摘要
研究了不同轻质颗粒对贫胶凝砂砾石耐久性的影响。试验结果表明:陶砂与100目橡胶粉可改善贫胶凝砂砾石的抗冻性,200次冻融循环后,其抗压强度损失为6.97%与6.29%;陶砂与EPS粒子可有效改善贫胶凝砂砾石的抗渗性,采用Torrent法测其表面气体渗透系数分别为1.515×10^(-16)m^2与1.292×10^(-16)m^2;掺加陶砂的贫胶凝砂砾石的干燥收缩为205×10^(-6),小于基准组的245×10^(-6)可稍微降低其变形性能。
It studied the effects of the durability of lean cemented sand and gravel （CSG） by adding the lightweight particles.The results shows that ceramic sand and rubber powder 100 mesh can improve freezing resistance of the lean CSG,After 200 times freeze-thaw cycle, the loss of compressive was 6.97% and 6.29% respectively.And ceramic sand and EPS particle can improve anti-permeability of the lean C SG.The permeability of lean CSG adding ceramic sand and EPS particle respectively was 1.515×10^-6 m^2 and 1.292 ×10^-16 m^2 by Torrent rule.The drying shrinkage of lean C SG adding ceramic sand was 205×10^-4, less than 245 ×10^-6 of control group.
出处
《混凝土》
CAS
北大核心
2017年第4期104-107,共4页
Concrete
基金
黑龙江省水利科技厅项目"严寒地区胶凝砂砾石坝材料特性及评价方法研究"(201311)
关键词
贫胶凝砂砾石
耐久性
轻质颗粒
lean cemented sand and gravel
durability
lightweight particles
