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中等膨胀土填筑路堤的可行性试验研究
引用本文:张季如,管昌生.中等膨胀土填筑路堤的可行性试验研究[J].广西工学院学报,2002,13(4):1-4.
作者姓名:张季如  管昌生
作者单位:武汉理工大学土木工程与建筑学院,湖北,武汉,430070
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:对中等膨胀土进行不同击实功和含水量条件下的击实试验,CBR试验,收缩试验和50kPa荷载下的膨胀量试验,以查明其含水量,干密度和膨胀收缩特性对CBR值的影响,研究结果表明:中等膨胀土的CBR值主要受控于含水量和干密度,在最佳含水量附近压实虽可获得较高的压实度,但CBR均小于3.0%,增大含水量压实可使CBR值提高,但压实度难以达到90%,因此,中等膨胀土不宜直接用于填筑路堤。

关 键 词:试验研究  中等膨胀土  路堤  填筑  可行性  含水量  干密度  CBR  公路工程
文章编号:1004-6410(2002)04-0001-04
修稿时间:2002年9月1日

Testing research into practicability of constructing embankment with medium expansive soil
ZHANG Ji ru,GUAN Chang sheng.Testing research into practicability of constructing embankment with medium expansive soil[J].Journal of Guangxi University of Technology,2002,13(4):1-4.
Authors:ZHANG Ji ru  GUAN Chang sheng
Abstract:The compaction tests, CBR tests, shrinkage test and swell capacity tests of 50kPa pressure for the medium expansive soil were carried out under the different compactive efforts and water content The aim is to know the influence of water content, dry density, expansibility and shrinkage on the CBR values The results have shown that the CBR values of medium expansive soil are mainly determined by the water content and dry density The CBR values are lower than 3 0 % while the compaction is carried out near its optimum water content The CBR values increase by raising the compaction water content that is more than its optimum water content, but the degree of compaction often falls short of 90% It is suggested that the medium expansive soil is unfit to be used for constructing embankment directly
Keywords:medium expansive soil  embankment construction  practicability  water content  dry density  CBR
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