- 目录
- 建筑石膏与胶凝材料
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粉煤灰-矿渣基地聚合物胶砂性能研究
作者：程国东1，2，3，黄天勇1，2，刘泽3，王栋民3
[1.固废资源化利用与节能建材国家重点实验室，北京 100041；2.北京市预拌砂浆工程技术研究中心，北京 100041；
3.中国矿业大学（北京） 化学与环境工程学院，北京 100083]
摘要：通过正交试验研究了粉煤灰与矿粉质量比（粉矿比）、水玻璃模数、水胶比3个因素对粉煤灰-矿粉基地聚合物胶砂性能的影响规律，并对样品的微观性能进行测试。结果表明：水胶比为最显著影响因素，粉矿比为显著影响因素，水玻璃模数的影响最小，当粉矿比为3∶7，水玻璃模数为1.6，水胶比为0.35时，地聚合物胶砂的28 d抗折和28 d抗压强度最高，分别为7.8、57.2 MPa。
关键词：粉煤灰；矿粉；地质聚合物；胶砂试验；力学性能；微观结构
中图分类号：TU526 文献标识码：A 文章编号：1001-702X（2020）01-0050-04
Research on the performance of ash-slag based geopolymer mortar
CHENG Guodong1，2，3，HUANG Tianyong1，2，LIU Ze3，WANG Dongmin3
[1.State Key Laboratory of Solid Waste Reuse for Building Materials，Beijing 100041，China；
2.Beijing Engineering and Technology Research Center of Dry-mixed Mortar，Beijing 100041，China；
3.School of Chemical and Environmental Engineering，China University of Mining & Technology（Beijing），Beijing 100083，China]
Abstract：The effects of the ratio of fly ash to slag，water glass modulus and water-binder ratio on the properties of geopolymer mortar in fly ash-slag based geopolymer were studied by orthogonal test，and the microscopic properties of the samples were tested. The results show that the water-to-binder ratio is the most significant factor，and the ratio of fly ash to slag is a significant factor，the influence of the modulus of water glass is the smallest. When the ratio of fly ash to slag is 3∶7，the modulus of water glass is 1.6，and the ratio of water to rubber is 0.35，the 28 d flexural strength and 28 d compressive strength of the geopolymer mortar are 7.8 MPa and 57.2 MPa，respectively.
Key words：fly ash，blast furnace slag，geopolymer，mortar strength test，physical properties，microstructure