矿产综合利用2024，Vol.45Issue(2)：30-35,6.DOI:10.3969/j.issn.1000-6532.2024.02.005
碱激发粉煤灰矿渣胶凝材料的流变性能
Rheological Properties of Alkali Activated Fly Ash Slag Cementitious Materials
摘要
Abstract
This is an article in the field of ceramics and composites.In order to study the early rheological properties of alkali-activated fly ash-slag cementitious system,the composite pastes with different mass ratios of fly ash(FA)to slag(GGBS)and alkaline activator content were prepared.The fluidity and rheological properties of the pastes were tested by mini-cone slump cone,Brookfield DV3T rheometer,respectively.Finally,the hydration exothermic rate of composite pastes with each ratio was tested by isothermal calorimeter.Results show that when FA/GGBS ratio is 3∶7,the fluidity of paste with 4％NaOH content is the lowest.With the increase of FA mass ratio and NaOH molar mass,the fluidity of alkali-activated FA-GGBS cementitious system increased,and the yield stress and plastic viscosity decreased.The growth of FA content decreases the early hydration rate significantly,while the increase of alkali activator content remarkably increases the peak rate of hydration heat release.关键词
陶瓷及复合材料/碱激发粉煤灰矿渣胶凝材料/流动度/流变性能/触变性/水化放热速率Key words
Ceramics and composites/Alkali-activated fly ash-slag cementitious materials/Fluidity/Rheological properties/Thixotropy/Hydration heat release rate分类
矿业与冶金引用本文复制引用
李莎莎,李刘蓓,吴伟,冯虎..碱激发粉煤灰矿渣胶凝材料的流变性能[J].矿产综合利用,2024,45(2):30-35,6.基金项目
国家自然科学基金资助项目(51709125) （51709125）
西藏自治区科技厅重点研发计划(XZ201901-GB-15)资助 （XZ201901-GB-15）
