水利学报2017，Vol.48Issue(4)：488-495,8.DOI:10.13243/j.cnki.slxb.20160615
碾压混凝土中高掺石灰石粉与粉煤灰的耦合作用
Combination of high content limestone powder and fly ash used in RCC
摘要
Abstract
Combined with limestone powder and fly ash which is taking 60％ of the total replacement of cement,compressive strength,freeze-thaw resistance and impermeability performance of roller compacted concrete(RCC) with different proportion of limestone powder content to replace fly ash were investigated,With help of micro calorimeter,scanning electron microscope and mercury intrusion,the hydration process as well as microstructure of pastes was also analyzed.The results indicate that,when the replacing ratio of limestone powder was 50％ in composite paste,the mechanical property and durability of RCC were satisfactory.The coupling effect of limestone powder and fly ash led to hydration promotion and formation of denser microstructure,which resulted in great improvement in RCC performance.关键词
石灰石粉/粉煤灰/碾压混凝土/耦合作用Key words
limestone powder/fly ash/roller compacted concrete(RCC)/coupling分类
建筑与水利引用本文复制引用
杨梦卉,何真,杨华美..碾压混凝土中高掺石灰石粉与粉煤灰的耦合作用[J].水利学报,2017,48(4):488-495,8.基金项目
国家重点基础研究发展计划项目973计划(2013CB035901,2015CB655101) （2013CB035901,2015CB655101）
国家自然科学基金项目(51379163) （51379163）
