摘要
针对某高速铁路地基中低黏土矿物泥岩进行不同初始含水率与不同干密度条件下的膨胀力试验,结果表明:规范中判定为无膨胀性的泥岩实质上是具有一定的膨胀性;在干密度不变的条件下,膨胀力随着初始含水率的增大而减小;在初始含水率不变的条件下,膨胀力随着干密度的增大而增大。并且根据试验结果拟合出适用于低黏土矿物泥岩的考虑干密度与初始含水率的膨胀力公式。
A high-speed railway in the low ground clay minerals mudstone different initial moisture content and expansion force dry density test under different conditions,the results showed that:the specification is determined that no expansion of the shale is essentially a certain expansion.Under the same conditions dry density,the expan-sion force with increasing initial water content decreases.In the initial moisture content of the same conditions,the expansion force along with the dry density increases.And expansive force fitted formula for low clay mineral consid-eration shale dry density and initial water content of the test results.
作者
王冲
王起才
张戎令
马丽娜
薛彦瑾
WANG Chong;WANG Qi-cai;ZHANG Rong-ling;MA Li-na;XUE Yan-jin(School of Civil Engineering,Lanzhou Jiaotong University;Road and Bridge Engineering Disaster Prevention Technology Local Joint National Engineering Laboratory;Gansu Provincial Road and Bridge and Underground Engineering Laboratory3 , Lanzhou 730070, P. R. China)
出处
《科学技术与工程》
北大核心
2016年第30期284-287,共4页
Science Technology and Engineering
基金
教育部长江学者和创新团队滚动支持发展计划(IRT_15R29)
中国铁路总公司科技研究计划(Z2015-G001)资助
关键词
泥岩
低黏土矿物
膨胀力
膨胀土
mudstone
low clay mineral
swelling capacity
expansive soil
