Heat-insulation sound-insulation light-weight high-strength aerated concrete building block and producing method thereof

Abstract

The invention discloses a heat-insulation sound-insulation light-weight high-strength aerated concrete building block and a producing method thereof. The building block is made from special concrete materials by molding, pouring and curing; the the special concrete materials include the following components in percentage by weight: 25-30 parts of cement, 26-31 parts of coal ash, 15-25 parts of ceramsite, 5-8 parts of expanded perlite, 18-25 parts of fresh water and 2-3 parts of cement foaming agent; and the green body of the aerated concrete building block is prepared by the steps of preparation of slurry, preparation of aerated concrete pouring material, pre-solidification molding of a pouring gland, pretreatment after pre-solidification molding, steam heating solidification and maintenance and removal of the die. A foam-slurry mixing device is used for mixing foams with primary slurry to form entraining slurry, the density of the entraining slurry is controlled by adjusting the input quantity of foams, and ceramisite and expanded perlite are added regularly and quantitatively to obtain the pouring material; furthermore, pouring is completed in the stirring state, therefore, the strength of the produced product is equivalent to that of the existing products, but the sound-insulation, heat-insulation and density performance indexes are prior to those of the existing products, and the dispersion is small.

Description

【Technical field】 [0001] The invention relates to an aerated concrete block, in particular to an aerated concrete block containing ceramsite, which belongs to building wall materials. 【Background technique】 [0002] With the development of society and the improvement of people's awareness of environmental protection, fire protection and safety, people cherish the land more. The country has issued policies to limit the production of solid clay bricks, and encourage new energy-saving materials such as high-strength hollow bricks and unburned bricks. Wall material, ceramsite aerated concrete block is the most advanced light-weight high-strength wall brick at present. It has good heat insulation, sound insulation, fireproof and moisture-proof performance, and is in line with the national energy-saving and material-saving industrial policy. It is an ideal light-weight and high-strength unburned brick body for the walls of high-rise buildings in the future. A ceramsite aerated bl...

AI Technical Summary

Problems solved by technology

Compared with solid bricks or ordinary concrete blocks, the obtained ceramsite aerated concrete blocks have light weight, high strength and good sound insulation and heat insulation properties, but it is found that in ceramsite aerated concrete blocks, The distribution of the air is not uniform, and the size and distribution of the pores are not uniform

After testing, the dispersion of strength, density, sound insulation and heat insulation performance of ceramsite aerated concrete blocks of the same specification is too large, and the density of the product is too high. Foaming agent is also needed in the production process of the blocks , activator, water reducer, coagulation accelerator and other chemical additives will cause some pollution to the environment

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