KR20040080665A - Bubble concrete mortar composition and its manufacturing process - Google Patents

Abstract

PURPOSE: Provided is a preparation method of foam concrete mortar composition with incombustibility, heat insulation, and sound absorption and insulation by using phosphogypsum as a main material. CONSTITUTION: The foam concrete mortar composition is prepared by dry-mixing 30-70wt.% of phosphogypsum as a main material and auxiliary materials. The phosphogypsum, generated after fertilizer production, for use as a main material is dried at 150-800deg.C for 30-40min to remove moisture and harmful materials. The auxiliary materials comprise 20-40wt.% of cement, 2-20wt.% of yellow earth, kaolin or feldspar, 0.01-0.5wt.% of foaming material such as Al2O3 or Zn, 2-5wt.% of foaming catalysts such as CaO and carbonate, 0.01-5wt.% of separation inhibitor such as methyl cellulose, wood powder or rice hull, 0.5-3wt.% of concrete strength-reinforcing material, and 3-15wt.% of tensile strength-reinforcing material such as sepiolite. The resultant mortar is easily applied in the construction field by mixing with water.

Description

Non-combustible, heat insulation, heat insulation, absorption. Bubble concrete mortar composition and its manufacturing process

The present invention is non-combustible, heat insulation, heat insulation, absorption. The present invention relates to a foamed concrete mortar composition having a sound insulation function and a method of manufacturing the same, and more particularly, to hydrated plaster and high temperature heat-treated at 150 ° C. to 800 ° C. to stabilize trace amounts of pollutants. % As main material, 20-40% by weight of cement, loess or kaolin, 2-20% by weight of feldspar powder, 0.01-0.5% by weight of foam foaming agent (alumina powder or zinc powder), foaming catalyst (quick lime, carbonate) 2 ~ 5% by weight, dry anti-separation stabilizer (methylcellulose, wood flour or rice husk) 0.01 ~ 5% by weight, concrete strength reinforcement 0.5 ~ 3% by weight, tensile strength reinforcement (calculated stone) by dry blending high-rise residential buildings, etc. Non-combustible, heat-insulated, heat-insulated, and non-combustible to prevent shock, noise, and non-flammability, heat insulation, and heat insulation. It relates to a foamed concrete mortar composition having a sound insulation function and a method for producing the same.

In general, all people living in modern society rapidly seek better living spaces in the change of residential culture, and in the process of living, residential buildings are pleasant at the time of high rise due to lack of residential land and development of building technology. It is the desire of all human beings that they are trying to own their own, quiet and quiet living space, and enjoy the right to pursue their own happiness.

Therefore, the most important part is the unpleasant impact sound and noise that can be generated between the heating sector and the class in the living space.

As a result, due to the constant dissonance and complaints between the neighbors who are most intimate and close to each other, the government has set the standard for floor impact noise in November 2002 and predicted legislation.

In light of this situation, many researchers have suggested a lot of lightweight concrete with a heat insulating layer and a method of manufacturing the same, but its utility has been questioned in practical use.

Looking at the conventional technical thoughts and problems are as follows.

Lightweight foam concrete, which is mainly applied as a heat insulating layer, mixes all the cement with air bubbles in the process of slurrying and mixes the cement. Excessive cement is required, resulting in economic waste and high weight of cement. There is a problem of cracking due to severe shrinkage, and in case of obtaining proper pore in hardened body by using only cement with high specific gravity, it is difficult to apply due to problems such as high specific gravity and high precision of cracking slurry. It is impossible to do it, and it can be constructed only with low specific gravity, which causes many defects such as poor strength and precipitation of hardened body.

Although much research and efforts have been made so far, not only an alternative solution to the insulation layer problem has been proposed, but a lightweight mortar with all the problems of the insulation layer and sound absorption and sound insulation has not been developed.

More specifically, the method of manufacturing non-combustible complex foam lightweight concrete of Korean Patent Application Publication No. 86-8958 does not improve the problem of crack or strength failure at all because only fly ash or carbide is used as a filler. In addition, only a part of cement is replaced by aggregate, and in the method of manufacturing lightweight insulating concrete of Korean Patent Application Publication No. 92-2287, cement together with styrofoam particles, volcanic ash, perlite, popstone, blast furnace slag, Although construction methods using lightweight aggregates such as vermiculite have been proposed, these materials have only the role of adjusting aggregates by adding aggregates to cement. Thus, the method of manufacturing non-combustible concrete foams and lightweight concretes described in Korean Patent Application Publication No. 86-8958 described above. It can be almost the same. This did not solve the fundamental problem of lightweight foamed concrete while causing problems such as bleeding and particle size separation during construction, such as operating limitations such as hardening in the construction machine.

In addition, the technology proposed as a solution to the problem relates to a method for constructing an insulating layer using lightweight aggregate or waste plastic as aggregate, and Korean Patent Application Publication No. 94-2202 Method for manufacturing aerated concrete and Korean Patent Publication No. 95 A method for manufacturing lightweight insulated concrete has been proposed. According to this method, it was intended to increase the thermal insulation by applying lightweight aggregates such as polyurethane and EVA styrofoam, but these materials are very light weight when mixed with cement slurry and poured into the admixture, which is the ultra-light aggregate, resulting in floating organic matter. Thermal separation coefficient and drying and shrinkage difference between the separation layer due to the separation of the inorganic material and inorganic material causes a risk of defects. In particularly serious cases, when the heating starts after moving in, the insulation layer may be peeled off and the floor must be rebuilt. In other words, it will affect the finishing layer. In order to make up for this drawback, the method of applying the mortar composition for the construction of the insulating layer and the heat storage layer was proposed by using a bubble group as a admixture in the insulating mortar composition having enhanced hardenability and shrinkage stability. In addition, the amount of cement used is too high to achieve ultra-light weight, and thermal insulation and heat storage effects can be obtained, but the effects of sound absorption and sound insulation will be extremely small.

Therefore, the present invention was created in order to solve the above problems, and its purpose is to prevent shock and noise on the floors or walls of high-rise residential buildings, etc., as well as ultra-light foam concrete to have a non-combustible, insulating, and insulating function. It is to provide a mortar composition and a method of manufacturing the same.

More specifically, the main composition of the ultra-light foam cement mortar having the above excellent function is made of phosphate gypsum, which is inevitably produced in a phosphate fertilizer plant, but the environmentally harmful substances contained in the phosphate gypsum are 150 ° C. to 800 ° C. Remove water continuously and stabilize the tissue to prevent inflammability, heat insulation, warmth and absorption. To obtain an ultra-light foam cement mortar composition having a sound insulation function, and to provide a method for mass recycling of waste material deposited and dumped waste material,

In addition, the present invention provides a composition and a method for producing the same for a comfortable living space, such as far-infrared radiation effect, deodorizing effect, adjustment of the appropriate humidity by admixing the ocher with the admixture in the composition and its preparation method.

1 is a manufacturing process diagram of the present invention.

The present invention for achieving the above object, 30 to 70% by weight of a high temperature heat-treated gypsum phosphate gypsum in a condition of 150 ℃ to 800 ℃ in order to stabilize the removal of pollutants impregnated with moisture, as a main material, cement 20 ~ 40% by weight, ocher or kaolin, feldspar 2-20% by weight, foaming agent (alumina powder or zinc powder) 0.01 ~ 0.5% by weight, foaming catalyst (quick lime, carbonate) 2 ~ 5% by weight, anti-separation stabilizer (methyl Cellulose, wood flour or rice hull) 0.01 to 5% by weight, 0.5 to 3% by weight of concrete strength enhancer, 3 to 15% by weight of tensile strength enhancer (gallbladder) is characterized by dry mixing.

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

1 is a manufacturing process chart of the present invention.

Before briefly describing the composition of the present invention and the process of producing phosphate gypsum and its treatment method, gypsum is not only phosphate inevitably generated during fertilizer production but also desulfurized gypsum generated in desulfurization processes of power plants and chemical plants. The amount of gypsum is increasing, but some of the gypsum is inevitably used for the production of gypsum board or cement. However, the amount of gypsum is much higher than the amount of gypsum and the amount of gypsum is accumulated. In addition, pollution and visual pollution, such as dust blown by the wind is also an urgent problem, a large amount of recycling measures are urgently required.

In this context, the present invention is a key aspect of the present invention is to recycle the phosphate gypsum mass-produced in large quantities as a counterpart of the fertilizer production.

More specifically, the phosphate gypsum contains a small amount of moisture and environmental harmful substances, and as shown in FIG. 1, the rotary phosphate is dried and roasted under a condition of about 150 ° C. to 800 ° C. for 30 minutes to 40 minutes, and the phosphoric acid Stabilizes the harmful substances contained in the gypsum, and the resulting particle size is almost the same as the cement, loess and other admixtures described below and blends well with all admixtures, creating an even distribution of pores during foaming, especially during foaming. It stabilizes the formation of bubbles and has a strong high strength ultra-light absorption after curing. You get the performance of sound insulation.

20 to 40% by weight of cement, 3 to 15% by weight of ocher, kaolin powder or feldspar, 0.01 to 0.5% by weight foaming agent (alumina powder, zinc powder), 2 to 5% by weight of foam catalyst (quick lime and carbonate), Anti-separation stabilizer (methyl cellulose, wood powder, rice husk powder) 0.01 ~ 5% by weight, concrete strength enhancer 0.5 ~ 3% by weight, tensile strength enhancer (hamyeoseok) by adding 3-15% by weight of the appropriate amount of construction at the construction site Ultralight absorption if mixed with water. You get sound insulation.

It is characterized by controlling the water content according to the ambient temperature and the height of the bubble concrete to obtain to the environment.

In this case, strong and evenly distributed pores are formed in the foam concrete of 200 ~ 300% of the volume of the forming composition, it can obtain a compressive strength of 70 ~ 120Kgf / cm when dry hardening. Sound insulation is less than 58dB light weight, less than 50dB weight. A composition of ultralight cement mortar having a sound insulation effect is obtained.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

Due to the present invention as described above, the non-combustible, heat-insulating, heat-insulating function between building layers, such as multi-family housing that did not process the heat insulation and heat storage layer or sound absorbing and insulating layer at the same time. Ultra-light cement mortar composition for sound insulation and manufacturing method has the effect of obtaining a quiet and comfortable living space with economical efficiency, easy construction, and perfect performance.

In addition, the main composition for obtaining the composition of the present invention is infinitely produced and discarded in the production process of the fertilizer plant, the mass recycling process of phosphate gypsum accumulated, there is an effect that helps to solve the environmental problems and economic effects.

Claims (2)

In order to stabilize moisture removal and stabilization of small amounts of pollutants, 30 to 70% by weight of phosphate gypsum heated at a temperature of 150 ℃ to 800 ℃ is used as the main material, and 20 to 40% by weight of cement, loess or kaolin, feldspar 2 to 10% by weight of powder, foaming agent (alumina powder, zinc powder) 0.01 to 0.5% by weight, foaming catalyst (quick lime and carbonate) 2 to 5% by weight, anti-separation stabilizer (methylcellulose, wood flour or rice husk) 0.01 to 1 Non-flammable, heat insulation, insulation, moisture absorption, characterized in that dry mixing is prepared by weight%, concrete strength reinforcement 0.5-3% by weight, tensile strength reinforcement (calcite) 3-15% by weight. Method for producing foamed concrete mortar with sound insulation. Non-combustible, heat-insulating, heat-insulating, absorption is obtained by the manufacturing method according to claim 1. Foamed concrete mortar composition with sound insulation.