水利水电科技进展2018，Vol.38Issue(3)：54-59,6.DOI:10.3880/j.issn.1006-7647.2018.03.010
硅灰和石灰石粉对碾压混凝土抗裂性能的影响
Effect of silica fume and limestone powder on crack resistance property for roller compacted concrete
摘要
Abstract
To investigate the effect of silica fume and limestone powder on the crack resistance for roller compacted concrete (RCC) and its mechanism, silica fume was added into the limestone powder-fly ash-based RCC. Indicators such as the split tensile strength, tension-compression ratio and elastic modulus-compression ratio were used for the experimental analysis with the technology of scanning electron microscopy (SEM), thermal gravimetric analysis (TGA) and mercury injection (Hg). It is suggested that adding 5% silica fume into the limestone powder-fly ash-based RCC of 40% admixture can increase the density of the microstructures, optimize the pore structures and effectively improve the overall crack resistance performance of the material.关键词
碾压混凝土/石灰石粉/硅灰/劈拉强度/拉压比/弹强比/抗裂性能Key words
roller compacted concrete/limestone powder/silica fume/split tensile strength/tension-compression ratio/elastic modulus-compression ratio/crack resistance property分类
建筑与水利引用本文复制引用
徐世烺,葛唯..硅灰和石灰石粉对碾压混凝土抗裂性能的影响[J].水利水电科技进展,2018,38(3):54-59,6.基金项目
国家重点基础研究发展计划("973"计划)(2013CB035901) （"973"计划）
