the surface, but may be repeatedly applied 2 to 10 times to improve durability by increasing the coating film. .

It is preferable to apply an alkali metal liquid nanocomposite silicate-based permeable waterproofing agent as described above, and then dry for 11 to 13 hours. Since the surface is polished after applying the permeable waterproofing agent, it is advantageous for the polishing operation to be sufficiently dry to have a certain strength or more. At this time, if the permeable waterproofing agent is dried for less than 11 hours, it is not completely cured and can be polished to a desired thickness or more during polishing.If the permeable waterproofing agent is dried for more than 13 hours, there is no additional strength improvement and foreign substances adhere to the surface when polishing. It can be disturbed.

When drying of the alkali metal liquid nanocomposite silicate-based waterproofing agent is completed, the concrete surface is polished and polished. At this stage, the operator can polish the concrete floor using equipment equipped with tools such as resin diamond.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or a known configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, certain features shown in the drawings are enlarged or reduced or simplified for ease of description, and the drawings and their components are not necessarily drawn to scale. However, those skilled in the art will readily understand these details.

Example 1

Step 1

i) 30 parts by weight of an aqueous colloidal nanometal oxide A having a silicon dioxide solid content of 32 parts by weight, a particle size of 10 nm, a sodium oxide content of 28 parts by weight, and a pH of 10;

ii) 13 parts by weight of an aqueous colloidal nanometal oxide B having a silicon dioxide solid content of 32 parts by weight, a particle size of 10 nm, a lithium oxide content of 28 parts by weight, and a pH of 8.3; And

iii) The silicon dioxide solid content is 33 parts by weight, the particle size is 10 nm, the potassium oxide content is 30 parts by weight, and the mixture is stirred at a ratio of 20 parts by weight of the aqueous colloidal nanometal oxide C having a pH of 9.5, and then, calcium hydroxide and ethanol are used. The resulting diluted solution (calcium hydroxide: ethanol = 1:4) was added to adjust the pH of the entire composite to be 12 to 13, and 100 g of a composite colloidal nano-metal oxide sol (composite alkali sol) was prepared using a homomix. At this time, the content of the metal oxide contained in the total composite colloidal nano-metal oxide sol (composite alkali sol) was made to be 28 parts by weight.

Step 2

With respect to 80 g of the complex colloidal nano-metal oxide sol in the first step, 20 g of pure water, 14 g of potassium hydroxide and 0.4 g of aluminum hydroxide are added and sufficiently stirred to obtain aluminum ions and potassium in the functional groups of the nanoparticles of the complex colloidal nano-metal oxide sol. By substituting ions, 114 g of an intermediate having a stable pH of 12 to 13 in terms of chemical structure was prepared.

Step 3

To 100 g of the intermediate of the second step, 5 g of methyltrimethoxysilane and 5 g of N-2-(aminoethyl)-3-aminopropyl-trimethoxysilane were added, and reacted at 80° C. at 3000 rpm for 1 hour, and finally alkali A metal liquid nanocomposite silicate-based permeable waterproofing agent was prepared.

Example 2

In Example 1, 20 parts by weight of the nano-metal oxide A, 5 parts by weight of the nano-metal oxide B, and 15 parts by weight of the nano-metal oxide C were used in the same manner.

Example 3

In Example 1, 40 parts by weight of the nano-metal oxide A, 5 parts by weight of the nano-metal oxide B, and 15 parts by weight of the nano-metal oxide C were used in the same manner.

Example 4

The same was carried out except that 20 parts by weight of the nano-metal oxide A, 15 parts by weight of the nano-metal oxide B, and 15 parts by weight of the nano-metal oxide C were used.

Example 5

The same procedure was performed except that 20 parts by weight of the nano-metal oxide A, 5 parts by weight of the nano-metal oxide B, and 25 parts by weight of the nano-metal oxide C were used.

Comparative Example 1

Except that the nano-metal compound B was not used in Example 1, it was carried out in the same manner.

Comparative Example 2

Except that the nano-metal compound C was not used in Example 1, it was carried out in the same manner.

Test Example 1

Chloride ion penetration resistance over time of the specimen formed according to the method of the present invention was measured by KSF-4930. Concrete structures are rapidly deteriorated by chloride ions, so the test for resistance to penetration of concrete against chloride ions is used as a measure to improve durability and prevent deterioration of concrete structures.Therefore, the better resistance to penetration of chloride is, the better the durability. can do.

The KSF-4930 standard stipulates that the chloride ion penetration resistance is less than 3.0㎜.

It was found that there was no abnormality in the deterioration of the coating film even after 3000 hours of the salt spray test by KSD-9502, which is a more severe condition, and an energization test was performed on KSF-4936 to obtain quantitative data on chloride penetration resistance.

The results are shown in Table 1.

Test Items Chloride ion penetration resistance Test Methods KSF-4930 KSD-9502 KSF-4936 standard 3.0mm or less No problem 1000 coulombs or less Test result Unapplied 7.2mm or more Corrosion of the specimen 3400coulombs Example 1 0 clear 0coulombs Example 2 0.2mm or less clear 120coulombs Example 3 0.1mm or less clear 210coulombs Example 4 0.2mm or less clear 180coulombs Example 5 0.2mm or less clear 170coulombs Comparative Example 1 2.9mm or less Partial corrosion of the specimen 1250coulombs Comparative Example 2 2.7mm or less Partial corrosion of the specimen 1100coulombs

As shown in Table 1, in the case of Example 1 of the present invention, it was found that not only had complete penetration resistance to chloride ions, but also did not show corrosion of the test specimen, thereby improving the durability of concrete. In the case of Example 2 in which the content of the nanometal compound was minimized and Examples 3 to 5 in which only a portion of each nanometal compound was used in an excessive amount, it was found that some chloride ion penetration occurred. Appeared to be missing. However, in the case of Comparative Examples 1 and 2 in which the nanometal compound B or C was not used, it was confirmed that chloride ions penetrated close to the reference value, and accordingly, it was confirmed that a part of the test sample was corroded.

Test Example 2

The water permeability test was measured according to KSF-4930, and the amount of absorption was measured according to KSF-4919.

As for the water-permeable test specimen, the strength of the test specimen of KSF-4930 and KSF-4919 and the concrete (28-day curing) specimen of KSF-4009 were 40.4 N/㎟, and the coating thickness was 100 μm or less.

The purpose of the water permeability test is to deteriorate the durability of the structure when factors that deteriorate concrete structures (acid ratio, salt water, CO ₂ , nitrogen oxides in the air, sulfur oxides, etc.) are dissolved through water and penetrated. This is to measure the permeability resistance of water, which is a mediating factor.

The results are shown in Table 2.

Test Items Water permeability Test Methods KSF-4930
Pitching ratio KSF-4919
Absorption KSF-4919
Water permeability standard 0.1 or less 2.0 or less Not pitched Test result Unapplied One 8.0 or less Pitched Example 1 0.01 or less 0.01 or less Not pitched Example 2 0.05 or less 0.8 or less Not pitched Example 3 Less than 0.03 0.5 or less Not pitched Example 4 0.04 or less 0.4 or less Not pitched Example 5 Less than 0.02 0.4 or less Not pitched Comparative Example 1 0.28 or less 1.9 or less Not pitched Comparative Example 2 0.27 or less 2.7 or less Not pitched

As shown in Table 2, in the case of Example 1 of the present invention, it was confirmed that durability could be improved by blocking the penetration of water, which is a deterioration medium. In the case of Examples 2 to 5 and Comparative Examples 1 and 2, the water permeability was not confirmed as a result of testing according to the water permeability test method of KSF-4919, but in the experiment according to the absorption amount of KSF-4930 and KSF-4919, some It was found to absorb moisture, and in particular, in the case of Comparative Examples 1 and 2 in which some nanometal compounds were not used, the absorption amount and the water permeability ratio were found to be difficult to perform as a waterproofing agent beyond the standard value.

Test Example 3

Carbonation depth was measured using the KSF-2584 concrete accelerated carbonation test method and the KSF 2596 concrete carbonation depth measurement method.

The concrete structure absorbs carbon dioxide in the air and reacts with calcium hydroxide, which is a cement hydrate, Ca(OH) ₂ + CO ₂ → CaCO ₃ +H ₂ O, becomes calcium carbonate, and is neutralized, resulting in whitening and deteriorating the concrete structure. Therefore, by forming a coating film having permeation resistance to carbon dioxide, deterioration of concrete can be suppressed and durability can be improved.

Therefore, in this accelerated carbonization test, it is a test to prevent corrosion of reinforcing bars in concrete structures by reducing the pH of concrete due to carbonation of concrete, and to block the source of cracks in structures due to corrosion of reinforcing bars.

The experiment was conducted under the conditions of a waterproof coating thickness of 100 μm or less, a temperature of 20±2° C., a relative humidity of 50±5%, and a carbon dioxide concentration of 5±0.2%.

The results are shown in Table 3.

Test Items Accelerated carbonation experiment Test Methods KSF-2584, KSF-2596 standard 0.8 or more of standard concrete Test result Unapplied 10.3mm Example 1 0mm Example 2 0.2mm Example 3 0.1mm Example 4 0.1mm Example 5 0.1mm Comparative Example 1 1.3mm Comparative Example 2 1.4mm

As shown in Table 3, in the case of uncoated concrete, it was confirmed that carbonation proceeded to a depth of 10.3 mm, whereas in Example 1 of the present invention, carbonation did not appear. This means that the process of preventing carbonation by restoring the pH of the nanometallic compound contained in the waterproofing agent of the present invention is being performed normally, and although some carbonation occurred in Examples 2 to 5, it was at a very low level compared to the reference value. It was confirmed that only carbonation was occurring and the pH was being restored. Therefore, when the alkali metal liquid nanocomposite silicate-based permeable waterproofing agent according to the present invention is used, the permeation resistance to carbon dioxide is very excellent, and even if carbonation by some permeated carbon dioxide occurs, the pH recovery phenomenon due to the nanometal compound appears and carbonation is prevented. I was able to confirm what can be minimized.

Test Example 4

The permeable waterproofing agent prepared by the method of Examples 1 to 5 and Comparative Examples 1 and 2 was applied to a normal concrete specimen (10cmX10cmX10cm), and then dried for 48 hours. At this time, the common concrete formulation used in Examples 1 to 5 and Comparative Examples 1 to 2 had a nominal strength of 180 and an average porosity (%) of 13.9%. Thereafter, the specimen was cut into a size of 4 to 5 mm, and then the porosity was measured up to a maximum pressure of 60,000 psi using Auto Pore IV 9520 of Micromeritics of the United States.

Porosity (%) Example 1 8.7 Example 2 9.3 Example 3 8.9 Example 4 9.4 Example 5 9.8 Comparative Example 1 12.8 Comparative Example 2 11.4

As shown in Table 4, in the case of the specimen treated with the permeable waterproofing material of Examples 1 to 5 of the present invention, it was confirmed that the porosity was reduced to the level of high-strength concrete. In general, the porosity of ordinary concrete is 10-20%, the porosity of high-strength concrete is 5-8%, and the porosity of high-performance concrete is less than 3%. In the case of applying the permeable waterproofing material of the present invention, it was confirmed that the porosity was greatly reduced even when ordinary concrete was used, and thus it had a porosity close to that of high-strength concrete. However, in the case of Comparative Examples 1 and 2, the reduction in porosity was not noticeable, but it was confirmed that the porosity was comparable to that of ordinary concrete.

Example 6

The entire surface layer of the concrete floor was ground about 1 mm using a grinding machine equipped with a #70 metal diamond tool.

Next, 50% by weight of a water-soluble pigment was mixed with 20% by weight of ethanol and 30% by weight of water, applied to the surface layer of the concrete floor using a spray, dyed the concrete floor, and dried for 4 hours to dry the concrete floor well. I did.

After drying was completed, the permeable waterproofing agent prepared in Example 1 was evenly applied to the concrete floor, and dried for 12 hours.

After drying was completed, the surface layer of the concrete floor was polished and polished four times using a grinding machine equipped with #400, #800, #1500, #3000 resin diamond tools.

Example 7

It was carried out in the same manner as in Example 6, except that the permeable waterproofing agent prepared in Example 2 was used instead of the permeable waterproofing agent prepared in Example 1.

Comparative Example 3

It was carried out in the same manner as in Example 6, except that a permeable antifouling agent (Ameripolish, Sure Lock Stain Protect) and a permeable surface strengthening agent (Ameripolish, Sure Lock Densifier Lithium) were used in place of the permeable waterproofing agent.

Test Example 5

The hardness of the floor surface constructed by the methods of Examples 6 to 7 and Comparative Example 3 was measured, and the number of cracks was measured to confirm whether the construction was normally performed. The hardness was measured using a rebound hardness tester using a Schmidt hammer used to measure the hardness of concrete, and cracking was measured by visually counting the number of cracks within each 10mX10m space.

Example 6 Example 7 Comparative Example 3 Surface hardness 44 41 43 Number of cracks No cracking No cracking No cracking

As shown in Table 5, in the case of Examples 6 and 7 to which the permeable waterproofing agent of the present invention was applied, it was confirmed that construction at the same level as Comparative Example 3 constructed by the conventional method was possible. In particular, in the case of Examples 6 and 7 of the present invention, concrete hardening and contamination prevention can be simultaneously performed using only one medicinal material, so it was confirmed that construction was quick and simple compared to Comparative Example 3, which is a conventional method.

As described above, specific parts of the present invention have been described in detail, and it will be apparent to those of ordinary skill in the art that these specific techniques are only preferred embodiments, and the scope of the present invention is not limited thereby. will be. Accordingly, it will be said that the substantial scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

(a) a surface treatment step of grinding the surface layer of the concrete floor so as to obtain a desired level of roughness or pattern;
(b) nanocomposite silicate sol composed of sodium silicate, lithium silicate, and potassium silicate after the surface treatment step; Silane compounds; And a waterproofing and reinforcing treatment step of infiltrating an alkali metal liquid nanocomposite silicate-based permeable waterproofing agent including an additive including silicon carbide and metal oxide into the concrete floor. And
(c) a polishing step of polishing the surface layer of the concrete floor,
The nanocomposite silicate sol,
i) 20 to 40 parts by weight of aqueous colloidal nanometal oxide A having a silicon dioxide solid content of 30 to 35 parts by weight, a particle size of 10 to 20 nm, a sodium oxide content of 25 to 30 parts by weight, and a pH of 9.0 to 10.5 part; ii) Aqueous colloidal nanometal oxide B 10 to 15 having a silicon dioxide solid content of 30 to 35 parts by weight, a particle size of 10 to 20 nm, a lithium oxide content of 25 to 30 parts by weight, and a pH of 8.5 to 9.0 Parts by weight; And iii) a silicon dioxide solid content of 30 to 35 parts by weight, a particle size of 10 to 20 nm, a potassium oxide content of 20 to 35 parts by weight, an aqueous colloidal nanometal oxide C 15 to a pH of 9.0 to 10.0. Concrete polishing floor finishing method using a concrete permeable surface reinforcement and an anti-pollution agent, characterized in that a composite of 25 parts by weight is dispersed in an alcohol-based solvent.
The method of claim 1,
Concrete polishing floor finishing method using a concrete permeable surface reinforcement and an anti-pollution agent, characterized in that drying for 11 to 13 hours after step (b).
The method of claim 1,
Concrete polishing floor finishing method using a concrete permeable surface reinforcement and an anti-pollution agent, characterized in that it further comprises the step of curing by applying a colorant after the step (a).
The method of claim 3,
A concrete polishing floor finishing method using a concrete permeable surface reinforcement and an anti-pollution agent, characterized in that it comprises a grinding step of polishing the surface layer after the step of applying and curing the colorant.
The method of claim 1,
The nanocomposite silicate sol contains 40 to 80 parts by weight of sodium silicate, 10 to 30 parts by weight of lithium silicate, and 30 to 50 parts by weight of potassium silicate. Method.
delete delete The method of claim 1,
The silane-based compound is a concrete polishing floor finishing method using a concrete permeable surface reinforcing agent and an anti-pollution agent, characterized in that it contains organo alkoxysilane or organo aminosilane.
The method of claim 8,
The organo alkoxysilane is any one of tetramethoxysilane, methyltrimethoxysilane, trimethylmethoxysilane, dimethyldimethoxysilane, triethylmethoxysilane, ethyltrimethoxysilane, and diethyldimethoxysilane,
The organo aminosilane is N-2-(aminoethyl)-3-aminopropyl-trimethoxysilane, aminoethylaminopropyltriethoxysilane, N-2-(benzylamino)-ethyl-3-aminopropyl- Concrete polishing floor finishing method using any one of trimethoxysilane and N-2-(vinylbenzylamino)-ethyl-3-aminopropyl-trimethoxysilane, which is characterized by reinforcing the permeable surface of concrete and using an anti-pollution agent. .
The method of claim 1,
Using a concrete penetration surface reinforcement and penetration pollution inhibitor, characterized in that it further comprises 5 to 15 parts by weight of aluminum oxide, 5 to 10 parts by weight of calcium carbonate, and 1 to 5 parts by weight of titanium dioxide based on 100 parts by weight of the nanocomposite silicate sol. One concrete polishing floor finishing method.