南华大学学报：自然科学版2011，Vol.25Issue(2)：100-105,6.
滞洪区路堤改良路基填土CBR试验研究
The Study of CBR Test of Improved Soils of Embankment in Flood Storage and Detention Areas
何忠意 1王海波 2徐文平3
作者信息
- 1. 广东天信电力工程检测有限公司,广东广州510600
- 3. 河海大学岩土工程科学研究所,江苏南京210098
- 折叠
摘要
Abstract
The sub-clay of embankment in flood storage and detention areas should be im- proved when being used as the subbase course or the sub-subbase course. In this paper, three soil improvement methods, such as adding lime-fly, cement-fly ash or cement-lime, are proposed at one time. Based on CBR index,experiments on improving these soils arecarried out, aiming at analyzing and discussing the compaction and the mix ratios of hard- ening agent on the CBR index. Test showed that, along with the compactedness, CBR index of three improved soils gained and then fell slightly or levelled off, and the optimum com- pactedness was in 93% ~ 96%. When cement or line content maintained constant,the CBR index of the line-fly ash-soils and the cement-fly-soils respectively gained firstly and de- creased subsequently with fly ash content, and as cement or line content kept constant, the CBR index of the line-fly ash-soils and the cement-lime-soils respectively gained then de- creased subsequently with line content. There are the optimum addition of fly ash or line to three improved soils and based on that the author recommends the mix ratios.关键词
水泥/粉煤灰/石灰/压实度/改良路基填土/CBR试验Key words
cement/fly ash/lime/compactedness/improved soils/CBR test分类
建筑与水利引用本文复制引用
何忠意,王海波,徐文平..滞洪区路堤改良路基填土CBR试验研究[J].南华大学学报：自然科学版,2011,25(2):100-105,6.
