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A platform for research: civil engineering, architecture and urbanism
ALL-SOLID WASTE-BASED CARBONATED UNBURNED LIGHTWEIGHT AGGREGATE AND PREPARATION METHOD THEREOF
The present invention is proposed to disclose a method for preparing an all-solid waste-based carbonated unburned lightweight aggregate. The method includes the following steps: (1) subjecting an active component type solid waste, a lightweight filling type solid waste, and an alkali activation type solid waste to grinding and mixing to obtain a mixed solid waste powder; and (2) subjecting the mixed solid waste powder and water to granulation to obtain particles, and subjecting the particles to precuring and mineralization curing with CO2 to obtain the all-solid waste-based carbonated unburned lightweight aggregate. The active component type solid waste includes blast furnace slag, steel slag, or furnace slag. The lightweight filling type solid waste includes fly ash, river silt, or red mud. The alkali activation type solid waste includes carbide slag. In the present invention, all raw materials are selected from solid wastes, the alkali activation type solid waste is used as an alkali activator to replace traditional quicklime, sodium hydroxide, and sodium silicate, and a CO2 mineralization strengthening technology is used, so that the carbon fixation potential of the solid wastes is fully exerted, natural resources are saved, and the all-solid waste-based carbonated unburned lightweight aggregate prepared has excellent compressive strength.
ALL-SOLID WASTE-BASED CARBONATED UNBURNED LIGHTWEIGHT AGGREGATE AND PREPARATION METHOD THEREOF
The present invention is proposed to disclose a method for preparing an all-solid waste-based carbonated unburned lightweight aggregate. The method includes the following steps: (1) subjecting an active component type solid waste, a lightweight filling type solid waste, and an alkali activation type solid waste to grinding and mixing to obtain a mixed solid waste powder; and (2) subjecting the mixed solid waste powder and water to granulation to obtain particles, and subjecting the particles to precuring and mineralization curing with CO2 to obtain the all-solid waste-based carbonated unburned lightweight aggregate. The active component type solid waste includes blast furnace slag, steel slag, or furnace slag. The lightweight filling type solid waste includes fly ash, river silt, or red mud. The alkali activation type solid waste includes carbide slag. In the present invention, all raw materials are selected from solid wastes, the alkali activation type solid waste is used as an alkali activator to replace traditional quicklime, sodium hydroxide, and sodium silicate, and a CO2 mineralization strengthening technology is used, so that the carbon fixation potential of the solid wastes is fully exerted, natural resources are saved, and the all-solid waste-based carbonated unburned lightweight aggregate prepared has excellent compressive strength.
ALL-SOLID WASTE-BASED CARBONATED UNBURNED LIGHTWEIGHT AGGREGATE AND PREPARATION METHOD THEREOF
WANG TAO (author) / FANG MENGXIANG (author) / WANG WENKANG (author) / GAO XIANG (author) / LUO ZHONGYANG (author) / CEN KEFA (author)
2024-07-25
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
ALL-SOLID-WASTE-BASED CARBONATED UNFIRED LIGHTWEIGHT AGGREGATE AND PREPARATION METHOD THEREFOR
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