Manufacturing technology of recycled micropowder aerated concrete building block

Abstract

The invention discloses a manufacturing technology of recycled micropowder aerated concrete building block. The recycled micropowder aerated concrete building block is prepared by mixing the followingraw materials in parts by weight: 4-6 parts of coal ash, 8-10 parts of cement, 8-10 parts of quick lime, 5-7 parts of mineral powder, 4-6 parts of silica fume, 4-6 parts of slaked lime, 1-3 parts ofsodium sulfate, 0.6-0.8 part of lignin, 0.6-0.8 part of triethanolamine, 0.6-0.8 part of sodium hydroxide, 0.6-0.8 part of calcium hydroxide, 1 part of a water reducing agent, a foam stabilizer, 1 part of a retarder, and recycled micropowder. According to the technology, slurry falling in pouring and offcuts falling in blank cutting are recycled to a waste slurry pool, and then pumped into a pouring stirrer for reutilization, so that not only cannot the raw materials be wasted, but also the viscosity can be increased after repeated stirring, and further the strength of the finished building block can be enhanced; steam exhausted by an autoclave and waste water can be reutilized, so that resources and cost are saved, and meanwhile, the improvement of resource conversion rate of building wastes and the popularization of the technology are facilitated.

Description

technical field [0001] The invention relates to the construction field, in particular to a manufacturing process of recycled micropowder aerated concrete blocks. Background technique [0002] Autoclaved aerated concrete blocks have been widely used wall materials. The existing autoclaved aerated concrete block products use cement and lime as the main cementitious materials, supplemented by mineral powder and fine sand as filling materials. Mineral powder is a gas-generating material, which is made through grinding, stirring, gas-generating, molding, and high-temperature and high-pressure curing. The materials used in the entire production process are all natural materials, and natural materials are short-term non-renewable materials. Excessive development will seriously affect the natural environment, and the cost of equipment used in production is huge, and the production energy consumption is large. Construction waste refers to the construction units, construction units n...

AI Technical Summary

Problems solved by technology

With the development of urbanization, the discharge of construction waste in engineering construction is increasing year by year, and its recycling work is progressing slowly, resulting in a low utilization rate. At present, the rough landfill treatment occupies a large amount of land resources. It not only wastes manpower and material resources to maintain the discharge site, but also has an impact on vegetation and groundwater, leading to secondary pollution of the environment

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