KR101066298B1 - Fire-proof self leveling flooring composite - Google Patents

Abstract

The present invention relates to an inorganic nonflammable self-leveling flooring composition, wherein the main material and water are mixed in a weight ratio of 1:0.2 to 0.215, and the main material is 25 to 28 parts by weight of general Portland cement, 5 to 10 parts by weight of alumina cement parts, anhydrite 8-11 parts by weight, fine aggregate 43-47 parts by weight, inorganic filler 5-8 parts by weight, antifoaming agent 0.1-2 parts by weight, thickener 0.001-0.2 parts by weight, curing accelerator 0.001-0.04 parts by weight, fluidizing agent 0.01 It provides an inorganic nonflammable self-leveling flooring composition comprising -0.5 parts by weight, 0.01 to 0.3 parts by weight of a setting retarder, and 1 to 5 parts by weight of a polymer synthetic resin.
In addition, a base layer formed by applying a primer composed of an acrylic copolymer emulsion that penetrates into the concrete base to which the flooring material is to be applied and forms a polymer film on the surface, and the primer on the upper portion of claim 1 It also provides a self-leveling flooring comprising a mortar layer formed by applying the inorganic non-combustible self-leveling flooring composition and a coating layer formed by coating an inorganic coating material thereon after the inorganic non-combustible self-leveling flooring composition is cured.

Description

Inorganic non-flammable self-leveling flooring composition {Fire-proof self leveling flooring composite}

The present invention relates to an inorganic non-combustible self-leveling flooring composition.

In a modern society with advanced industries, the scale of all industrial fields is increasing, and the scale of construction is increasing accordingly. Building materials used for construction are economical at the time of manufacture and high-tech materials that are easy to construct have been developed, resulting in mass production and mass consumption. is being done at the same time. This development of architectural culture has brought about epochal changes to people's residential life.

In general, cement mortar is poured with a predetermined thickness on the parking lot floor of apartments, hotels, officetels, large discount stores, etc. Flooring using organic binder is installed.

However, in the conventional flooring construction as described above, since an organic binder is used, it is harmful to the human body, and there is a problem in that the occurrence of human accidents and fire damage are maximized by generating toxic gas in case of fire.

In addition, the coating layer using the organic binder has a short lifespan and requires frequent repair work, and when partial damage occurs, not only the aesthetics is impaired, but also there are various problems such as rags caused by the repair work.

The present invention has been devised to solve the above problems, and it is intended to provide an inorganic non-combustible self-leveling flooring composition having excellent fire safety as a non-combustible material and excellent bonding strength with base concrete using a material of the same quality as concrete.

In addition, it has excellent self-leveling properties, which makes construction very simple, and has excellent abrasion resistance, which results in little wear even after long-term use. An object of the present invention is to provide a self-leveling flooring composition.

The present invention is a composition prepared by mixing the main material and water in a weight ratio of 1:0.2 to 0.215, wherein the main material is 25 to 28 parts by weight of general Portland cement, 5 to 10 parts by weight of alumina cement, 8 to 11 parts by weight of anhydrite, 43 to 47 parts by weight of fine aggregate, 5 to 8 parts by weight of inorganic filler, 0.1 to 2 parts by weight of antifoaming agent, 0.001 to 0.2 parts by weight of thickener, 0.001 to 0.04 parts by weight of curing accelerator, 0.01 to 0.5 parts by weight of fluidizing agent, 0.01 to setting retardant It provides an inorganic nonflammable self-leveling flooring composition comprising 0.3 parts by weight, 1 to 5 parts by weight of a polymer synthetic resin.

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Furthermore, the present invention relates to a base layer formed by applying a primer composed of an acrylic copolymer emulsion that penetrates into the concrete base to which the flooring is to be applied and forms a polymer film on the surface, and the primer on the upper part of the present invention. It provides a self-leveling flooring comprising a mortar layer formed by applying the inorganic non-combustible self-leveling flooring composition according to the present invention and a coating layer formed by coating an inorganic coating material thereon after the inorganic non-combustible self-leveling flooring composition is cured.

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The present invention provides an inorganic non-combustible self-leveling flooring material having excellent fire safety as a non-combustible material and excellent bonding strength with base concrete using a material of the same quality as concrete.

In addition, it has excellent self-leveling properties, which makes construction very simple, and has excellent abrasion resistance, which results in little wear even after long-term use. We offer self-leveling flooring.

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Hereinafter, preferred embodiments according to the present invention will be described in detail. Prior to this, the terms or words used in the present specification and claims should not be construed in their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. Based on the principle that can be, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Therefore, the configuration described in the embodiment described in this specification is only the most preferred embodiment of the present invention and does not represent all of the technical idea of the present invention. It should be understood that there may be examples.

In general, the floor of a parking lot of an apartment, hotel, officetel, large discount store, etc., or a floor of a factory, office, laboratory, hospital, or public building is poured with cement mortar to a predetermined thickness, and it relates to a flooring installed thereon. It has suitability for imparting excellent performance and effect to conventional mortar flooring, which is a field of application.

The inorganic non-combustible self-leveling flooring composition according to the present invention is a non-combustible material and has excellent fire safety and excellent bonding strength with the base concrete by using the same material as the concrete. In addition, it has excellent self-leveling properties, so it is very easy to install, and has excellent wear resistance, so there is little wear even after long-term use. It is possible to solve the disadvantages of the flooring composition.

The inorganic nonflammable self-leveling flooring composition corresponds to a composition prepared by mixing the main material and water in a weight ratio of 1:0.2 to 0.3. In general, the pre-mixed main material can be mixed with water on site to complete the flooring composition, and then poured after applying a primer to the upper surface of the concrete.

That is, a composition prepared by mixing the main material and water in a weight ratio of 1:0.2-0.3, and the main material is 20-40 parts by weight of general Portland cement, 5-10 parts by weight of alumina cement, 5-12 parts by weight of anhydrite, fine aggregate 40 to 50 parts by weight, 0.1 to 10 parts by weight of an inorganic filler, and 0.2 to 14 parts by weight of an additive may be included.

Here, the additive is 0.1 to 2 parts by weight of an antifoaming agent, 0.001 to 0.2 parts by weight of a thickener, 0.001 to 0.3 parts by weight of a curing accelerator, 0.01 to 0.5 parts by weight of a fluidizer, 0.01 to 0.3 parts by weight of a setting retarder, 0.1 to 10 parts by weight of a polymer synthetic resin It may contain parts by weight.

The general Portland cement refers to cement generally used in construction sites, and is usually referred to as cement. General Portland cement means cement that does not have special functions such as crude steel and low heat.

The alumina cement is a molten material such as alumina, quicklime CaO, silicic anhydride, etc. as a main component, and CaO·Al ₂ O3 and 5CaO·3Al ₂ O ₃ are the main minerals, and the alumina component is considerably higher than that of Portland cement. It is mixed with limestone, bauxite or alumina-rich clays such as alumina shale, melted at 1,500~1,600℃, drained, cooled, and then fine powder. Portland cement, which is currently generally used, is easily eroded by sulfate ions, so it was developed as a result of research to eliminate this defect. It is a crude steel cement with a short time from mixing with water to hardening, and is used for construction in cold climates or for urgent construction. Corrosion resistance and fire resistance are also superior to Portland cement, so it is sometimes used as a breakwater in ports, dairy buildings, etc. is used for However, because of its high cost, it is not usually used, and is only used in special cases. In the present invention, CaO and Al ₂ O ₃ composition in a ratio of 35:55 may be used.

The anhydrite (無水石膏) is a chemical component of CaSO ₄ , and can be usually formed in a bulk (塊狀), fibrous form, granular (粒狀) and the like. The cleavage intersects each other at right angles and is complete in three directions, and the crystals are few, but crystalline ones can form cube cleavages. It has a hardness of 3 to 3.5 and a specific gravity of 2.9, and may be white, sometimes gray, or blue, purple, or pink. It is transparent or translucent, and the streak color is white, glassy or pearly, soluble in hydrochloric acid, and when water is absorbed, it becomes gypsum. When heated, it melts at 1,450 °C. It is produced on a large scale in salt deposits and gypsum deposits formed by evaporation of salt lakes.

The fine aggregate means a fine aggregate used for plastering, and may mean a size that normally passes through a 2.5mm sieve.

As the filler, fine powder such as calcium carbonate (CaCO ₃ ) and slag powder may be used as an extender.

The antifoaming agent is an additive that prevents or removes the foaming from the composition. If there are bubbles in the flooring composition, there is a problem in durability, so an antifoaming agent is used in the mixing process of the flooring to minimize the bubbles remaining in the composition. Antifoaming agents include esters, mineral oils, fatty acids, alcohols, amides, and silicones, and can be used alone or in combination.

The thickening agent (thickening agent, 增粘劑) is to improve the workability by preventing material separation of materials by increasing the viscosity, Hydroxy Propyl Methyl Cellulose (HPMC), Hydroxy Ethyl Methyl Cellulose (HEMC), Hydroxy Ethyl Cellulose (HEC) may be used alone or in combination.

The curing accelerator is added to promote the hydration reaction of the flooring composition to express early strength. As the curing accelerator, potassium sulfate, calcium chloride, calcium nitrate, magnesium chloride, potassium hydroxide, sodium hydroxide, sodium carbonate, lithium carbonate, etc. may be used alone or in combination.

The fluidizing agent (superplasticizer) is an admixture for improving workability and strength by reducing the unit quantity of the flooring composition. The fluidizing agent has the effect of improving workability and strength by reducing the unit amount, but material separation may occur when excessively added. As the fluidizing agent, melamine-based, naphthaline-based, polycarboxylic acid-based, or lignin-based agents may be used alone or in combination.

The setting retardant is an admixture for controlling the hardening of the flooring composition, which delays the hydration reaction of cement to suppress slump loss during transport and pouring, temperature cracks and cold joints due to heat of hydration. As the setting retarder, inorganic setting retarders such as natural gypsum and magnesium fluoride and organic water-reducing retarders such as citric acid, formic acid, tartaric acid, lignin, and oxycal may be used.

The polymer synthetic resin is an admixture for improving the durability of the flooring material by preventing the floating phenomenon of the flooring material due to the difference in impact, contraction, and expansion coefficients from changes in the external environment, and imparting flexibility and abrasion resistance. As a kind of polymer synthetic resin applicable to mortar, monomers such as Vinylacetate, Vinylversatate, Vinylchloride, Butylacrylate, and copolymers and terpolymers in which these are combined can be used.

Flow value (mm), setting time (min), flexural strength (N/mm ² ), compressive strength (N/mm ² ), adhesion strength (N/mm ² ), Impact resistance, length change rate (%), and abrasion resistance (mg/mm ² ) were performed in accordance with KS F 4041: 2004 and provided in [Table 2] to KS F 4041 self-horizontal mortar (self) provided in [Table 1]. leveling mortar) quality standard was proved to prove its performance.

[Table 1] Self-leveling mortar quality standard (KS F 4041)

[Table 2] Performance test results according to KS F 4041: 2004 (self-test)

[Table 3] Compounding amount used in the performance test according to KS F 4041: 2004

As shown in [Table 1] to [Table 3], the inorganic nonflammable self-leveling flooring composition (mortar) according to the present invention meets the self-leveling mortar quality standard (KS F 4041).

In order to confirm the performance of the inorganic nonflammable self-leveling flooring composition (mortar) according to the present invention, a performance test was conducted by constructing a flooring composition composed of a contrasting mixing ratio.

<Control Example 1>

<Control Example 2>

<Control Example 3>

<Control Example 4>

<Control Example 5>

<Control Example 6>

In the case of Comparative Example 1, the antifoaming agent was added at a weight ratio of 0.05, which was less than the content in the composition ratio of the inorganic nonflammable self-leveling flooring composition according to the present invention, and as a result of two or more tests, surface peeling occurred in the impact resistance test, In the length change test, it showed an expansion of 0.08~1%, exceeding the standard, and in the abrasion resistance test, it showed a value of ^{0.15~0.17mg/mm 2 which was below the standard.}

Next, in the case of Comparative Example 2, in the composition ratio of the inorganic nonflammable self-leveling flooring composition, anhydrite was added in a weight ratio of 14.1 weight ratio exceeding the content, and an antifoaming agent was added in a weight ratio of 0.05 weight ratio below the content, and as a result of two or more tests, impact resistance Surface peeling occurred in the test, expansion of 0.07~0.12% exceeded the standard in the length change test, and ^{the value of 0.16~0.17mg/mm 2} was below the standard in the abrasion resistance test, and the final setting time was the standard. It took 17 to 18 hours, which exceeded the

In addition, in the case of Control Example 3, the composition ratio of the inorganic nonflammable self-leveling flooring composition corresponds to adding anhydrite in a weight ratio exceeding the content of 13.93, and as a result of two or more tests, cracks occurred in the impact resistance test, and the length changed In the test, it showed an expansion of 0.08~0.09%, exceeding the standard, and in the abrasion resistance test, ^{it showed a value of 0.16~0.17mg/mm 2} which was below the standard, and the flow value was 170~180mm, which was below the standard, and the flexural strength. , compressive strength, and adhesion strength were 5.5-5.7, 25-26, and 0.9-1.1 N/mm ² , respectively, indicating that it was less than the standard strength.

In addition, in the case of Control Example 4, in the composition ratio of the inorganic non-flammable self-leveling flooring composition, the antifoaming agent was added in a 0.05 weight ratio that was insufficient, the thickener was used in a 0.22 weight ratio that exceeded the content, and the retarder was used in a 0.008 weight ratio that was less than the content, and the polymer synthetic resin was not used. It corresponds to the addition, and as a result of two or more tests, the flow value was 160~170mm, which was below the standard, and the flexural strength was 4.0~5.0 N/mm ² , which did not meet the standard, and surface peeling occurred in the impact resistance test, In the abrasion resistance test, ^{it showed a value of 0.17-0.18 mg/mm 2} that was below the standard, and it was found that the initial setting time was 30-40 minutes, which was less than the standard.

In addition, in the case of Control Example 5, in the composition ratio of the inorganic nonflammable self-leveling flooring composition, anhydrite was added in a weight ratio of 15.5 weight ratio exceeding the content, a fluidizer in a weight ratio of 0.55 weight ratio exceeding the content, and a retarder in a weight ratio of 0.35 weight ratio exceeding the content. As a result of two or more tests, surface peeling occurred in the impact resistance test, and expansion of 0.09 to 0.12 % exceeded the standard in the length change test. It showed a value of ~0.22 mg/mm ² , and it was found that the final setting time was 18 to 19 hours exceeding the standard.

In addition, in the case of Comparative Example 6, cement in the composition ratio of the inorganic non-combustible self-leveling flooring composition was added in a weight ratio of 17.8 weight ratio, which was less than the content, and a polymer synthetic resin was added in a weight ratio of 11 weight ratio, which is more than the content. As a result of two or more tests, the impact resistance Cracking occurred in the test, and the abrasion resistance test ^{showed a value of 0.22 to 0.23 mg/mm 2} that was below the standard, and the flow value was 160 to 170 mm that did not meet the standard, and the flexural strength, compressive strength and adhesion strength were respectively 3.0~3.5, 12~14, 0.4~0.5 N/mm ^{2 did} not meet the standard strength, and it was found that the termination time required 20~21 hours exceeding the standard.

Since the inorganic non-combustible self-leveling flooring composition (mortar) according to the present invention meets the standards of non-combustible materials, it is possible to compensate for the disadvantage that conventional flooring materials are vulnerable to fire and emit toxic gas.

The inorganic nonflammable self-leveling flooring composition (mortar) according to the present invention is an eco-friendly product and does not harm the environment, so it can be used with confidence.

Next, a flooring prepared using the inorganic nonflammable self-leveling flooring composition (mortar) according to the present invention and a construction method thereof will be described.

The self-leveling flooring material according to the present invention includes a base layer formed by applying a primer that penetrates into a concrete base to which the flooring material is to be applied and forms a polymer film on the surface thereof, and the inorganic nonflammable self-leveling flooring composition according to the present invention on the primer top The mortar layer formed by this application and the inorganic non-combustible self-leveling flooring composition are cured, and then the coating layer is formed by coating the inorganic coating material thereon.

The primer used for the base layer may be an acrylic copolymer emulsion. The primer is an ester emulsion, which is constructed for the purpose of improving the adhesion performance of the mortar surface. It has strong adhesion to almost all adherends, and blocks the penetration of water by enclosing the cement particles with a polymer compound. It has elasticity to withstand the movement of the underlying base, so it has good stretch strength and impact resistance, and excellent chemical resistance such as alkali resistance, thus preventing damage to the mortar surface.

That is, the primer has an effect of increasing strength by penetrating into the concrete base surface, and also has an effect of increasing adhesion with the mortar layer applied on the top of the concrete base surface. In addition, when the floor surface is concrete, a large number of voids are substantially present and flow may decrease or bubbles may occur during the application of the inorganic nonflammable self-leveling flooring composition. In order to prevent this, after forming the base layer, the By forming a mortar layer on the upper part, it is possible to prevent a decrease in flow or generation of bubbles. That is, the primer applied to the base layer not only penetrates into the concrete underside, but also forms a polymer film on the concrete effective surface to relieve stress generated at the bonding interface, thereby preventing the flow from being deteriorated.

The inorganic nonflammable self-leveling flooring composition applied as the mortar layer corresponds to a composition prepared by mixing the main material and water in a weight ratio of 1:0.2 to 0.3. In general, the pre-mixed main material can be mixed with water on site to complete the flooring composition, and then poured after applying a primer to the upper surface of the concrete. That is, a composition prepared by mixing the main material and water in a weight ratio of 1:0.2-0.3, and the main material is 20-40 parts by weight of general Portland cement, 5-10 parts by weight of alumina cement, 5-12 parts by weight of anhydrite, fine aggregate 40 to 50 parts by weight, 0.1 to 10 parts by weight of an inorganic filler, and 0.2 to 14 parts by weight of an additive may be included. Here, the additive is 0.1 to 2 parts by weight of an antifoaming agent, 0.001 to 0.2 parts by weight of a thickener, 0.001 to 0.3 parts by weight of a curing accelerator, 0.01 to 0.5 parts by weight of a fluidizer, 0.01 to 0.3 parts by weight of a setting retarder, 0.1 to 10 parts by weight of a polymer synthetic resin It may contain parts by weight.

The inorganic nonflammable self-leveling flooring composition applied as a mortar layer is used after mixing the main material and water at the site. It forms a high-level finish surface with self-leveling (auto-leveling) mortar, and the crude steel type has a fast curing speed after construction. Next-day transit may be possible. In addition, due to non-shrinkage, there is no shrinkage or expansion due to temperature change, so there is no self-cracking. It is a non-combustible material, so there is no ignition and gas hazard problem, so it does not emit harmful gas even in the event of fire, etc. In addition, there may be less noise when the vehicle is moving.

The inorganic coating material may correspond to a material for coating the upper portion of the mortar layer using various inorganic additives or nonflammable ceramic resins. Usually, it is a compound of acrylic resin and polyisocyanate, and it is applied by a spray method for the purpose of protecting the mortar layer and improving the aesthetics. After drying and curing, a coating film with excellent performance such as stain resistance, abrasion resistance, adhesion, and gloss is formed. In addition, it is integrally combined with the mortar layer to improve functions such as durability, chemical resistance, corrosion resistance, and abrasion resistance, and the inorganic coating material itself corresponds to a non-combustible material, so that it can be excellent in fire safety. In addition, there may be a function of preventing moisture from entering the interior while discharging internal moisture to the surface due to excellent breathability and waterproofing effect.

The construction of the self-leveling flooring material according to the present invention largely comprises the steps of treating the concrete base surface, applying a primer to form a base layer, applying an inorganic non-combustible self-leveling flooring composition on top of the base layer to form a mortar layer, curing the mortar layer, and inorganic coating material It may be configured to include a coating layer forming step by applying.

The concrete subsurface treatment step is a step of treating the concrete surface on which the flooring material is to be constructed, and is a step of removing contaminants, dust, etc. present on the concrete surface in various ways.

The base layer forming step is a step of applying a primer to the concrete base surface to penetrate the concrete base to which the flooring material is to be applied, and forming a polymer film on the surface. In general, the formation of the base layer includes a step of first applying with a 3-fold dilution of the primer, drying the first coating solution, a second application with a 2-fold dilution of the primer, and drying the second coating solution. can proceed. Here, the primer is different depending on the condition of the concrete substrate, but in general, 100 to 120 m ² per 18 liters can be applied.

The mortar layer forming step is a step of applying an inorganic nonflammable self-leveling flooring composition on top of the primer, and in the field, the main material and water are mixed in a weight ratio of 1:0.2 to 0.3 to form a thickness of 3 to 5 mm. At the time of pouring, in order to facilitate self-leveling of the inorganic non-combustible self-leveling flooring composition, a leveling operation may be performed with a spike crawler. The mortar layer can be cured for at least 3 days in summer and at least 7 days in winter, although there are differences depending on the site after the flooring composition is applied. Since the inorganic nonflammable self-leveling flooring composition ^{takes 1.78 kg per unit area (m 2} ) and unit thickness (mm), about 5.4 to 8.9 kg per ^{unit area (m 2} ) is required when pouring with a thickness of 3 to 5 mm. can

The coating layer forming step is a step of coating the inorganic coating material on the inorganic non-combustible self-leveling flooring composition after curing, and may be evenly applied with a spray, roller, brush, or the like. The inorganic coating material can be applied with 20 liters of 80-100 m ^{2 .}

As described above, although the present invention has been described by way of limited embodiments, the present invention is not limited thereto and will be described below with the technical spirit of the present invention by those of ordinary skill in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims.

Claims (5)

A composition prepared by mixing the main material and water in a weight ratio of 1:0.2 to 0.215,
The main material is 25 to 28 parts by weight of general Portland cement, 5 to 10 parts by weight of alumina cement, 8 to 11 parts by weight of anhydrite, 43 to 47 parts by weight of fine aggregate, 5 to 8 parts by weight of inorganic filler, 0.1 to 2 parts by weight of antifoaming agent, Containing 0.001 to 0.2 parts by weight of a thickener, 0.001 to 0.04 parts by weight of a curing accelerator, 0.01 to 0.5 parts by weight of a fluidizing agent, 0.01 to 0.3 parts by weight of a setting retarder, 1 to 5 parts by weight of a polymer synthetic resin,
Inorganic non-combustible self-leveling flooring composition.
delete delete a base layer formed by applying a primer composed of an acrylic copolymer emulsion that penetrates into the concrete base to which the flooring is to be applied and forms a polymer film on the surface;
a mortar layer formed by applying the inorganic nonflammable self-leveling flooring composition of claim 1 on the primer; and
a coating layer formed by coating an inorganic coating material on the inorganic non-flammable self-leveling flooring composition after curing;
Self-leveling flooring comprising.
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