Validation of a swelling potential index for expansive soils

被引：0

作者：

Zheng, J. L. ^{[1
]}

Zhang, R. ^{[1
]}

Yang, H. P. ^{[1
]}

机构：

[1] Changsha Univ Sci & Technol, Sch Highway Engn, Changsha, Hunan, Peoples R China

来源：

UNSATURATED SOILS: ADVANCES IN GEO-ENGINEERING | 2008年

关键词：

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

A new swelling potential index for expansive soils, the Standard Absorption Moisture Content (SAMC), was recommended in Chinese Specifications for Design of Highway Subgrades JTG D30-2004. In order to validate the index, sixteen soils were obtained from six typical areas where expansive soils exist in China. Extensive tests on soil properties indicative of swelling potential, such as Atterberg limits, free swelling ratio, clay content, SAMC, cation exchange capacity, specific surface area and montmorillonite content, were conducted. Correlations between the various indices were obtained and analyzed. The study shows that SAMC is more strongly correlated with the mineralogical and chemical properties, which determine swelling potential in nature, than other physical indices. Therefore, the new swelling potential index was validated to be reliable to identify and classify swelling potential of expansive

引用

页码：397 / 402

页数：6

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