郑州大学学报（工学版）2013，Vol.34Issue(1)：5-9,5.DOI:10.3969/j.issn.1671-6833.2013.01.002
水泥土冻胀特性试验研究
Experimental Study on Frost Heave Properties of Cement-improved Soil
摘要
Abstract
In order to reveal the law that the cement-improved soil controls frost heave, experimental research on frost heave properties were conducted with two typical soils in Nanjing region, clay and sand, mixed with the cement. The experiments show that: frost heave coefficient of clay or sand cement-improved soil declines exponentially with mixing ratio of cement increasing, enhances linearly with moisture content increasing, declines exponentially with instar increasing, enhances linearly with the cold junction temperature increasing, declines exponentially with load increasing besides there is an optimal mixing ratio, while it is the optimal mixing ratio, frost heave coefficient of cement-improved soil are lower, the optimal mixing ratio of clay and sand in Nanjing region is 10% and 5% . By comprehensive analysis, when using the freezing method, before freezing , a certain amount of cement can be mixed into the clay or sand, and it is necessary to place it for a period of time, which can reduce frost heave and thaw subsidence, thus reducing the harm to engineering and the environment.关键词
水泥土/人工冻土/水泥掺入比/冻胀Key words
cement-improved soil/artificial frozen soil/mixing ratio of cement/frost heave分类
建筑与水利引用本文复制引用
鲍俊安,杨平,王许诺..水泥土冻胀特性试验研究[J].郑州大学学报（工学版）,2013,34(1):5-9,5.基金项目
国家自然科学基金资助项目(51278251) （51278251）
南京地铁集团有限公司科研项目(D3-XY-0001-1206) （D3-XY-0001-1206）
