Coal gangue baking-free brick with mouldproof and antibacterial effects

Abstract

The invention discloses a coal gangue baking-free brick with mouldproof and antibacterial effects. The coal gangue baking-free brick is prepared from coal gangue, basalt powder, electrolytic manganese residue, hemp fiber, chitosan, red mud, limestone, aluminum dihydrogen phosphate, water glass, modifier, cementing material, boron mud and a proper amount of water. The baking-free brick is easy to produce and low in cost. Through the synergistic effect of different materials, the prepared baking-free brick is high in strength, low in heat conductivity coefficient, good in anti-crack effect, energy-efficient and environmentally friendly, and meets constructional engineering requirements and the requirement for environment protection; besides good mouldproof, antibacterial and pest killing effects, excellent performances including light weight, high strength, heat insulation, sound insulation and low water absorbability are realized; the baking-free brick has excellent high and low temperature resistance, the problems of ordinary baking-free bricks of being poor in crack resistance and freezing resistance are solved, and the application range of the baking-free brick is widened greatly.

Description

technical field [0001] The invention relates to the field of building material production, in particular to a coal gangue burn-free brick with anti-mildew and anti-bacterial effects. Background technique [0002] Coal gangue is one of the largest industrial solid wastes in China. At present, more than 3 billion tons have been stockpiled in the country, covering an area of ​​about 1.2×104 hectares. Moreover, the annual discharge of coal gangue is equivalent to about 10% of the coal production in that year. The annual emission rate will be greater than 160 million tons. Stacking coal gangue not only takes up a lot of land, but also pollutes the environment and affects people's lives and health. In addition, coal gangue often spontaneously combusts, which not only wastes energy, but also produces a lot of smoke and harmful gases. Spontaneously combusted coal gangue will also deflagrate under certain conditions and induce collapses and landslides, directly endangering nearby...

AI Technical Summary

Problems solved by technology

Due to work quality problems and thin exterior walls, exterior wall leakage and mildew have become a common problem in building quality, which seriously affects the use of buildings and leads to a decline in durability.