KR20020010844A - A Covering Material for Steel-Frame Containing Perlite - Google Patents

Abstract

PURPOSE: Steel coating materials containing perlite, being harmless to the human, as a main component are provided for use construction fields demanding insulation, damp-proof, and sound absorbance. Also, the resultant coating materials prevent environmental pollution and have good workability. CONSTITUTION: The steel coating materials comprise 60-75vol.% of perlite, 20-30vol.% of inorganic binding materials containing sodium silicate, borax(Na2B4O7·10H2O) and earth mixed with yellow earth and sand soil in a weight ratio of 3.5 : 3.5 : 1, additives such as soil stabilizer. The resultant coating materials excluding harmful materials(asbestos, rock wool, etc.) for person are applied to ceilings and walls by spraying.

Description

Steel Covering Material Containing Perlite {A Covering Material for Steel-Frame Containing Perlite}

The present invention relates to a steel cladding material which is a plastering material for construction and civil engineering structures, and more particularly, to a composition of an environmentally friendly steel cladding material which is manufactured by mixing a ferrite which is harmless to the human body as a main material and mixing sodium silicate, borax and soil. will be.

Soil, known as the most ideal building material, can not guarantee dimensional stability when used as a building material due to its high shrinkage and expansion rate in modern times, its strength is weak in itself, and its miscibility with cement or other aggregates is poor. There is a problem that it does not fit the risk and modern sense, so it is avoided to be used as a building material. Commercially available coating materials are made of fillers such as bentonite, organic binders such as starch, phenol resins, and pulp, and bonding aids such as emulsion wax, alumina sulfate, and polyacrylamide. At the time, there was a problem that it could not satisfy sag properties, and low strength, heat insulation, sound insulation and fire resistance, as well as harmful asbestos, rock wool, vermiculite, and foamed polystyrene, etc. In case of irritation, there was a defect that is harmful to the human body.

The present invention has been made to solve the problems of the prior art as described above, the present inventors produce a steel cladding material by mixing an inorganic binder and various additives as a main component of harmless and lightweight Perlite (harm) The fired steel cladding was applied to the building and civil engineering structures to confirm that the thermal insulation and seamless uniform finish layer is in harmony, and thus has an excellent effect on fire resistance, heat loss prevention and condensation prevention.

After all, it is an object of the present invention to provide a steel cladding comprising perlite.

Another object of the present invention is to provide the most preferred composition of the electrical steel cladding.

1 is a flow chart for constructing the steel cladding material of the present invention

2 is a photograph of the steel cladding material of the present invention

♣ Explanation of symbols for the main parts of the drawing ♣

P1: Transport Process P2: Machine Installation Process

P3: Workplace Installation Process P4: Ground Surface Inspection Process

P5: Spraying Process P6: Complete Inspection Process

Hereinafter, the present invention will be described in more detail.

Steel coating material, which is a plastering material for building and civil engineering structures, is manufactured by mixing 30 to 20% by volume of an inorganic binder and various additives based on 75 to 60% by volume of perlite as a main component to achieve the object of the present invention. .

In the above, it is preferable to use sodium silicate, borax and soil as the inorganic binder, the mixing ratio is more preferably a weight ratio of 3.5: 3.5: 1, and the soil is preferably using ocher and martha soil. .

In the present invention, the perlite is used to effect the fire, heat insulation, sound absorption and condensation prevention, while the magma flows into the surface lake or the sea and rapidly cools, while volatile matter is concentrated inside the amorphous mineral produced at an appropriate particle size. It is a building material that is toxic, sterile, and odorless. Perlite used in the present invention was used as Samson's product and physical properties are shown in Table 1 and chemical properties in Table 2.

Sodium silicate used in the present invention is a product obtained by melting soda carbonate and quartz powder as a product of Ilshin Chemical Co., Ltd. It is used as an additive because the color is white and odorless solid and gives cement quickness when emergency work is needed. It has excellent acid and fire resistance and is used as caking material.

Borax is used as a raw material for preservatives, disinfectants, optical glass, glazes, soaps, and paints. Is produced from hot spring sediment and volcanic lake sediment, and is artificially produced by adding sodium carbonate to other borate minerals or boric acid. Borax used in the present invention has a specific gravity of 1.69 to 1.72, hardness of 2 to 2.5, colorless to white, semitransparent to opaque, semimagnetic, and solubility at a temperature of 20 ° C. 4.7 g / 100 g H ₂ O When borax is dissolved in water, the aqueous solution shows strong alkalinity.

Soil has been used as a basic building material from the primitive age, and the soil used in the present invention means soil in a broad sense including not only ordinary clay but also ocher soil and martha soil. Ocher is the most ideal building material of natural materials. It is a nonflammable and the energy generated during the oxidation process is known to have a beneficial effect of removing poison from the human body.

Hereinafter, the present invention will be described in more detail with reference to the following examples. These examples are only for illustrating the present invention, and it will be apparent to those skilled in the art that the scope of the present invention is not limited to these examples according to the gist of the present invention.

Example 1

20 vol% of the inorganic binder mixed with 75% by volume of ferrite, sodium silicate, borax and ocher soil in a weight ratio of 3.5: 1, and additives such as soil stabilizer were added to a continuous stirrer and stirred for 1 hour. Steel cladding was applied to the ceiling of the building by spraying with a spray device.

Example 2

The test was carried out in the same manner as in Example 1 except that 70 vol% of ferrite was used and 25 vol% of an inorganic binder mixed with sodium silicate, borax, and loess soil at a weight ratio of 3.5: 3.5: 1 was used.

Example 3

The test was carried out in the same manner as in Example 2, except that marsa soil was used instead of the loess soil of the inorganic binder.

Example 4

The test was carried out in the same manner as in Example 1 except that 60 vol% of ferrite was used and 30 vol% of an inorganic binder mixed with sodium silicate, borax, and loess soil at a weight ratio of 3.5: 3.5: 1 was used.

In order to evaluate the performance of the steel cladding material prepared in each of the above examples, the performance test was conducted according to KS L 5113, ASTM E 605, ASTM E 736, KS F2271, ASTM E 937, KS F 2271, and the results are as follows. It is shown in Table 3.

In addition, the results of the sound absorption experiment based on KS F 2805 according to the embodiment of the present invention are shown in Table 4.

The sound absorption coefficient was calculated using the following equation, and the sound absorption coefficient of the steel cladding material according to the present invention was 0.75.

NRC = (250Hz + 500 Hz + 1KHz + 2KHz) / 4

NRC stands for Noise Reduction Coefficient and represents the arithmetic mean of sound absorption coefficients at frequencies 250, 500, 1K, and 2K.

In addition, the fire resistant structure characteristics of the steel cladding according to the embodiment is shown in Table 5.

As can be seen from Tables 3, 4 and 5, the product of the present invention is not only excellent in fire resistance and heat insulation effect, but also found to be very good in construction density, adhesive strength and corrosion resistance, and fine materials are uniformly focused to absorb sound effect. It is excellent and can guarantee a quiet and comfortable living space from the noise pollution of the downtown area. In addition, the perlite is distributed in an appropriate particle size, so that the color and texture are appropriately harmonized, and the coloring is free and the finishing technique is excellent to maximize the aesthetic effect of the construction surface.

As described above, the steel cladding material according to the present invention can be used as heat insulation, fireproofing, anti-condensing agent, plastering agent and wet-curing cladding material of ceiling and wall of a building, and as sound absorbing material in places where noise occurs in boiler room, machine room, workshop, etc. Also useful. In addition, asbestos, rock wool, vermiculite, foamed polystyrene, etc. are not included, so the safety of the building is less likely to cause environmental pollution, and the method of use is easy, and thus the workability is excellent.

Claims (3)

A steel coating material, which is prepared by mixing 75 to 60 vol.% Of perlite, 30 to 20% by volume of an inorganic binder, and various additives. The steel cladding material according to claim 1, wherein the mixing ratio of sodium silicate, borax and earth used as the inorganic binder is comprised of a weight ratio of 3.5: 3.5: 1. The steel cladding material according to claim 2, wherein the soil is composed of loess soil and martha soil.