摘要
以道路路基填筑材料铁尾矿为试验对象,选用水泥作为改良固化材料进行直接剪切试验,分析水泥掺加比例及养护龄期对固化铁尾矿剪切强度的影响规律。结果表明,水泥水化反应能够改善铁尾矿颗粒周界微观结构,主要通过提高微粒间的粘聚力使整体抗剪强度得到增强。
Taking iron tailings as road bed foundation material as test object,this paper carries out direct shear test using cement as an improved solidified material,analyzes the effect of cement blending ratio and curing age on the shear strength of solidified iron tailings.
作者
杨伟刚
孙兆云
李玉鑫
陈婷婷
YANG Wei-gang;SUN Zhao-yun;LI Yu-xin;CHEN Ting-ting(Shandong Hi-speed Company Limited,Shandong Jinan 250014 China;Shandong Transportation Institute,Shandong Jinan 250031 China;Key Laboratory of Expressway Maintenance Technology Ministry of Transport,Shandong Jinan 250102 China)
基金
山东省交通科技创新计划项目资助,项目编号:2016B43
关键词
铁尾矿
水泥改良
剪切强度
试验分析
irontailings
cementimprovement
shear strength
test analysis
