塞内加尔天然砂土的工程性质及应用研究  

Study on Engineering Properties and Applications of Natural Sand in Senegal

作　　者：单伶燕 鞠志成 周兴业[1] 谢国瑞[1] SHAN Lingyan;JU Zhicheng;ZHOU Xingye;XIE Guorui(Research Institute of Highway of Ministry of Transport,Beijing 100088,China;China Road&Bridge Corporation,Beijing 100011,China)

机构地区：[1]交通运输部公路科学研究院,北京100088 [2]中国路桥工程有限责任公司,北京100011

出　　处：《路基工程》2021年第6期30-34,共5页Subgrade Engineering

基　　金：中国路桥工程有限责任公司科技研发项目(2017110043001118)。

摘　　要：选择塞内加尔某公路项目沿线的7种天然砂土开展材料性质试验,按照相关规范要求进行土质工程分类,给出用于公路工程的使用建议。结果表明:塞内加尔天然砂土塑性指数为5.5~8.8,属于低塑性土;主要化学组成为石英,平均含量可达98.6%;根据法国标准可将7种天然砂土划分为B1,B5s两大类,采取相应措施后可用于路基填筑。研究成果对于塞内加尔公路建设具有一定参考价值。The seven kinds of natural sand used in highway construction project in Senegalalong were selected to carry out material property test.The engineering soil classification was carried out according to the requirements of relevant codes and the application suggestions for highway engineering were given.The results show that the plasticity index of the natural sand in Senegal is 5.5~8.8,which is a typical soil of low plasticity;the main chemical composition is quartz,with an average content of 98.6%.According to the French standard,seven kinds of natural sand can be divided into two categories of B1 and B5s,which can be used for subgrade filling after taking corresponding measures.The research results have certain reference value for highway construction in Senegal.

关 键 词：塞内加尔 道路工程 路基填料 天然砂土 工程土质分类 工程应用 

分 类 号：U414[交通运输工程—道路与铁道工程]