高液限土路堤掺砂改良路用特性研究  

Road performance of high liquid limit soil embankment mixed with sand for improvement

作　　者：许海亮 何兆才 肖剑 刘彦军 禄苗苗 XU Hai-liang;HE Zhao-cai;XIAO Jian;LIU Yan-jun;LU Miao-miao(School of Civil Engineering,North China University of Technology,Beijing 100144,China;China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Beijing 102600,China;China Metallurgical Transportation Construction Group Co.,Ltd.,Beijing 100028,China)

机构地区：[1]北方工业大学土木工程学院,北京100144 [2]中铁第五勘察设计院集团有限公司,北京102600 [3]中冶交通建设集团有限公司,北京100028

出　　处：《河南城建学院学报》2019年第5期6-10,共5页Journal of Henan University of Urban Construction

摘　　要：对贵州某高速公路高液限土进行掺砂改良室内试验研究,得到不同掺砂率下路用特性参数的变化规律,并以强度指标作为最终评价标准,确定了最优掺砂率。结果表明:机制砂掺量对高液限土的黏聚力影响较大;高液限土路堤的最佳掺砂率为8%~10%。The laboratory test research on sand mixing improvement for high liquid limit soil of a highway in Guizhou was carried out,and the variation law of road performance parameters under different sand mixing rates was obtained.Taking strength index as the final evaluation standard,the optimal sand mixing rate was determined.The results show that the amount of machine-made sand has a great influence on the cohesion of soil with high liquid limit.The optimum sand mixing rate for high liquid limit embankment is 8%~10%.The research results can provide reference for similar research on road performance improvement with high liquid limit soil mixed with sand.

关 键 词：高液限土路堤 掺砂改良 路用特性 最佳掺砂比 

分 类 号：U416[交通运输工程—道路与铁道工程]