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弱膨胀土特性及路堤填筑控制标准的探讨
引用本文:张季如,尹光辉,李明海.弱膨胀土特性及路堤填筑控制标准的探讨[J].武汉理工大学学报,2003,25(1):37-39.
作者姓名:张季如  尹光辉  李明海
作者单位:1. 武汉理工大学
2. 恩施自治州公路管理局
基金项目:湖北省自然科学基金资助项目 (2 0 0 0 J14 1)
摘    要:对弱膨胀土进行不同击实功和含水量条件下的击实实验、CBR试验和50kPa荷载下的膨胀量度难,查明其含水量、干密度和膨胀特性对CBR值的影响。研究结果表明:弱膨胀土的CBR值主要受控于含水量和干密度,采用超过最佳含水量约3.0%的填筑含水量进行压实,压实度大于95%,CBR值可达到6.0%以上。最后对弱膨胀土用于路堤填筑的控制标准进行了探讨。

关 键 词:特性  控制标准  弱膨胀土  路堤填筑  含水量  干密度  膨胀量  CBR  试验研究  公路
文章编号:1671-4431(2003)01-0037-03
修稿时间:2002年9月2日

Behaviors of Weak Expansive Soil and Suggestion on Standard of Constructing Embankment
Zhang Jiru Yin Guanghui Li Minghai : Assoc. Prof.,School of Civil Engineering and Architecture,WUT,Wuhan ,China..Behaviors of Weak Expansive Soil and Suggestion on Standard of Constructing Embankment[J].Journal of Wuhan University of Technology,2003,25(1):37-39.
Authors:Zhang Jiru Yin Guanghui Li Minghai : Assoc Prof  School of Civil Engineering and Architecture  WUT  Wuhan  China
Affiliation:Zhang Jiru Yin Guanghui Li Minghai : Assoc. Prof.,School of Civil Engineering and Architecture,WUT,Wuhan 430070,China.
Abstract:The compaction tests, CBR tests and swell capacity tests of 50 kPa pressure for the weak expansive soil were carried out under the different compactive effort and water content. The aim is to investigate the influence of water content, dry density and expansibility on the CBR values of weak expansive soil. The results show that the CBR values of weak expansive soil are determined by the water content and dry density mainly. Its compaction factors are more than 95% and the CBR values exceed 6% while the compaction is carried out under the water content that is 3% more than its optimum water content. At last, the standard of controlling compaction of the weak expansive soil for constructing embankment is suggested.
Keywords:weak expansive soil  embankment constructing  standard  water content  dry density  swelling capacity  CBR
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