阿太堡极限
土壤水分
材料科学
表征(材料科学)
岩土工程
腐蚀
收缩率
土工试验
土壤科学
环境科学
复合材料
地质学
纳米技术
古生物学
作者
T. S. Umesh,S. V. Dinesh,P. V. Sivapullaiah
出处
期刊:Materials Sciences and Applications
[Scientific Research Publishing, Inc.]
日期:2011-01-01
卷期号:02 (06): 629-633
被引量:65
标识
DOI:10.4236/msa.2011.26085
摘要
Dispersive soils which occur in many parts of the world are easily erodible and segregate in water pose serious problems of stability of earth and earth retaining structures. The mechanism of dispersivity of soils is reasonably well understood. However there is simple method to identify the dispersivity of the soils and even more difficult to quantify the dispersivity. Visual classification, Atterberg's limits and particle size analysis do not provide sufficient basis to differentiate between dispersive clays and ordinary erosion resistant clays. Pinhole test and double hydrometer test are the only two tests that are in vogue to identify the dispersive soils. This paper explores the possibility of using other standard tests such as shrinkage limit and unconfined compressive strength tests to quantify the dispersivity of the soils. The rationale of using the methods and correlation between the dispersivity determined by various methods has been explained. It has been concluded that dispersivity ascertained from strength tests is more reliable.
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