KR101789991B1 - Two component typed spray coating waterproofing membrane composition and manufacturing method thereof using slag - Google Patents

Abstract

According to the present invention, there is provided a car spraying membrane composition comprising 80 to 98% by weight of a polymer, 1 to 10% by weight of a dispersant, 0.1 to 5% by weight of an oxidative stabilizer, 0.1 to 5% by weight of a viscosity modifier and 0.1 to 5% A liquid polymer admixture; A slurry of 0.1 to 1% by weight, a retarder of 0.1 to 1% by weight, a defoaming agent of 10 to 20% by weight, a defoaming agent of 20 to 40% by weight, a calcium carbonate of 40 to 60% by weight, calcium sulfoaluminate of 10 to 20% 0.1 to 1% by weight, and 0.1 to 1% by weight of a synthetic fiber, based on the total weight of the slag.
According to the present invention, according to the present invention, the curing time is short and the bonding strength is strong, thereby preventing rebound and falling of the material.

Description

TECHNICAL FIELD [0001] The present invention relates to a two-component bicarbonate flame-spraying membrane composition using a slag, and a method for producing the flame-

The present invention relates to a two-component spray-applied flame-retardant membrane composition using slag and a method for producing the same, and more particularly to a composition for use in a complex underground structure (a large-sized tunnel and a cavity, And to a method for manufacturing the two-component water-repellent spray membrane using slag containing a liquid polymer admixture and a powder admixture capable of minimizing the environmental pollutants by minimizing the problems of soil submersion related to by- .

Overhead and waterproofing works for underground structures are included in the most basic of the measures for prolonging the design life of the structure beyond the viewpoint of improving the safety and structural function of the structure.

In addition, ordering minimizes the maintenance cost due to the deterioration of the structure and allows the structure to function fully during the design life.

In addition, in order to continuously develop and build a recycling society, it is becoming a very important issue to integrate with production technology by promoting the development of technologies necessary for environmental conservation and resource conservation, along with the construction of buildings.

From this point of view, effective alternatives are needed to utilize the industrialization byproducts and industrial waste recycling technologies, which are included in the main technology category for environmental protection, in underground structures and important infrastructure.

Conventionally, a watertight shotcrete or a waterproof membrane has been used for the construction of an underground structure.

Watertight shotcrete can only be applied to waterproof and durable materials or laboratory-level subdivisions, but high construction costs must be incurred for large-scale applications. Therefore, it can not be used as a realistic order material.

Since the sheet waterproof membrane made of PVC material is constructed after the installation of the concrete lining, it is difficult to perform a re-work to check leakage of the internal waterproof membrane or to prevent it from origin.

In addition, since the sheet waterproof membrane serves to separate the shotcrete lining as a support material and the concrete lining as a structure, there is a problem that it is impossible to utilize a shotcrete lining and a concrete lining as a composite material.

Therefore, it is necessary to study the spray waterproofing material which is high in adhesion and durability, easy to construct, and able to function as a support material.

Disclosure of the Invention The present invention has been made in order to minimize the problems of the underground structure related to the underground structure and the ground subsidence associated with the above-mentioned underground structures and to reduce the environmental pollution due to the recycling of by-products and wastes. The object of the present invention is to reduce the amount of pouring even under poor ground conditions Which is capable of improving the workability and economic efficiency of tunnel construction, and a method for manufacturing the same.

Another object of the present invention is to provide a bacterium-containing car spraying membrane composition using a slag which is short in curing time and strong in adhesion strength to prevent rebound and dropping of a material, and a method for manufacturing the same.

It is still another object of the present invention to provide a flame-retardant spray-applied membrane composition using a slag capable of improving the workability by minimizing dust and rebound amount during construction and a method for manufacturing the same.

Another object of the present invention is to provide a bacterium-based car spraying membrane composition using a slag which plays a role as a car wash capable of coping with a groundwater leakage problem and is highly resistant to salting in a submarine tunnel, and a method for manufacturing the same .

Another object of the present invention is to provide a blast furnace spraying membrane composition using a slag capable of minimizing environmental pollution by producing a sprayed membrane composition for use in the construction of a structure using slag as an industrial waste and a method for manufacturing the same have.

According to one aspect of the present invention there is provided a car spraying membrane composition comprising 80 to 98% by weight of a polymer, 1 to 10% by weight of a dispersant, 0.1 to 5% by weight of an oxidative stabilizer, 0.1 to 5% by weight of a viscosity modifier, % Of a liquid polymer admixture; A slurry of 0.1 to 1% by weight, a retarder of 0.1 to 1% by weight, a defoaming agent of 10 to 20% by weight, a defoaming agent of 20 to 40% by weight, a calcium carbonate of 40 to 60% by weight, calcium sulfoaluminate of 10 to 20% 0.1 to 1% by weight, and 0.1 to 1% by weight of a synthetic fiber, based on the total weight of the slag.

In this case, the weight ratio of the liquid polymer admixture to the powder admixture may be 1: 0.3-0.5.

Also, the polymer may be an ethylene vinyl acetate copolymer or a polyvinyl acetate (PVAc) latex.

Also, the composition may be a composition wherein the dispersing agent is polyether, the oxidizing stabilizer is bibuthyl hydroxy toluene (BHT), the viscosity controlling agent is HPMC (hydroxy propyl methyl cellulose), and the crosslinking agent is borax.

The high purity alumina cement may be a composition having an Al ₂ O ₃ content of 68.5% by weight or more.

Further, the fineness of the slag is ^{4,000cm 2 / g ~ 8,000cm 2 /} g, there is a content of the CaO-F may be a composition, characterized in that 1 wt% or less.

In addition, the accelerator may be calcium formate or lithium carbonate, the retarder may be citric acid or tartaric acid, and the synthetic fiber may be 10 to 20 탆 in diameter and 6 to 18 mm in length .

According to another aspect of the present invention, there is provided a process for preparing a polymer composition comprising (1) 80 to 98% by weight of a polymer, 1 to 10% by weight of a dispersant, 0.1 to 5% by weight of an oxidative stabilizer, 0.1 to 5% by weight of a resveratrol and 0.1 to 5% by weight of a crosslinking agent to prepare a liquid polymer admixture; And (2) 20 to 39 wt% of high purity alumina cement, 40 to 60 wt% of calcium carbonate, 10 to 20 wt% of calcium sulfoaluminate, 5 to 20 wt% of slag, 0.1 to 1 wt% of accelerator, By weight, 0.1 to 1% by weight of an antifoaming agent and 0.1 to 1% by weight of a synthetic fiber, and mixing the mixture at 50 to 100 rpm for 10 to 20 minutes to prepare a powder admixture. A method of making a composition is provided.

According to the present invention, it is possible to improve the workability and economical efficiency of tunnel construction by reducing the amount of plowing even under poor ground conditions.

According to the present invention, there is an effect that the curing time is short and the bonding strength is strong, so that the rebound and the fall-off of the material can be prevented.

According to the present invention, the amount of dust and rebound can be minimized at the time of construction, and the workability can be improved.

According to the present invention, it plays a role as a water supply material capable of coping with a problem of underground water leakage, and also has a high resistance to salt corrosion in a submarine tunnel.

Industrial Applicability According to the present invention, it is possible to minimize environmental pollution by manufacturing a sprayed membrane composition used for the construction of a structure by using slag, which is an industrial waste.

According to the present invention, an excellent long-term strength is exhibited as compared with a general sparkling material.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a graph showing the results of testing physical properties of Example 1, Example 2, and Comparative Example by applying the composition to a specimen. FIG.
2 is a flow chart showing a process for producing a liquid polymer admixture of the present invention.
3 is a flowchart showing a process for producing a powdered admixture of the present invention.
4 is a view showing the liquid polymer admixture and the powder admixture of the present invention.

As used herein, the terms first, second, and so on are merely reference numerals for distinguishing between identical or corresponding components, and the same or corresponding components are defined by terms such as first, second, etc. no.

In addition, the term " coupled " does not mean that only a physical contact is directly made between the respective components in the contact relationship between the respective components, but a different structure is interposed between the respective components, The concept of "

The name of the composition used in the description of the present invention is IUPAC (International Union of Pure and Allied Chemistry) names.

The present invention relates to a liquid polymer admixture comprising 80 to 98% by weight of a polymer, 1 to 10% by weight of a dispersant, 0.1 to 5% by weight of an oxidizer, 0.1 to 5% by weight of a viscosity modifier and 0.1 to 5% By weight of calcium carbonate, 10 to 20% by weight of calcium sulfoaluminate, 5 to 20% by weight of slag, 0.1 to 1% by weight of accelerator, 0.1 to 1% by weight of retarder, 0.1 to 1% by weight of defoamer % Of a synthetic fiber, and 0.1 to 1% by weight of a synthetic fiber.

The weight ratio of the liquid polymer admixture to the powder admixture is preferably in the range of 1: 0.3 to 0.5. The blend ratio of the liquid polymer admixture to the powder admixture is preferably in the range of 1: 0.3 to 0.5.

The polymer means a high molecular weight compound containing a large number of repeating units in the structure, and is preferably an ethylene vinyl acetate copolymer or a polyvinyl acetate (PVAc) latex, for example.

Preferably, the dispersing agent is polyether, the oxidizing stabilizer is bibuthyl hydroxy toluene (BHT), the viscosity controlling agent is HPMC (hydroxy propyl methyl cellulose), and the crosslinking agent is borax.

BHT is a phenolic antioxidant and is contained in the composition to inhibit the reaction with air in the atmosphere.

HPMC is a cellulose-based thickener, exhibiting a viscosity of a product, a function of preventing sagging and separation of a product, and an effect of improving workability.

The high purity alumina cement preferably has an Al ₂ O ₃ content of 68.5% by weight or more. High purity alumina cement is composed mainly of calcium aluminate, unlike OPC which is mainly composed of calcium silicate. Means a cement which is melted or fired at an appropriate ratio of alumina and calcium-based materials, and performs the function of imparting toughness, chemical resistance, acid resistance, and corrosion resistance to sulfate.

Calcium carbonate is included in the composition to improve dispersibility, and has characteristics of improving strength and imparting structural viscosity.

Calcium sulfoaluminate is a cement mineral compound mainly composed of CaO, Al ₂ O ₃ , and CaSO _4, and is included in the composition to impart properties such as hardness, roughness and swelling.

The fineness of the slag is ^{4,000cm 2 / g ~ 8,000cm 2 /} g, it is the content of CaO F-1 wt% or less is preferred. When the chemical composition or the glassy content is the same, the larger the slag powder is, the larger the specific surface area and the latent hydraulicity is sufficiently exhibited, thereby increasing the reactivity. F-CaO is unreacted free-lime (CaO). When the content of free CaO exceeds 1%, it collapses by the expansive reaction. This tendency tends to increase as the content of F-CaO increases.

Slag is a product of the steel industry, and it combines the potential hydraulic and pozzolanic reactivity to manifest hydroponics by the stimulation of alkali such as calcium hydroxide and sodium hydroxide. Improves chemical resistance to sulfate and seawater, and improves resistance to chloride ion or oxygen penetration.

The accelerator is calcium formate or lithium carbonate, and acts to accelerate the hydration reaction. The retarder is citric acid or tartaric acid, and performs the condensation delay of the cement.

Defoamer is a component that contributes to improvement of workability and mechanical properties by reducing air bubbles and controlling the amount of air.

The synthetic fibers preferably have a diameter of 10 to 20 탆 and a length of 6 to 18 mm, and perform a function of correcting the tensile strength and elongation at break of the composition.

The present invention also provides a process for producing a polymer composition comprising (1) polymerizing 80 to 98% by weight of a polymer, 1 to 10% by weight of a dispersant, 0.1 to 5% by weight of an oxidative stabilizer, (2) of 20 to 39% by weight of high purity alumina cement, 40 to 60% by weight of calcium carbonate, 10 to 30% by weight of calcium sulfoaluminate 10 By weight of the synthetic fiber is added at a rate of 50 to 100 rpm at a feed rate of 10 to 20% by weight, a slag of 5 to 20% by weight, an accelerator of 0.1 to 1% by weight, a retarder of 0.1 to 1% (FIG. 3) for 20 minutes to prepare a powder admixture (FIG. 3).

Hereinafter, the present invention will be described in more detail with reference to specific examples. The following examples illustrate one preferred embodiment of the present invention and are not intended to limit the scope of the present invention within the scope of the following examples.

[Example 1]

5 wt% of polyether as a dispersing agent, 5 wt% of BHT as an oxidizing stabilizer, 5 wt% of HPMC as a viscosity adjusting agent, and 5 wt% of borax as a crosslinking agent were mixed at a mixing temperature of 25 DEG C and a mixing speed of 300 rpm, Were sequentially added to prepare a liquid polymer admixture. Next, 20 to 39% by weight of high purity alumina cement with an Al ₂ O ₃ content of 69%, 40 to 60% by weight of calcium carbonate, 20 to 40% by weight of calcium sulfoaluminate, 0.1 to 1% by weight of calcium formate as an accelerator, 0.1 to 1% by weight of citric acid, 0.1 to 1% by weight of defoamer and 0.1 to 1% by weight of synthetic fibers having a diameter of 10 m and a length of 10 mm were added and mixed at 100 rpm for 20 minutes to prepare a powder admixture.

[Example 2]

5 wt% of polyether as a dispersing agent, 5 wt% of BHT as an oxidizing stabilizer, 5 wt% of HPMC as a viscosity adjusting agent, and 5 wt% of borax as a crosslinking agent were mixed at a mixing temperature of 25 DEG C and a mixing speed of 300 rpm, Were sequentially added to prepare a liquid polymer admixture. Next, 20 to 39% by weight of high purity alumina cement with an Al ₂ O ₃ content of 69%, 40 to 60% by weight of calcium carbonate, 10 to 20% by weight of calcium sulfoaluminate, 5 to 20% by weight of slag, 0.1 to 1% by weight of citric acid as a retarder, 0.1 to 1% by weight of an antifoaming agent and 0.1 to 1% by weight of synthetic fibers having a diameter of 10 μm and a length of 10 mm are mixed and mixed at 100 rpm for 20 minutes to prepare a powder admixture Respectively.

[Comparative Example]

A product manufactured by American D Company was used as a car spraying membrane composition and used according to the manufacturer's instructions.

[Experimental Example]

The compositions of Examples 1 to 2 and Comparative Examples were applied to the specimens, and the properties of each of the following items were tested. The results are shown in the table of FIG.

As shown in the table of FIG. 1, it can be confirmed that the compositions prepared from Example 1 and Example 2 of the present invention exhibit excellent properties in terms of adhesion strength and elongation as compared with those of commercially available D Company.

In particular, it was confirmed that the two-component spray-applied flame membrane composition using the slag of Example 2 has excellent long-term tensile strength, chemical resistance and leaching resistance.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

S100 to S500: Liquid polymer admixture production step
A100 ~ A800: Powder admixture manufacturing stage

Claims (8)

In a car-spraying membrane composition,
A liquid polymer admixture comprising 80 to 98% by weight of a polymer, 1 to 10% by weight of a dispersant, 0.1 to 5% by weight of an oxidation stabilizer, 0.1 to 5% by weight of a viscosity adjusting agent and 0.1 to 5% by weight of a crosslinking agent.
A slurry of 0.1 to 1% by weight, a retarder of 0.1 to 1% by weight, a defoaming agent of 10 to 20% by weight, a defoaming agent of 20 to 40% by weight, a calcium carbonate of 40 to 60% by weight, calcium sulfoaluminate of 10 to 20% 0.1 to 1% by weight of a synthetic fiber and 0.1 to 1% by weight of a synthetic fiber,
The weight ratio of the liquid polymer admixture to the powder admixture is 1: 0.3-0.5,
The polymer may be an ethylene vinyl acetate copolymer or PVAc (poly vinyl acetate) latex,
Wherein the dispersant is polyether, the oxidation stabilizer is BHT (bibuthyl hydroxy toluene), the viscosity modifier is HPMC (hydroxy propyl methyl cellulose), and the crosslinking agent is borax. (EN) PHARMACEUTICAL INSULATED FLOW MIXTURE COMPOSITION.
delete delete delete The method according to claim 1,
Wherein the high purity alumina cement has an Al ₂ O ₃ content of 68.5 wt% or more.
6. The method of claim 5,
Fineness of the slag is ^{4,000cm 2 / g ~ 8,000cm 2 /} g , and the content of the two-component F-CaO based slag, characterized in that not more than 1% by weight tea receiving ppumchil membrane composition.
The method according to claim 6,
Wherein the accelerator is calcium formate or lithium carbonate, the retardant is citric acid or tartaric acid, and the synthetic fiber has a diameter of 10 to 20 μm and a length of 6 to 18 mm. (EN) PHARMACEUTICAL INSULATED FLOW MIXTURE COMPOSITION.
(1) A thermosetting resin composition comprising 80 to 98% by weight of a polymer, 1 to 10% by weight of a dispersant, 0.1 to 5% by weight of an oxidative stabilizer, 0.1 to 5% by weight of a viscosity modifier, 0.1 to 5 wt% is added to prepare a liquid polymer admixture; And
(2) 20 to 39 wt% of high purity alumina cement, 40 to 60 wt% of calcium carbonate, 10 to 20 wt% of calcium sulfoaluminate, 5 to 20 wt% of slag, 0.1 to 1 wt% of accelerator, 0.1 to 1% by weight of an antifoaming agent, 0.1 to 1% by weight of a synthetic fiber, and mixing at 50 to 100 rpm for 10 to 20 minutes to prepare a powder admixture,
The weight ratio of the liquid polymer admixture to the powder admixture is 1: 0.3-0.5,
The polymer may be an ethylene vinyl acetate copolymer or PVAc (poly vinyl acetate) latex,
Wherein the dispersant is polyether, the oxidation stabilizer is BHT (bibuthyl hydroxy toluene), the viscosity modifier is HPMC (hydroxy propyl methyl cellulose), and the crosslinking agent is borax. (EN) METHOD FOR MANUFACTURING PHOSPHORUS FLUORINE MEMBRANE COMPOSITION.

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