石灰和砾砂改良红黏土试验研究  

Experimental Study on Lime and Gravel Sand Modified Red Clay

作　　者：盘霞[1] 黄强 PAN Xia;HUANG Qiang(Guangxi Transport Vocational and Technical College,Nanning,Guangxi,530023;Guangxi Nanning Survey and Design Institute of Pearl River Commission,Nanning,Guangxi,530007)

机构地区：[1]广西交通职业技术学院,广西南宁530023 [2]广西珠委南宁勘测设计院,广西南宁530007

出　　处：《西部交通科技》2019年第4期70-72,共3页Western China Communications Science & Technology

基　　金：广西高校中青年教师基础能力提升项目“广西高速铁路红黏土路基填筑性能改良试验研究”(项目编号:KY2016YB670)

摘　　要：文章采用石灰和砾砂改良红黏土,对改良土进行击实试验、无侧限抗压强度试验、自由膨胀率试验等室内试验研究。结果表明:石灰改良红黏土在无水的情况下可以取得较好效果,最佳掺灰率为6%;砾砂改良红黏土效果较明显,最佳掺砂率为30%。This article uses the lime and gravel sand to improve the red clay,and conducts the indoor experiments on improved soil such as compaction test,unconfined compressive strength test and free expansion rate test.The results show that the lime-modified red day can achieve better results in the absence of water,and the best ash-mixing rate is 6%;the effect of gravel sand improved red clay is obvious,and the best sand-mixing rate is 30%.

关 键 词：改良土 掺灰率 掺砂率 

分 类 号：U416.03[交通运输工程—道路与铁道工程]