硅酸盐学报2017，Vol.45Issue(2)：260-267,8.DOI:10.14062/j.issn.0454-5648.2017.02.13
石灰石对尾矿/矿渣复合碱激发胶凝材料力学性能及微观结构的影响
Effect of Limestone Powder on Strength and Microstructure of Geopolymer
摘要
Abstract
The effect of limestone powder on the strength, reaction products and microstructure of geopolymer was investigated. The results show that limestone powder has a significant influence on the strength of geopolymer, but some differences between 3-d and 28-d strengths occur. There is no observable reduction of the 3-d strength with limestone powder of less than 15% (in mass), but a remarkable deterioration of 3-d strength appears at a greater dosage of limestone powder due to the presence of micrometer macropores and the weakened interface between limestone particles and gels. The 28-d strength decreases gradually with increasing the dosage of limestone powder. Little novel product phases appear and limestone powder still exists as calcite. The porosity of 3-d geopolymer with limestone powder of less than 15% decreases, while the value of porosity is similar in the 28-d geopolymer with and without limestone powder.关键词
碱激发胶凝材料/铝土矿选尾矿/矿渣/石灰石粉/强度/反应产物/微观结构Key words
geopolymer/bauxite tailing/slag/limestone powder/strength/products/microstructure分类
化学化工引用本文复制引用
叶家元,张文生,史迪..石灰石对尾矿/矿渣复合碱激发胶凝材料力学性能及微观结构的影响[J].硅酸盐学报,2017,45(2):260-267,8.基金项目
国家自然科学基金项目(51572252)和国家“863”计划(2015AA034701)资助。 （51572252）
