KR101964235B1 - Stabilizer for wettable floor materrial, manufacturing method thereof, and construction method using it - Google Patents

Abstract

The present invention relates to a fast curing floor stabilizer for a wet base surface, a manufacturing method thereof, and a construction method thereof. More specifically, the fast curing floor stabilizer for a wet base surface is made by mixing a powder material and a liquid material at the ratio of 2 : 1, wherein the powder material consists of 25 to 50 wt% of cement, 2 to 7 wt% of gypsum, 35 to 60 wt% of silica sand, 2 to 10 wt% of slaked lime, 4 to 12 wt% of fast-curable cement, 1 to 3 wt% of dispersant, 0.5 to 1 wt% of quick admixture, 0.5 to 1 wt % of methyl cellulose, and 0.5 to 1 wt% of cellulose fiber, and the liquid material consists of 15 to 45 wt% of acrylic resin, 20 to 25 wt% of ethylene-vinyl acetate copolymer (EVA) resin or styrene butadiene rubber (SBR) resin, 1 to 5 wt% of antifoaming agent, 10 to 20 wt% of plasticizer, 0.3 to 0.7 wt% of preservative, 10 to 20 wt% of silica sol, and 5 to 18 wt% carbon nanotube (CNT). Therefore, even if construction is performed on a wet base surface, early curing is performed and strong adhesive force is applied by reacting with the moisture of the base surface. The present invention has an excellent blocking effect of gas generated under a surface to be attached, thereby blocking the penetration of moisture. The fast curing floor stabilizer enables waterproof construction within a short time after application.

Description

Fast curing base stabilizer for wet base surface, manufacturing method thereof and construction method thereof {STABILIZER FOR WETTABLE FLOOR MATERRIAL, MANUFACTURING METHOD THEREOF, AND CONSTRUCTION METHOD USING IT}

The present invention relates to a fast curing base stabilizer for wet base surface, a method for manufacturing the same, and a method for constructing the same, in particular, even if the base surface is moist, even if the base surface reacts with the moisture of the base surface, because the early curing and strong adhesion is applied, Fast blocking base stabilizer for wet ground surface, and a method of manufacturing the same, which is excellent in blocking the gas generated from the lower surface, and thus prevents penetration of moisture and is a fast curing base stabilizer. It is about the construction method.

In general, concrete can cause fine cracks, defects in the joints, cracks due to external forces, and even if the corrosion is intensified, the embedded steel is corroded and the durability of the structure is severely degraded. There is a problem that impairs the function of, and when moisture penetrates into the concrete, it can be a problem, when a new construction or renovation of the floor layer, such as the interior of the building and civil engineering structure is made, some of the moisture does not evaporate into the building In order to prevent penetration and adversely affect the durability of the structure, various waterproofing materials are used to perform waterproofing on structures such as exterior walls and floors.

In this case, when the concrete surface is wet, there is a problem in that the coating material is lifted or cracks due to the lack of correspondence to the behavior of the base surface without the waterproof / corrosive coating material not properly attached to the construction surface.

In order to solve this problem, conventionally, before forming an external exposed surface with a coating material containing a polyurea resin, which is a super fast curing resin, while preventing the pinhole occurrence of the coating layer using a water-soluble epoxy cement, even if the bottom layer of the concrete structure is wet, There was a method to maintain the adhesion of the coating layer firmly on the wet side.

In addition, there was a method of allowing homogeneous construction without pinholes under wet conditions with high moisture content by using an epoxy or urethane waterproofing method using a water-soluble polyamine-based backing agent.

However, the above-described conventional techniques do not adhere to the coating layer firmly when the concrete floor or surface is wet, and even when the surface contains a dry state when the surface contains moisture in various types of pores present in the concrete structure. Even after the construction, water vapor pressure may be generated at the interface of the waterproof layer of the coating due to the humidity difference according to the use environment, or the bubble may expand, resulting in pinhole phenomenon and swelling.

Therefore, it is possible to penetrate the concrete surface of the wet environment while overcoming the limitations of the existing waterproofing and anticorrosive materials, and the existing waterproofing materials have high water content of the concrete and moisture in the mother, causing poor adhesion, water pockets, and lifting. There is a continuous need for a coating that can be solved.

The present invention has been made in view of the above problems and demands, even if the base surface required for waterproof construction is wet, by reacting with the moisture or moisture of the base surface to maintain a more strong adhesive state, subsequent waterproof It provides a fast curing base stabilizer for wet ground surface, and a manufacturing method and its construction method to make the construction more complete, as well as to have a fast curing function to enable a faster construction to shorten the construction period Its purpose is to.

The above purpose is 25 to 50% by weight of cement, 2 to 7% by weight of gypsum, 35 to 60% by weight of silica sand, 2 to 10% by weight of slaked lime, 4 to 12% by weight of hard cement, 1 to 3% by weight of dispersant, and quickening It is achieved by a wet base surface fastening ground stabilizing powder material, characterized in that the admixture consists of 0.5 to 1% by weight, methyl cellulose 0.5 to 1% by weight, cellulose fiber 0.5 to 1% by weight.

On the other hand, the above object, the first step of mixing 25 to 50% by weight of cement (kneader) and then 35 to 60% by weight of silica sand and 1 to 3% by weight of dispersant to the kneader and mixing for 20 minutes; A second step of mixing 0.5 to 1% by weight of methyl cellulose in the kneader after the first step and then mixing for 10 minutes; After the second step is carried out by the method of manufacturing a wet base surface fastening ground stabilized powder material comprising a third step of mixing 0.5 ~ 1% by weight of the quench admixture into the kneader and then mixed for 1.5 to 2 hours .

On the other hand, the above purpose, acrylic resin 15 to 45% by weight, EVA resin (Ethylene-Vinyl acetate copolymer) or SBR (Styrene Butadiene Rubber) resin 20 to 25% by weight, defoamer 1 to 5% by weight, plasticizer 10 to 20% by weight %, Preservative 0.3 to 0.7% by weight, silica sol (Silica Sol) 10 to 20% by weight, CNT (Carbon nanotube) 5 to 18% by weight It is achieved by a fast-drying surface stabilizer liquid material for a wet base surface .

On the other hand, the above object, 15 to 45% by weight of acrylic resin, 20 to 25% by weight of EVA resin (Ethylene-Vinyl acetate copolymer) or SBR (Styrene Butadiene Rubber) resin is added to the kneader and mixed for 40 minutes Step A and; A step B of mixing 10 to 20% by weight of a plasticizer into the kneader after the step A and mixing for 20 minutes; A step C of mixing 1 to 5 wt% of the antifoaming agent into the kneader after the step B and mixing for 20 minutes; After the step C is carried out step 10 to 20% by weight of silica sol (Silica Sol), 0.3 to 0.7% by weight of preservatives, 5 to 18% by weight of CNT (Carbon nanotube) to the kneader and mixing for 2 hours It is achieved by a method of producing a liquid material for fast curing ground stabilization for wet ground surface comprising.

On the other hand, the above purpose is 25 to 50% by weight of cement, 2 to 7% by weight of gypsum, 35 to 60% by weight of silica sand, 2 to 10% by weight of slaked lime, 4 to 12% by weight of hard cement, 1 to 3% by weight of dispersant Powder powder consisting of 0.5-1 wt% of a quench admixture, 0.5-1 wt% of methyl cellulose, and 0.5-1 wt% of cellulose fiber; 15 to 45 wt% of acrylic resin, 20 to 25 wt% of EVA resin (Ethylene-Vinyl acetate copolymer) or SBR (Styrene Butadiene Rubber) resin, 1 to 5 wt% of antifoaming agent, 10 to 20 wt% of plasticizer, 0.3 to 0.7 wt% of preservative %, Silica sol (Silica Sol) 10 to 20% by weight, CNT (Carbon nanotube) by a fast curing base stabilizer for wet surface, characterized in that the mixture consisting of 2 to 1 by weight of the liquid material Is achieved.

In addition, the above object is also achieved by the method of constructing the wet curing surface stabilizer base stabilizer, characterized in that the wet ground surface hardening base stabilizer is applied to the base surface at 1.55 kg / m 2 or more.

The present invention is a fast-curing base stabilizer made of organic materials and inorganic materials, and can be attached even to a wet base surface, and it is possible to secure the necessary thickness by only one application, and to react with moisture on the adhered surface, thereby premature curing is achieved. Made of strong adhesion to the surface is effective.

In addition, the present invention has excellent water-tightness and excellent blocking effect of the gas generated under the adhered surface, thereby preventing the penetration of moisture and attaching the waterproof sheet to the upper part after application, thereby rapidly proceeding waterproof construction even on the wet base surface. Has the effect of enabling it.

The fast curing base stabilizer for wet ground surface according to the present invention is divided into a powder material and a liquid material, and the powder material and the liquid material are each composed of a separate composition, and then the powder material and the liquid material in a weight ratio of 2: 1. It is used to mix.

The above-mentioned powder material and liquid material is a mixture of the fast curing base stabilizer for the wet base surface according to the present invention, and the powder material and the liquid material may be used by mixing liquid materials and powders distributed in the market, respectively. Background stabilizers used by mixing the product in the performance of the strong adhesive force to the wet base surface according to the present invention, such as the permeability to the micro-cracks of the base, but the performance does not reach the present invention, the present invention is a powder and a liquid material, respectively After the composition is mixed and used, the rights of the present invention are divided into powder and liquid materials, and the resultant mixture of wet base surface fast curing base stabilizer is claimed.

First, the powder material constituting the fast curing base stabilizer for wet base surface according to the present invention is as follows.

The powder material is 25 to 50 wt% cement, 2 to 7 wt% gypsum, 35 to 60 wt% silica sand, 2 to 10 wt% slaked lime, 4 to 12 wt% fast cement, 1 to 3 wt% dispersant, quench admixture 0.5 to 1% by weight, methyl cellulose 0.5 to 1% by weight, cellulose fiber 0.5 to 1% by weight.

The cement of the composition of the fast curing ground stabilized powder for the wet base surface is cured through a hydration reaction with water contained in the liquid material to be described later, and serves as an inorganic adhesive on the base surface, which is 25% by weight based on the total weight of the powder material. Desorption phenomenon occurs due to the decrease in the adhesive strength with the adherend due to the decrease of the time-sintering reaction and the increase of other additions, and partial failure occurs due to the rapid condensation of cement when it is added more than 50% by weight based on the total weight. And manufacturing costs rise.

Gypsum in the composition of the fast curing ground-stabilizing ground powder for the wet base surface is formed by the reaction with Calcium aluminate tricalcium (C3A) (C3A.3CaSO4.32H20) and can control the setting time by dihydrate.

The effect of controlling the coagulation time is to form a needle-like crystal structure of ethrinzite on the particle surface of tricalcium aluminate (C3A), and this layer serves to delay the next hydration reaction of tricalcium aluminate (C3A). Therefore, it is preferable to induce the condensation of cement to occur mainly by the hydration reaction of calcium silicates (C3S, C2A).

The reaction of producing ethrinzite from tricalcium aluminate (C3A) effectively solidifies water as compared to the hydration reaction of silicate, so that the free water in the matrix is fixed to the crystal water to reduce the actual water-cement ratio. Can be attributed.

The chemical reaction is as follows.

C ₃ A + CaSO ₄ + 32 H ₂ O → C ₃ A, ₃ Ca SO ₄ , 32 H ₂ O

2C ₃ S + 6H ₂ O → 3CaO · 2SiO ₂ · 2H ₂ O + 3Ca (OH) ₂

2C ₂ S + 4H ₂ O → 3CaO · 2SiO ₂ · 2H ₂ O + Ca (OH) ₂

Gypsum in the composition of the fast curing ground stabilized powder for wet ground surface is solidified by expanding the excess moisture present in the pores of the cement gel by chemical action due to a large amount of adsorption, hydrate when added to 2% by weight or less based on the total weight of the powder Insufficient production of Ettrinzat (C ₃ A · 3CaSO ₄ · 32H ₂ 0) results in the transition to monosulfate, resulting in a decrease in strength, and addition of more than 7% by weight of the hydration of the binder Because of the delay, the working time increases, and thus, the initial strength is not expressed, and the curing agent is over-expanded, resulting in a decrease in strength.

And, in order to secure the workability when placing concrete, if the water-cement ratio is maintained after pouring, the excess moisture is adsorbed, and then the hydration of cement occurs to lower the water-cement ratio and expands, Filling the micropores completely tightly increases the long-term strength of the concrete, and has the effect of preventing the corrosion of the reinforcing bars.

Silica sand in the composition of the fast curing ground-stable ground material for wet ground surface is used to express strength, and by adding silica sand having different particle sizes to lower porosity, concrete using mixed silica mixed with acrylic resin and EVA resin It is desirable to increase the compressive strength of and increase the waterproof performance.

It is more effective to add the mixed silica sand in which 18.87% by weight of acrylic resin, 33.96% by weight of calcium carbonate and 47.17% by weight of silica sand are mixed.

When using mixed silica sand, the use of mixed silica sand reduces the thermal expansion and shrinkage due to temperature, which reduces the occurrence of cracks.The addition of mixed silica increases the contact area with the surface to be deposited, which improves the adhesion strength and significantly reduces the water porosity. It has excellent resistance such as chemical penetrability, which prevents corrosion of rebar and oxidation of concrete, thereby improving durability of concrete.

The silica sand has a lower compressive strength when added to less than 35% by weight, based on the total weight of the fast curing ground stabilized ground stabilized powder for the wet ground surface, and the condensation speed is faster, the construction is inconvenient, the price is increased, and when more than 60% by weight, the softness It is easy to be broken even by a small vibration by a fall, and adhesive force falls remarkably by a fall of adhesive force.

The hydrated lime in the composition of the fast curing ground stabilized powder for wet ground surface reacts with quicklime (CaO) and water to cause calcium ions to be consumed by a hydration reaction, and at this time, an exothermic reaction in which heat is generated while calcium ions are consumed. When generated, calcined lime (Ca (OH) ₂ ) is produced, also called calcium hydroxide.

The slaked lime is a white powder, having a density of 2.211 g / cm 3, a melting point of 580 ° C., a molecular weight of 74.093 g / mol, and a solubility of 0.173 g / 100 ml (20 ° C.).

The slaked lime is a basic substance containing a hydroxyl group and has two hydroxyl groups per molecule of calcium hydroxide, and it is insoluble in water so that only about 0.82 g is dissolved in 1 L of water, but has a high ionization degree (dissociability).

Calcium hydroxide, once dissolved in water, has a strong basicity of pH 12.5, which delays the progress of concrete oxidation by water, oxygen in the air, and other chemicals to improve the durability of concrete.

It is easily combined with carbon dioxide, and when combined, it produces calcium carbonate that is insoluble in water, and calcium carbonate reacts with cement to improve the strength of cement, thereby improving resistance to breakage and cracking caused by external pressure.

When the slaked lime is added less than 2% by weight based on the total weight of the fast ground-based ground stabilized powder for wet ground, problems occur in initial strength, the flow value drops sharply, and when it exceeds 10% by weight, excess calcium hydroxide is added to the hardened body. As a result, there is a problem that the structure becomes weak in the long term.

The fast-hardening cement composition of the fast-drying ground-stabilizing ground powder for wet ground surface is usually cemented to reduce the amount of C ₃ S compared to portland cement in order to increase the condensation and curing speed. Compared with 2,800 ~ 3,500cm2 / g, which is the degree of powder, the powder level is increased to 4,000 ~ 4,500cm2 / g and the amount of gypsum added is not only to express the initial strength of cement but also to reduce the strength even for a long time. It is usually 2-3 times stronger than Portland cement.

Fast cement is divided into alumina-based cement (CA), amorphous alumina-based (C12A7), Arwin-based (Hauyne), etc. Among these, one kind and two kinds are selected and added.

Alumina cement (CA) is a cement composed mainly of CaO · Al ₂ O ₃ , 12CaO · 7Al ₂ O ₃ , and CaO · 2Al ₂ O ₃ , which are calcium aluminate minerals. 6-12 hours after mixing with, usually equal to the 28-day aging strength of Portland cement.

Alumina (CA) is more resistant to sulfates, acids and chemicals than ordinary cements and mixed cements. When used with fire-resistant aggregates, alumina (CA) has high fire resistance, high heat of hydration and excellent early strength development. It is used for the construction of Korea, China, China, and structures requiring corrosion resistance.

The cemented carbide is used for air shortening, cold concrete, etc. as a reddit concrete using rapid condensation, hardening, and strength expression, and when used for concrete products, the mold can be demolished early. Turnover can be increased.

When used for prestressed concrete, it is possible to shorten the curing time or lower the medium curing temperature, and to accelerate the introduction of the prestress, and the hydration of cement proceeds quickly, so creep has a small advantage.

Its strength expression is excellent even at low temperatures, so it is possible to reduce the fear of the East Sea in winter construction.

The cemented carbide is less than the cemented carbide content when added to 4% by weight or less, based on the total weight of the ground-curing ground stabilized powder for the wet ground surface, the condensation, hardening phenomenon is not manifested, can not obtain a strong strength concrete, The watertightness is lowered, so the oxidation phenomenon is faster and the durability of the concrete is lowered.

In addition, when more than 12% by weight, based on the total weight of the fast curing ground-stabilizing ground powder for the wet ground surface, the condensation and curing rate is too fast, making the work inconvenient, and it is not possible to achieve uniform strength of concrete because it is not dispersed. Occurs when the strength of concrete decreases due to irregularity of evaporation of water in concrete.

The dispersant in the composition of the fast curing ground-stabilizing powder for wet ground surface, as a kind of admixture of concrete to disperse the particles of cement to effect the chemical action, and the water-incomparable concrete in water is viscous to prevent material separation due to the loss of cement It is added for synergistic purposes, but the workability is lowered, so it is necessary to add a dispersant (fluidizing agent) in order to secure workability.

The dispersant is adsorbed on the surface of the cement to form a double electric charge layer on the surface of the particles, due to the electrostatic mutual repulsion between the particles due to the charge layer to disperse the aggregated cement particles and the fluidity of the cement paste by the repulsive action Increases.

Kinds are divided into naphthalansulfonate salt, melamine sulfonate salt, polycarbonate salt and the like, and anionic naphthallansulfonate salt is most frequently used.

The dispersing agent provides high water-resistance by excellent dispersibility to reduce the number of units, thereby obtaining high durability concrete, keeping the workability for a long time by maximally suppressing the slump and the change of air amount over time, improving the material separation resistance High workability with little material separation or bleeding, excellent dispersion effect and reduced drying shrinkage even when mixing fly ash, fine slag powder and silica fume, greatly improving resistance to freeze-thawing and improving water resistance It suppresses the penetration of harmful factors such as moisture into concrete.

The dispersant may not exhibit dispersibility when added to less than 1% by weight based on the total weight of the fast curing ground-stabilized ground stabilized powder for the wet base surface, and loses resistance to freezing and thawing; The work time is delayed due to the delay, and it is easily damaged by the decrease in strength of concrete.

The quick-mix admixture (promoting agent) among the composition of the fast curing ground-stabilizing ground powder for wet ground surface is presented as a method for securing technological competitiveness for shortening the air at the construction site, and in order to shorten the air by applying various methods in structure construction and finishing work. It is necessary.

The most commonly applied compressive strength in domestic construction sites is concrete with 21 ~ 27 MPa. Classification of quench admixtures (promoters) is generally classified as alkali, alkaline earth metals (water soluble inorganic salts, water soluble organic salts) and alkaline earth metals are widely used.

Water-soluble organic salts are Calcium nitrite (CN), Sodium nitrate (Sn), Sodium nitrite (Sni), Potassium thiocyanate (Pt), and water-soluble organic salts are Calcium fomate (Cf), Sodium acetate (Sa), and Triethanolamine (TEA). .

Among them, water-soluble organic salts are used a lot, and among these accelerators, water-soluble inorganic salts have better curing acceleration effects than organic salts, and within a small amount of use, water-soluble inorganic salts promote hydration of C ₃ S by water-soluble inorganic salts. The effect is effective for expression.

Among the water-soluble inorganic salts, chloride is known to be most effective in terms of promoting effect or economical efficiency, but it is not preferable because it may adversely affect the corrosion of reinforcing bars, and in general, a lot of TEA accelerators are used, but in the present invention, one or more of Select two types and use.

The initial strength development of water-soluble inorganic salts is due to the effect of promoting the recovery of C ₃ S in cement minerals.

The quench admixture (accelerator) has no effect on the condensation and hardening of concrete when 0.5 wt% or less is added based on the total weight of the fastening ground stabilized ground stabilizer powder for wet ground surface, and when it is added 1 wt% or more, Hardening manifests quickly, making construction difficult.

Methyl cellulose in the composition of the fast curing ground stabilized powder for wet ground surface as an additive used for the purpose of building plastering, cement mortar thickener, water retention, work time, etc., it can secure water retention, thickening properties, When it is added 0.5 wt% or less based on the total weight of the fastening base stabilizer powder for wet base surface, it can't act as a moisturizer and thickener in concrete, and when it is added above 1 wt%, workability becomes poor and water absorption is excellent. Excessive addition causes a decrease in the strength of concrete.

Cellulose fibers in the composition of the fast curing ground-stabilizing ground powder for wet ground surface is recycled as a desired insulation material made of wood fiber such as pulp and newspaper paper, and is put into concrete because it is a hydrophilic material made of wood fibers extracted from wood. When the fiber chips are put into the concrete mixer process, they are separated into individual independent strands by the physical force striking the aggregates and are evenly distributed in the concrete.

As a result of the test, the concrete added 0.9 kg / m2 of fiber had 80% less cracking than the concrete without fiber, and the water contained was absorbed because it absorbs excess water of concrete as hydrophilic and conservative fiber. It acts in the second half to promote the hydration of concrete in the long run and to suppress self-shrinkage in high strength concrete.

Compared with other fiber materials, the fiber surface area is much larger than the other fiber materials, so it has excellent adhesion with cement paste in concrete, and excellent adhesion with cement, which can reduce cracks such as plastic shrinkage crack and dry shrinkage crack. When added below% can not act as a water retention, thickener, when added more than 1% by weight, the mixing time is long, dispersing power due to high viscosity.

The wet hardening ground stabilized powder material for the wet base surface having the composition ratio as described above was added to the kneader 25 to 50% by weight of silica sand 35 to 60% by weight and dispersant 1 to 3% by weight after The first step of mixing for 20 minutes, 0.5 to 1% by weight of methyl cellulose after the first step is added to the kneader and the second step of mixing for 10 minutes, and 0.5 to 1% by weight of the quick admixture after performing the second step After the addition to the kneader is prepared by a method for producing a wet base surface fastening ground stabilized powder material comprising a third step of mixing for 1.5 to 2 hours.

On the other hand, when the wet base material for the fast curing base stabilizer constituting the wet base surface fastening base stabilizer according to the present invention.

The acrylic resin of the fast curing ground-stabilizing liquid for the wet base surface is a reactive resin made to have a double carbon bond through a polymerization reaction of Acrylic Methacrylic Acid Ester, and has excellent durability, heat resistance, chemical resistance, abrasion resistance, and UV stability. In general, the curing time is adjusted depending on the amount of the curing accelerator added.

The low chlorine ion penetration resistance of concrete due to electrical conductivity in concrete means that the concrete has resistance to chlorine ions even after curing, and can compensate for the weakness of chemical resistance, which is a disadvantage of cement, and has a dense structure. Therefore, it is possible to increase the durability of concrete by improving salt prevention, preventing concrete oxidation by moisture or oxygen in the air, and preventing corrosion of reinforcing steel.

Concrete with acrylic resin has excellent adhesiveness, which improves the bonding strength between concrete fillers such as aggregate, cement, and silica sand, thereby improving impact resistance by increasing tensile strength.

Therefore, the addition of the acrylic resin improves the ductility, increases the compressive strength and the compressive strain, and improves the bending strength and the bending strain even at low temperatures.

The acrylic resin does not exhibit all the functions such as ductility, water retention, and adhesion when added to 15% by weight or less, based on the total weight of the fast-drying surface stabilized liquid for wet grounding, and cannot be expected to improve performance compared to conventional concrete. It increases, the price increases when added more than 45% by weight, the workability is lowered due to the viscosity rise, the dispersing power is also lowered, there is a risk of breakage at a large pressure due to low ductility at low temperatures.

EVA (Ethylene-Vinyl acetate copolymer) resin or SBR (Styrene Butadiene Rubber) resin among the wet hardening surface stabilizer base material is a safe liquid resin when dispersed in water with a dispersion material prepared by spray drying As a polymer, powdered resin dispersed in water forms an irreversible polymer film that is insoluble in water after drying, and is mixed with cement like liquid resin to improve tensile and bending strength. It promotes adhesion with inorganic base materials.

The addition of the EVA resin or SBR resin improves the ductility between the concrete fillers to increase the shock absorption, bending strain, and excellent adhesion to improve the bonding strength between the fillers of the concrete to improve the tensile strength.

The EVA resin or SBR resin improves the material separation resistance of the concrete which is not hardened by the viscous property, improves the adhesion performance after curing, and improves the wear resistance as the mixing ratio increases, and the polymer (EVA, SBR) solid content is increased. Filled in the pores of the concrete to form a film film to enhance the watertightness and suppress the occurrence of cracks and to improve the warpage, tensile strength and the elastic properties of the concrete.

The EVA resin or SBR resin acts as a binder in the curing process to increase adhesion, mortar wear resistance and flexibility, and when the blended water is dissipated by the hydration reaction of cement, the polymer (EVA, SBR) solids are filled in the pores of the concrete to form a film film. It improves the watertightness by forming, and has the effect of suppressing the occurrence of cracks, improving the filling microcrack, and adding to the concrete at the glass transition temperature (Tg) (-45 ~ 55 ℃), The risk of cracking and breakage is significantly reduced due to the reduction of compressive and bending strains.

The EVA resin or SBR resin does not exhibit the function of the polymer (EVA, SBR) when the solid content is small when 20% by weight or less, based on the total weight of the liquid material for fast curing ground stabilized ground stabilizer, has the disadvantage of existing concrete This is not lost, only the price is increased, and when added more than 25% by weight of solids with a high molecular weight, the viscosity rises, the dispersing force is a phenomenon of occurrence of poor deterioration occurs, the elasticity of the concrete is increased, but the compressive strength is lowered.

The antifoaming agent in the liquid base material for fast curing ground stabilization for the wet base surface is used to remove harmful bubbles, generally oily substances having low volatility and high diffusivity, or water-soluble surfactants are used, and the antifoaming action breaks bubbles. There is a function to suppress bubbles.

When the antifoaming agent is added 1 wt% or less based on the total weight of the fastening ground stabilized liquid for the base material of the wet base surface, it does not exhibit the function of removing bubbles in the concrete, and the durability of the concrete decreases due to the reduction of the compressive strength and the ductility of the concrete. It is a product of the high price, causing the price rise, excessive ductility, there is a problem that the condensation, curing phenomenon is significantly delayed.

The plasticizer of the fast curing ground-stabilizing liquid for wet ground surface is naphthalene oil in process oil. Select one of paraffin oil and regenerated oil, and when 10 wt% or less is added, the flexural strength of concrete decreases due to the decrease in ductility and adhesion imparting function of concrete, easily breaks when impact or external low temperature, and cracks increase. When more than 20% by weight is added, the compressive strength of concrete decreases due to the decrease in the bonding strength between the fillers in the concrete due to excessive addition.

The preservative among the fastening ground stabilized liquid material for the wet ground surface, as a medicine used to prevent wood decay, because the bundling occurs due to the propagation of wood decay fungus, but it can be used to poison the growth, but actually humans or livestock It is considerably limited to side effects, odor, metal corrosion, flammability, handling difficulty, and the like.

Therefore, the preservatives are water-soluble or fat-soluble preservatives, bar water-soluble preservatives are rare when using a single drug, mixed with several kinds to prevent insoluble in the wood to melt by rain, etc., and also prevent metal corrosion Examples thereof include zinc chloride, arsenic acid (or sodium salt), mercury chloride, copper sulfate, sodium fluoride, arsenic compounds, dinitrophenol or cresol, pentachlorophenol, and the fat-soluble preservative includes creosote oil.

When adding 0.3% by weight or less of the preventive member in the above-mentioned wet ground surface stabilized ground stabilized liquid material, the parasitic bacteria cannot be cut down on wood contacted with concrete, and when 0.7% by weight or more is added, the price is increased due to the excessive amount, It doesn't get much better, so it's less efficient.

Silica sol (Silica Sol) of the fast curing ground-stable liquid material for the wet base surface is used as a binder of colloids, paints, etc. in which fine particles of silicic acid (SiO ₂ · nH ₂ O) is dispersed in a dispersion medium such as water, When 10 wt% or less of silica sol is added to the surface hardening ground stable liquid material, the dispersing force is improved, and the cohesion between each filler in concrete is weakened. A phenomenon that the strength is lowered occurs.

CNT (carbon nanotube, carbon nanotube) of the fast curing ground-stable liquid material for the wet base surface is an allotrope of carbon having a cylindrical nano-structure, the ratio of length and diameter is made to 132,000,000: 1, which is to date It is the highest known material, and carbon nanotubes have many unique properties, which can be useful in various fields such as nanotechnology, electrical engineering, optical and materials engineering.

In particular, the thermal conductivity and mechanical and electrical properties are very specific, and has been applied as an additive of various structural materials. For example, small amounts of carbon nanotubes may be added to baseball bats (usually made of carbon fiber), golf clubs, automotive parts, and Damascus steel.

When 5 wt% or less of CNT (carbon nanotube) is added among the above-mentioned wet base surface fastening ground stabilized liquid materials, the bonding strength and elastic modulus between the fillers in concrete are lowered, and thus, they do not function properly. The addition of more than% causes a problem that the price rises due to the high price, excessive use lowers the modulus of elasticity.

The wet base material for fast curing ground stabilized base material is 15 ~ 45% by weight of acrylic resin and 20 ~ 25% by weight of EVA resin (Ethylene-Vinyl acetate copolymer) or SBR (Styrene Butadiene Rubber) resin to kneader After a 40-minute mixing step A, after performing the step A, 10 to 20% by weight of a plasticizer is added to the kneader (B kneader) and then mixed for 20 minutes to perform a step B, the B step carried out After adding the antifoaming agent 1 ~ 5% by weight to the kneader and then mixing for 20 minutes, the step C after the step C, after performing the step C 10 ~ 20 weight of silica sol (Silica Sol) in the kneader %, Preservative 0.3 ~ 0.7% by weight, CNT (Carbon nanotube) 5 to 18% by weight after the addition of the second step of mixing for 2 hours to prepare a wet curing surface stabilizer base material liquid.

The present invention can prepare a wet curing surface stabilizer base stabilizer by mixing the wet base surface hardening ground stabilizer powder material and liquid material in a 2: 1% by weight ratio in the field, wherein, the specific gravity of the base stabilizer The silver is preferably about 1.55, and the base stabilizer prepared as described above is applied at 1.55 kg / m 2 or more after the base surface is cleared.

The base stabilizer according to the present invention is a fast curing base stabilizer prepared to be attached to the base surface in a damp state as a moisture stabilizer made of organic materials and inorganic materials.

The base stabilizer according to the present invention has an economic benefit that can secure the necessary thickness by only one application, and reacts with moisture on the surface of the adherent to achieve early adhesion, thereby exhibiting strong adhesion to the surface of the adherend, and excellent water-tightness at the bottom of the surface to be adhered. Blocking the gas generated, as well as blocking the penetration of moisture enables the work of attaching the waterproof sheet on the top after application, and has the advantage of achieving rapid construction even in the wet state.

Claims (6)

25 to 50 wt% cement, 2 to 7 wt% gypsum, 35 to 60 wt% silica sand, 2 to 10 wt% slaked lime, 4 to 12 wt% fast cement, 1 to 3 wt% dispersant, 0.5 to 1 wt %, Methyl cellulose 0.5 to 1% by weight, cellulose fiber 0.5 to 1% by weight, acrylic resin 15 to 45% by weight, EVA resin (Ethylene-Vinyl acetate copolymer) or SBR (Styrene Butadiene Rubber) resin 20 ~ 25% by weight, defoamer 1-5% by weight, plasticizer 10-20% by weight, preservative 0.3-0.7% by weight, silica sol (Silica Sol) 10-20% by weight, CNT (Carbon nanotube) 5-18% by weight A fast curing base stabilizer for wet base surfaces, characterized in that the ash is mixed by a 2: 1 weight ratio.
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