KR20000075210A - Method for manufacturing a building materials using a ocher - Google Patents

Abstract

PURPOSE: A manufacturing method of construction material using loess is provided to have high strength products, color peculiar to loess by pressure molding loess. CONSTITUTION: The loess construction material is manufactured by the following steps: dissolving loess into water, separating particles by precipitating and drying in turn to get loess power, in which optionally 0.1-5%(based on total weight of weight) of stearic acid-based water repellent agent and 5-30%(based on total weight of weight) of tensile reinforcing material such as pulps, straws and woods are added: adding 2-30%(based on total weight of weight) of polyvinyl acetate(PVA); forming with a metallic mold under 150-1500kg/cm¬2 of pressure within 3-10min; drying at 75-150°C for 2-4hrs.

Description

Method for manufacturing a building materials using a ocher}

The present invention relates to a method for manufacturing building materials using loess, and more particularly, by adding a chemical or natural product to the loess and compressing the building material, the building material using loess which can manufacture a high strength solidified molded product without changing the color of loess. It relates to a manufacturing method.

In general, ocher has been used as a traditional building material and interior material in Korea. Ocher has excellent self-temperature control ability and emits far infrared rays, so it has excellent detoxification effect, insulation effect and calorie preservation effect. Ocher is cool in summer, warm in winter, and has excellent functions such as humidity control, ventilation, and ventilation. Therefore, it is suitable for humid climate conditions like Korea.

Such ocher is not used as a building material due to the spread of cement, but recently, it is attracting attention again because of the excellent efficacy of ocher, and methods for manufacturing various building materials using ocher have been tried.

However, even if you want to use the loess as a building material, there is no construction material made of loess having a certain standard and strength to be suitable for use in construction. Until now, it has been used in construction as a degree of painting interior and exterior walls through plastering work. .

Ocher can be molded by adding a small amount of moisture due to various and irregular components, but when a large amount of moisture is added to the loess, the particles are dispersed throughout the water, so it is limited to use the loess in an open state in a certain form. Therefore, there is a need for a method of molding the loess to maintain high strength in the open air.

Conventionally, in order to solidify the loess, the loess is kneaded with water, dried, and then heated and sintered. This heating method has a problem in that the color change occurs as the ocher is solidified, so the color of the ocher itself is lost.

The present invention was invented to solve the conventional problems as described above, by adding a chemical or natural product to the ocher by compression molding, building materials using ocher which can produce a high-strength solidified molded article without changing the ocher color The purpose is to provide a manufacturing method.

1 is a flowchart of a method for manufacturing building materials using loess according to the present invention.

In order to achieve the object of the present invention as described above, the present invention,

Precipitating ocher in water to remove foreign substances and preparing the powder to dry;

Mixing PVA with powdered loess within a range of 2-30% of the total loess mass;

Forming a product by applying a pressure of 150-1,500 kg / cm 2 within a time range of 3-10 minutes in a form having a predetermined shape in a form having a predetermined shape to suit the purpose;

Drying the molded article at 75-150 ° C. for 2-4 hours.

Building materials manufacturing method using the loess according to the present invention has a high strength by mixing chemicals or natural products in the loess, it is possible to produce a building material does not change the intrinsic color of the loess.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating a method of manufacturing building materials using loess according to the present invention.

As shown in Figure 1, the building material manufacturing method using the loess according to the present invention first dissolve the collected ocher in water and then precipitates to select the ocher according to the powder. Since the initial sediment contains a large amount of sand, pure ocher is selected by removing the sand by the precipitation method using the specific gravity of ocher and sand. The selected ocher is dried and powdered.

Pure ocher is selected and powdered, and then an organic adhesive PV (PVA) is mixed with about 10% of the total mass of the loess. PVA adhesive used at this time can be used to 2-30% of the mass of ocher. PVA, which has a high molecular weight, is insoluble in water, so that when it comes in contact with water after sticking, it does not diffuse and dissolve in water.

The loess mixed with the adhesive PVA is placed in a mold (mold) manufactured according to the desired shape, and the product is molded while applying a pressure of 150-1500 kg / cm 2 for 3-10 minutes. When high pressure is applied to the formwork, pressure is evenly transmitted within the formwork, thereby compression molding the product.

This high pressure compression molded product is dried for 2-4 hours at 75-150 ℃ to complete the building materials. The product thus produced has a molded body which is solidified at high strength without changing the color of the loess.

In addition, according to the present invention, the construction material manufacturing method using loess may mix stearic acid-based water repellent within the range of 0.1-5% of the total loess mass before mixing the pressure-sensitive adhesive PVA, if necessary. PVA is mixed with a mixture of stearic water repellent and ocher and then molded by applying a pressure of 150-1,500 kg / cm 2 for 3 to 10 minutes as before. And the molded product can be dried at 75-150 ℃ for 2-4 hours to complete the building materials. The finished building materials are stearic acid-based water-repellent agent is added to increase the resistance to water, thus high waterproofing effect.

In addition, according to the present invention, a method of manufacturing building materials using loess may mix fibers with loess within 5-30% of the total mass of loess before mixing polyvinyl acetate (PVA) as necessary. The added fiber can be made of materials such as pulp, rice straw, wood, etc., by mixing PVA with a mixture of fiber and ocher, and then molding by applying a pressure of 550-1,500 kg / ㎠ for 3-10 minutes as before. Let's do it. And the molded product can be dried at 75-150 ℃ for 2-4 hours to complete the building materials. Products made with the addition of fiber to ocher can increase the tensile strength and insulation effect.

Products molded by the above methods can be used as interior building materials, depending on the purpose, can be used as a ceiling material, bricks, sidewalk blocks and road pavement such as forbidden or temples.

As described above, the construction material manufacturing method using the loess according to the present invention by compression molding by adding a chemical or natural product to the loess, it is possible to produce a high-strength solidified building material without changing the color of the loess. The resulting building materials have excellent waterproofing effect, insulation effect and tensile strength, and when used as road paving materials for palaces and temples, it has the effect of improving the dignity of palaces and temples with the color of ocher.

In addition, this invention is not limited to the said Example, It can variously deform and implement by those skilled in the art within the range which does not deviate from the technical summary of this invention.

Claims (4)

Iii) precipitating ocher in water to remove foreign substances and preparing the powder to dry; Ii) mixing PVA with the powdered loess within a range of 2-30% of the total loess mass; Iii) forming a product by applying a pressure of 150-1,500 kg / ㎠ in a time range of 3 to 10 minutes in a mold having a predetermined shape in the form of the ocher mixture mixed with the PVA; Iii) drying the molded product at 75-150 ° C for 2-4 hours. The method of claim 1, wherein the step (b) is a step of adding stearic acid-based water repellent to the manufactured ocher powder within a range of 0.1-5% of the total mass of ocher and mixing them. The method of claim 1, wherein the step (b) is a step of adding a tensile reinforcing material to the manufactured ocher powder within a range of 5-30% of the total mass of ocher and mixing them. The method of claim 3, wherein the tensile reinforcing material is pulp, rice straw, wood, such as cellulose.