西南交通大学学报2012，Vol.47Issue(4)：580-585,596,7.DOI:10.3969/j.issn.0258-2724.2012.04.007
高液限土最佳掺砂比的确定
Determination of Optimal Sand Content for Improving High Liquid Limit Soil
摘要
Abstract
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.关键词
高液限土/掺砂改良/最佳掺砂比/加州承载比Key words
high liquid limit soil/ soil improvement with sand/ optimal sand content/ CBR ( California bearing ratio)分类
建筑与水利引用本文复制引用
程涛,洪宝宁,刘鑫,黄漫..高液限土最佳掺砂比的确定[J].西南交通大学学报,2012,47(4):580-585,596,7.基金项目
国家自然科学基金资助项目(51079052) （51079052）
广东省交通运输厅交通科技项目(200903005) （200903005）
