土工基础

›› 2013, Vol. 27 ›› Issue (3): 124-126.

• 工程实录 • 上一篇    下一篇

低液限粉土压实特性试验研究

姚彩霞1，姚 晓2   

  1. (1.南宁市城乡建设委员会，南宁 30028；2.广西区建筑工程质量检测中心，南宁 30004)
  • 收稿日期:2012-12-20 出版日期:2013-06-20 发布日期:2013-06-26
  • 作者简介:姚彩霞 (1978-)，女，工程师，研究方向为道桥建设、工程地质等工作。

Studies on the Compaction Properties of Low Liquid Limit Silty Soils

YAO Caixia1, YAO Xiao2   

  1. (1.Nanning Urban and Rural Development Commission, Nanning, 530028;2.Guangxi Construction Testing Center, Nanning, 530004)
  • Received:2012-12-20 Online:2013-06-20 Published:2013-06-26

摘要： 针对低液限粉土的压实特性，进行了不同的击实试验，深入研究了低液限粉土的压实机理。试验结果表明，粉土中孔隙体积较大，为使土体达到密实，必须改变传统的压实方法，采用振动压实法或填充更细颗粒对粉土进行改良，粉土对水很敏感，施工中要严格控制填土的含水率。

关键词: 低液限粉土, 压实特性, 击实试验, 含水率

Abstract: Throughout a series of compaction tests on different soil samples, the family of dry density curves of the low liquid limit silty soils is developed in order to study the compaction mechanism of these soils. The test results show that: there is a significant amount of the air existing in the pore voids of the silty soils so that they are not really well compacted. It is also necessary to replace the traditional method of compaction with more effective vibratory compaction method or to mix the silty soils with the finer particles so that the soil properties could be improved. Silty soils are very sensitive to water content. A strict control of the moisture content during the construction is necessary.

Key words: low liquid silt, compaction property, compaction test, moisture content