摘要
依托临海高等级公路南通段的工程设计,对沿线的土样进行了物理状态测试、颗料分析、液塑限分析、击实特性试验、膨胀性分析,及承载比(CBR)等试验,确定了现场的土质为粉粒为主的级配不良土,不能直接作为路基填料使用。对比分析了作为路基填料的几种土质改良方案的承载比试验结果,及作为路面结构底基层材料的几种土质改良方案的无侧限抗压试验结果,提出了路基填料及路面结构底基层材料的推荐方案。
Based on the project design of Nantong section in Lin-Hai Highway,the physical state,grain composition,liquid-plastic limit,compaction characteristics and expandability of the soil samples along the way were analyzed,meanwhile,the California Bearing Ratio test(CBR) was carried out.The test results indicated that,the spot soil was poorly-graded silt soil,which can’t be directly used as roadbed and road subbase.Through the comparative analysis of CBR results of several improvement programs of soil as roadbed filler and the unconfined compression test results of different treatment methods to improve soil used as road subbase,a recommended proposal of roadbed filler and pavement structure subbase materials is put forward.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2013年第2期220-223,共4页
Journal of Chongqing Jiaotong University(Natural Science)
基金
重庆市教育委员会资助项目(KJ080403)
重庆交通大学(桥梁)结构工程重点实验室开放基金项目(CQSLBF-Z10-1)
关键词
公路
粉土
路基
底基层
highway
silt
roadbed
subbase
