Bulletin of the Chinese Ceramic Society, Volume. 42, Issue 11, 4072(2023)
Mechanical Property of Bottom Ash-Tuff Based Geopolymer
In order to explore the resource utilization prospects of municipal solid waste incineration bottom ashthe feasibility of preparing geopolymer from waste incineration bottom ash and tuff was investigated. The effects of bottom ash contentsilicon-sodium molar ratio and alkali equivalent content on the properties of bottom ash-tuff based geopolymer were studied through uniaxial compressive strength testXRDFTIR and SEM. Test results show that the curing time has a great influence on the physical and mechanical properties of bottom ash-stuff based geopolymer. The optimal process parameters of bottom ash-stuff based geopolymer are bottom ash content of 20%the silicon-sodium molar ratio of 1.7 and the alkali equivalent content of 8%. Bottom ash-stuff based geopolymer has a uniaxial compressive strength of 23.2 MPa and bulk density of 1.56 g/cm3 for curing 28 d. The main phases of bottom ash-stuff based geopolymer are quartzsanidineyeelimite and calcite. A large number of aluminosilicate gels are generated during the geopolymerization processresulting in the microscopic structure of bottom ash-stuff based geopolymer shows a binding structure of small and larger particles. Toxicity characteristic leaching procedure of heavy metals in bottom ash-stuff based geopolymer meets the requirements of safety and environmental protection.
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WU Jianxun, JIANG Jian, YANG Yonghao, KONG Yu, ZHAN Xinyuan, LUO Zhihao, CHEN Liang. Mechanical Property of Bottom Ash-Tuff Based Geopolymer[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(11): 4072
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Received: Jul. 13, 2023
Accepted: --
Published Online: Dec. 11, 2023
The Author Email: Jianxun WU (wujx3120@ecepdi.com)
CSTR:32186.14.