摘要
为确定最佳掺砂比,按细颗粒含量、液限、素土的CBR值(加州承载比)分别对高液限土进行分类,按掺砂改良后CBR值为6分别确定不同分类高液限土最佳掺砂比的范围,再综合考虑这3种要素确定最佳掺砂量.试验结果表明:细颗粒含量对CBR值的影响大于液限和黏粉比;黏粉比越小,CBR值越大;广东云罗高速沿线高液限土的最佳掺砂比约为20%;不同性质高液限土应采取弃方、掺砂改良和直接填筑3种不同的处理方法.
In order to determine the optimal sand content, high liquid limit soils were classified respectively based on fine particle content, liquid limit and soil CBR （California bearing ratio） value, the range of the optimal sand content for different types of high liquid limit soils were ascertained. The classification standard is that CBR value of improved soils is equal to 6. The optimal sand content was determined by comprehensively considering the three different factors. The experimental result shows that compared with liquid limit and clay-silt ratio, the effect of fine particle content on CBR value is great. The CBR value decreases with the increase of clay-silt ratio. The optimal sand content of high liquid limit soil along Yunfu-Luoding expressway is about 20%. To high liquid limit soils with different properties, different treatment measures should be adopted.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2012年第4期580-585,596,共7页
Journal of Southwest Jiaotong University
基金
国家自然科学基金资助项目(51079052)
广东省交通运输厅交通科技项目(200903005)
关键词
高液限土
掺砂改良
最佳掺砂比
加州承载比
Ke high liquid limit soil
soil improvement with sand
optimal sand content
CBR（California bearing ratio）
