Aerated concrete prepared by using granite waste rock powder and a preparation method thereof

By calcining granite waste powder with clay, coal gangue, carbide slag, and red mud at high temperature and then treating it with saline-alkaline wastewater, the problem of poor dispersibility of granite waste powder in concrete was solved, the strength and environmental friendliness of aerated concrete were improved, and the high-value utilization of industrial solid waste was realized.

CN120794447BActive Publication Date: 2026-02-17ZHUOXINDA (GUANGDONG) NEW MATERIALS CO LTD
2 Cites 0 Cited by

Patent Information

Application Number
CN202510925061.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-04
Publication Date
2026-02-17
Estimated Expiration
2045-07-04

AI Technical Summary

Technical Problem

Granite waste powder tends to clump and has poor dispersibility in concrete, resulting in insufficient uniformity and strength of the concrete, and its treatment process may cause secondary pollution.

Method used

Granite waste powder is mixed with clay, coal gangue, carbide slag, and red mud and calcined at 1050-1250℃ to form a ceramic structure. Then, saline-alkaline wastewater is added, mixed, and ball-milled to produce granite-based slurry. This slurry is then mixed with cement, gypsum, water-reducing agent, and foaming agent, and finally steam-cured.

Benefits of technology

This technology enables the efficient dispersion of granite waste powder in concrete, improves the strength and durability of aerated concrete, promotes the resource utilization of industrial solid waste, and reduces dependence on natural resources.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application relates to an aerated concrete prepared from granite waste rock powder and a preparation method thereof. The aerated concrete of the application takes granite waste rock powder (skeleton effect), calcium carbide slag (calcic material), clay (sintering promotion), red mud (gel filling) and coal gangue (siliceous material) as core raw materials, replaces traditional natural sandstone and lime, realizes industrial solid waste resource utilization, conforms to the development direction of green building materials, and significantly reduces the dependence on natural resources.
Need to check novelty before this filing date? Find Prior Art