An aerated concrete block and a method for manufacturing and using the same

CN117865575BActive Publication Date: 2026-06-26HENAN POLYTECHNIC UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN POLYTECHNIC UNIV
Filing Date
2024-01-04
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The current autoclaved aerated concrete (AAC) preparation process suffers from low utilization of industrial solid waste, high energy consumption, and insufficient product strength. Traditional heating methods also lead to uneven heating and the formation of microcracks.

Method used

Aerated concrete blocks were prepared by replacing part of the cement with steel slag and self-made recycled micro powder, combined with microwave autoclaving and co-curing technology, and utilizing the uniformity of microwave heating and water vapor pressure to improve the strength of aerated concrete.

Benefits of technology

It effectively utilizes solid waste, reduces energy consumption, and improves the mechanical properties and uniformity of aerated concrete blocks, achieving a compressive strength of 7.8 MPa, thus solving the problems of insufficient strength and high energy consumption in traditional methods.

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Abstract

The application provides an aerated concrete block and a preparation method and application thereof. The aerated concrete block comprises the following raw material components in percentage by mass: 0-30% of steel slag, 0-30% of recycled micro powder, 40-50% of fly ash, 17-27% of cement, 1-5% of phosphogypsum, and 0.04-0.12% of aluminum powder paste in the total mass of the above raw materials. The application improves the performance of the aerated concrete by using the steel slag and the self-prepared recycled micro powder, and the aerated concrete is prepared by using a microwave autoclaving and curing process, so that the solid waste is effectively utilized, the environmental pollution is reduced, the resources are saved, the energy consumption is reduced by the curing method, the method is green and environment-friendly, and the time cost is saved. Not only the high value of the four kinds of solid waste, i.e., the recycled micro powder, the steel slag, the fly ash and the phosphogypsum, is realized, but also the problem of long curing time in the curing process is solved, and the qualified autoclaved aerated concrete is prepared, which can be widely used in the building material industry.
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