生石灰与水泥处治过湿土路基填料性能试验研究
Experimental Study of Performance of Over-wet Soil Subgrde Filler Treated with Quick Lime and Cement
郭宏崇1
作者信息
- 1. 沁县交通运输局,山西 长治 046400
- 折叠
摘要
为了改善过湿土路基填料的性能,选用生石灰、水泥作为改良剂,对生石灰、水泥改良过湿土路基填料的性能进行了对比试验研究.研究结果表明:相比于素过湿土,石灰或水泥改良过湿土的最佳含水量、无侧限抗压强度、回弹模量值均得到了显著提升,且均随石灰或水泥掺量的增加而增加;石灰改良过湿土虽然一定程度上提高了过湿土的CBR值,但仍不满足相关规范对于一级公路、高速公路路基填料的要求,水泥改良过湿土的CBR值在掺入水泥后显著提升,能够较好满足规范要求;石灰改良过湿土的最佳含水量要优于水泥改良过湿土,水泥对于过湿土 CBR值、无侧限抗压强度、回弹模量的改善效果要显著优于石灰.
Abstract
To improve the performance of the over-wet soil subgrade filler,using quick lime and cement as the modifiers,the performance of the modified over-wet soil subgrade filler was compared and studied by experiments.The results showed that compared with plain over-wet soil,the optimum water content,unconfined compressive strength,and resilience modulus of the modified over-wet soil were improved and increased with the increase of the content of quick lime or cement.Although the CBR value of the over-wet soil treated with quick lime was improved,it still could not meet the specification requirements of subgrade fillers for class-1 highways and expressways.The CBR value of the cement-treated over-wet soil was significantly increased and met the specification requirements.The optimum water content of over-wet soil treated with quick lime was higher than that treated with cement,however,the cement-treated over-wet soil had better CBR value,unconfined compressive strength,and resilience modulus.
关键词
生石灰/水泥/过湿土/路基填料Key words
quick lime/cement/over-wet soil/subgrade filler引用本文复制引用
出版年
2024
NETL
NSTL
万方数据