KR20040080670A - Construction method for bubble concrete mortar composition - Google Patents

Abstract

PURPOSE: Provided is a construction method of foam concrete mortar with incombustibility, heat insulation, and sound absorption and insulation by using phosphogypsum, granite powder and waste slaked lime as main materials. CONSTITUTION: The foam concrete mortar composition is prepared by dry-mixing main materials, 30-70wt.% of phosphogypsum, 30-70wt.% of granite powder and 30-70wt.% of waste slaked lime(Ca(OH)2) and auxiliary materials. The phosphogypsum, generated after fertilizer production, is thermal treated at 150-800deg.C for remove moisture and small amounts of pollutants, and granite powder and waste Ca(OH)2 are dried at 200-300deg.C for use as main materials. The auxiliary materials comprise 20-40wt.% of cement, 2-10wt.% of yellow earth, kaolin or feldspar, 0.01-0.5wt.% of foaming material, 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 applied to walls and between floors is easily constructed by mixing with 50-85wt.%(based on the mortar) of water, forming foams for 20-50min and dry-curing.

Description

Non-combustible, heat insulation, heat insulation, absorption. Construction method for bubble concrete mortar with sound insulation function

The present invention is non-combustible, heat insulation, heat insulation, absorption. The present invention relates to a method for constructing a foamed concrete mortar having sound insulation, and more specifically, 30 to 70% by weight of phosphate gypsum, which has been heat-treated at a temperature of 150 ° C. to 800 ° C. to stabilize moisture removal and trace amounts of pollutants impregnated. 30 to 70% by weight of dried granite stone powder and / or 30 to 70% by weight of dried waste limestone, 20 to 40% by weight cement, 2 to 10% by weight of loess or kaolin, feldspar powder, Foam 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 powder) 0.01 to 5% by weight, concrete strength enhancer 0.5 ~ 3% by weight, 3 ~ 15% by weight of the tensile strength enhancer (disintegrated stone) dry mixed, and then mixed at 50 to 85% of the weight of the mixed mortar by mixing at the construction site to maintain a uniform turbidity, 20 minutes to 50 minutes Complete after elapse Dry curing after foaming group is formed to prevent impact and noise on floors or walls of high-rise residential buildings, etc., as well as non-combustible, heat-insulating, heat-insulating, and non-combustible. It relates to a construction method of foamed concrete mortar having a sound insulation function.

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 an insulating layer, mixes all the cement with air bubbles in the process of slurrying and mixing the cement, so that excessive cement is used, 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, there is no alternative solution that can completely solve even the insulation layer problem alone. Lightweight mortars with sound insulation have 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. The effect of sound insulation will be very minimal.

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 construction method according to the mortar composition and its manufacturing method.

More specifically, the main composition of the ultra-light foam cement mortar having the above excellent function is made of granite stone powder, which is inevitably produced in the stone processing plant, as a cast material, but removes moisture and stabilizes the structure, resulting in non-combustibility, thermal insulation, thermal insulation, 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 deposited and dumped waste material,

In addition, the present invention provides a composition for a comfortable residential space, such as far-infrared radiation effect, deodorant effect, proper humidity adjustment, and construction method by the method of admixing the ocher as admixture in the composition and its preparation method. Is in.

1 is a manufacturing and construction process of the composition according to the present invention.

The present invention for achieving the above object, 30 to 70% by weight of the high temperature heat-treated gypsum phosphate gypsum and / or dried granite stone powder 30 in order to stabilize the removal of moisture and a small amount of pollutants impregnated ~ 70% by weight and / or dry hydrated lime 30 ~ 70% by weight as main material, 20 ~ 40% by weight cement, ocher or kaolin, feldspar 2 ~ 10% by weight, foam 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 chaff) 0.01 to 5% by weight, concrete strength enhancer 0.5 to 3% by weight, tensile strength enhancer ( Haeposeok) 3 ~ 15% by weight of dry blended and mixed at 50 ~ 85% of the weight of the mixed mortar by mixing at the construction site to maintain a uniform turbidity, after 20 minutes to 50 minutes after the complete foam group is formed Having dry curing characteristics .

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

1 is a manufacturing and construction process diagram of the composition according to the present invention.

Before briefly describing the composition of the present invention, the process of producing phosphate gypsum and granite and waste limestone and the treatment method thereof, gypsum desulfurization process of power plants and chemical plants as well as phosphate gypsum inevitably produced during fertilizer production Although the amount of desulfurized gypsum produced in Korea is increasing, some of the gypsum produced is inevitably used for the production of gypsum board or cement. Not only are the costs consumed, but also the pollution and visual pollution caused by the blown dust is an urgent problem, and a large amount of recycling measures are urgently required.

In addition, the stone powder and granite, such as granite and marble, which are inevitably generated in the stone processing plant or the quicklime production process, are produced indefinitely nationwide, and there is no recycling plan. Although landfilling is being carried out, recycling is urgently required because of high viscosity due to impregnated water, which cannot be mixed, resulting in enormous environmental infringement during landfilling.

In this situation, the present invention is a key aspect of the present invention is to recycle the phosphate gypsum, granite stone powder and waste lime which are mass-produced in large quantities as a counterpart in the fertilizer production process, stone processing, and quicklime production process.

More specifically, as shown in FIG. 1, the phosphate gypsum contains a small amount of moisture and environmental harmful substances, and is dried and dried in a rotary kiln under conditions of about 30 to 40 minutes in a rotary kiln as shown in FIG. Roasting heat treatment stabilizes the harmful substances contained in the phosphate gypsum, strengthens the structure, and also the granite or powdered waste lime, whose main component is SiO ₂ , is also impregnated with moisture. After passing through, the resulting particle size is almost the same as cement, loess and other admixtures described below, and mixes well with all admixtures. In particular, it forms an even distribution of pores when bubbles are generated during the foaming process, and stabilizes the formation of bubbles of even size. Strong, high strength, ultra light absorption. 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 with negative effects is obtained.

Thereafter, at the construction site, 50 to 85% of the mixed mortar weight is mixed and stirred to maintain uniform turbidity, and after 20 minutes to 50 minutes, a complete foaming group is formed and dried and cured to complete the construction process.

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 produced and disposed of infinitely in the production process of the fertilizer plant, the stone processing plant, the production process of quicklime, the recycling of large amounts of phosphate gypsum, granite stone powder, waste lime, environmental It has the effect of contributing to the problem and achieving economic effects.

In addition, the present invention is simply poured a suitable amount of water to the composition obtained as described above, since the construction is simply performed after a certain time is greater than any advantage that the productivity is improved.

Claims (1)

30 to 70% by weight of hot phosphate gypsum and / or 30 to 70% by weight of dried granite stone powder and / or dry treated at a temperature of 150 ° C to 800 ° C in order to stabilize moisture removal and trace pollutants impregnated. Waste slaked lime 30 ~ 70% by weight of the main material, 20 to 40% by weight of cement, loess or kaolin, 2 to 10% by weight feldspar powder, foaming agent (alumina powder, zinc powder) 0.01 ~ 0.5% by weight, foaming catalyst ( Quick mixing of 2 to 5% by weight of quicklime and carbonate), 0.01 to 5% by weight of anti-separation stabilizer (methylcellulose, wood flour or rice husk powder), 0.5 to 3% by weight of concrete strength enhancer and 3 to 15% by weight of tensile strength enhancer (latticulite) Non-combustible, heat-insulating, characterized in that the mixing turbidity of 50 ~ 85% of the weight of the mixed mortar weight in the construction site to maintain a uniform turbidity, after 20 minutes to 50 minutes the complete foam group is formed and dried curing , Keep warm, absorb. Construction method of foamed concrete mortar with sound insulation function.