KR20040107599A - Bubble concrete mortar composition and its manufacturing process - Google Patents

Abstract

PURPOSE: A method for producing a foamed concrete mortar composition for a floating floor structure is provided to give nonflammability, heat-insulation as well as impact or sound damping effect to the wall or the interlayer of a skyscraper for residential use, thereby improving the production economy and workability. CONSTITUTION: The foamed concrete mortar composition for a floating floor structure is produced by dry-mixing main materials and auxiliary materials. The main materials comprise: based on 20-70wt% of waste gypsum that is dried and high heat-treated with air stream at 150-180deg.C; 20-70wt% of at least one of floatation slag or fine dust from a stone crushing process; and 1-30wt% of a granite powder or blast furnace slag. The auxiliary materials comprise: 20-40wt% of cement; 2-20wt% of loess or kaolin, feldspar powder; 0.1-2wt% of a foaming agent such as alumina or a zinc powder; 0.01-5wt% of an alkali-based foaming accelerator such as caustic lime, sodium carbonitrate; 0.01-5wt% of a stabilizing agent such as methyl cellulose; and 0.5-3wt% of a strength modifier for concrete.

Description

Bubble concrete mortar composition and its manufacturing process for floating floor structural layer with non-combustible, heat insulation, heat insulation and sound absorption

The present invention relates to a foamed concrete mortar composition for a floating bottom structural layer having a non-combustible, thermal insulation, heat insulation, sound absorption and sound insulation, and a method for manufacturing the same, and more particularly, to a waste gypsum 20 dried at a temperature of 150 ° C. to 800 ° C. ~ 70% by weight, based on, 20 to 70% by weight of fine powder, or 20 to 70% by weight of flotation slag, or 20 to 70% by weight of crushed fine powder and 1 to 30% by weight of granite powder or Blast furnace slag 1 to 30% by weight as a main material, 20 to 40% by weight cement, ocher or kaolin, 2 to 20% by weight feldspar, 0.1 to 2% by weight foam foaming agent (alumina powder or zinc powder), alkali type Dry mixing of foaming accelerator (quick lime, sodium carbonate) 0.01 ~ 5% by weight, anti-separation stabilizer (methylcellulose, wood powder) 0.01 ~ 5% by weight, concrete strength enhancer 0.5 ~ 3% by weight between the floors of high-rise residential buildings, etc. Impact on the wall, Non-combustible, heat-insulated, heat-insulated, and non-combustible to prevent noise and to have non-combustible, insulated, and insulated functions. The present invention relates to a foamed concrete mortar composition for floating floor structural layers having a sound insulation function and a method of manufacturing 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 line with 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 in the practical use has been questioned.

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 mixes the cement, so 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 a solution to the insulation layer problem has been proposed, but a lightweight mortar with all the problems of the insulation layer and sound absorbing and insulating performance 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, as well as ultra-light floating floors to have incombustibility, heat insulation, and thermal insulation functions. The present invention provides a foamed concrete mortar composition for a structural layer and a method of manufacturing the same.

More specifically, the main composition of the ultra-light foam cement mortar for floating bottom structural layer having the excellent function as the cast material of waste gypsum, martha powder, flotation slag, or crushed stone process dust inevitably produced in the phosphate fertilizer plant To obtain ultra-light foam cement mortar composition for floating floor structure layer that has continuous non-moisture and stable structure by air flow drying and heat treatment at 150 ℃ ~ 800 ℃ It is to provide a method for mass recycling of waste deposited and discarded materials,

In addition, the present invention in the composition and its preparation method, by admixing ocher, kaolin, feldspar powder as admixture, composition for a comfortable residential space such as far-infrared radiation effect, antibacterial effect, deodorizing effect, proper humidity adjustment and the like To provide a manufacturing method.

1 is a manufacturing process diagram of the present invention.

In order to achieve the above object, the present invention, based on 20 to 70% by weight of waste gypsum and hot-heat-treated waste gypsum at 150 ℃ to 800 ℃ conditions in order to stabilize the removal of pollutants impregnated with water, ~ 70% by weight, or 20 to 70% by weight of flotation slag, or 20 to 70% by weight of crushed fine dust and 1 to 30% by weight of granite powder or 1 to 30% by weight of blast furnace slag 20 to 40 wt% cement, ocher or kaolin, 2 to 20 wt% feldspar powder, 0.1 to 2 wt% foaming agent (alumina powder or zinc powder), 0.01 to 5 wt% alkali foaming accelerator (quick lime, sodium carbonate) %, 0.01 to 5% by weight of the anti-separation stabilizer (methyl cellulose, wood flour), 0.5 to 3% by weight of the concrete strength enhancer is characterized by being dry blended.

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 describing the composition of the present invention, the process of producing phosphate gypsum and the treatment method thereof are briefly described. Although the amount of gypsum is increasing, some of the gypsum is inevitably used for the production of gypsum board or cement, but the amount of gypsum is much higher than the amount of gypsum used so that a considerable amount of gypsum is accumulated, and the cost of managing the stockyard is exhausted. 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.

Floating beneficiation sludge, which is commonly found in martha powder, gold, silver or bituminous minerals, and crushed fine dust generated in the process of crushing stones, is also a serious problem such as enormous pollution and visual pollution.

In consideration of such a situation, the key aspect of the present invention is to recycle the mass of waste gypsum or flotation slag, which is a mass production of waste gypsum and mine by mass production as a counterpart of fertilizer production.

More specifically, as shown in Figure 1 and continuously in the condition of 150 ℃ to 800 ℃ 30 minutes to 40 minutes and any one of the waste gypsum, martha powder or flotation slag or crushed process dust used as the main material in the present invention Granite powder or blast furnace slag is subjected to air drying and heat treatment to stabilize the harmful substances contained in each component, and then classified into individual storage tanks through a particle size separator and a crusher which are 100Φ mesh. Also goes through the above process. The reason for this process is that not only the resulting particle size is about the same as the particle size of ocher or cement and other admixtures described below, but also mixes well with all admixtures, especially in the process of foaming, forming an even distribution of pores, It is to stabilize the bubble formation and to obtain the performance of the ultra-lightweight sound absorbing and insulating material for the strong high strength floating floor structure layer after curing.

Based on 20 to 70% by weight of the waste gypsum, which is the main material measured by the digital meter, 20 to 70% by weight of martha powder, or 20 to 70% by weight of flotation slag, or 20 to 70% by weight of crushed stone And 1 to 30% by weight of granite powder or 1 to 30% by weight of blast furnace slag, 20 to 40% by weight of cement weighed as a subsidiary material, loess or kaolin, feldspar 2 to 20% by weight, foam foaming agent (alumina powder or zinc powder) 0.1 ~ 2% by weight, alkali foaming accelerator (quick lime, sodium carbonate) 0.01 ~ 5% by weight, anti-separation stabilizer (methyl cellulose, wood flour) 0.01 ~ 5% by weight, concrete strength enhancer 0.5 ~ 3% by weight of air mixture When mixed in a blender, the product is commercialized, and when a construction site is mixed with only an appropriate amount of water, an ultra-lightweight sound absorption and sound effect is obtained.

It is characterized by adjusting the admixture and water content according to the ambient temperature and the height of the bubble concrete to be obtained to the environment.

In this case, the strong and evenly distributed pores are formed of 200 ~ 400% of the foamed concrete of the volume of the composition, the dry strength can be obtained more than 15.30Kgf / cm compressive strength, the sound absorption and sound effect is less than 58dB light weight, 50dB The composition of the ultralight cement mortar for floating floor structure layers which has the following sound absorption 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 cement mortar composition for ultra-light floating floor structure layer for sound absorbing and insulating material with non-combustibility, heat insulation, and thermal insulation between building layers, such as apartment houses that did not process heat insulation and heat storage layer or sound absorbing and insulating layer at the same time. And manufacturing method has the effect of obtaining a quiet and comfortable living space with economical efficiency, easy construction, perfect performance.

In addition, the main composition for obtaining the composition of the present invention by mass recycling the waste gypsum or floating mine slag, which is left in the abandoned mines or abandoned mines infinitely produced and disposed during the production process, to help solve environmental problems and economic effects There is an effect to get.

Claims (2)

20 to 70% by weight of ground powder, 20 to 70% by weight of flotation slag, or 20 to 70% by weight of flotation slag, or 20 to 70% by weight of crushed stone process One of 70% by weight and 1 to 30% by weight of granite powder or 1 to 30% by weight of blast furnace slag, 20 to 40% by weight of cement, ocher or kaolin, feldspar 2 to 20% by weight, foam foaming agent ( Alumina powder or zinc powder) 0.1 ~ 2% by weight, alkali foaming accelerator (quick lime, sodium carbonate) 0.01 ~ 5% by weight, anti-separation stabilizer (methyl cellulose, wood powder) 0.01 ~ 5% by weight, concrete strength enhancer 0.5 ~ 3 Method for producing a foamed concrete mortar for floating floor structural layer having a non-flammable, thermal insulation, insulation, sound absorbing and insulating functions, characterized in that dry weight is manufactured by weight. The foamed concrete mortar composition for floating floor structural layers which has a non-combustible, heat insulation, heat insulation, and sound absorption and sound function obtained by the manufacturing method of Claim 1 characterized by the above-mentioned.