Collapsible Deformation Characteristics and Its Changes in Microstructure of Loess in West of Liaoning
详细信息
- 责任者：Wang Changming (College of Construction Engineering ; Jilin University ; Changchun 130026 ; China) ; Lin Rong
- 刊名：Journal of Jilin University
- 出版年：2011
- 卷期：41(2)
- 关键词：黄土类土 ; loessial soil ; 辽宁 ; Liaoning Province
- 页码：p.471-477
- 图表：7 illus., 1 table, 17 refs.
- 分类号：1702
- issnNo：ISSN1671-5888
- isbnNo：CN22-1343/P
摘要
The initial moisture content has important influences in collapsibility of loess. The collapsible deformation characteristics is studied in laboratory under a set of man-made samples with different moisture contents. And the microstructure of the samples are tested by using SEM technique, furthermore the microstructure of samples is analyzed by the quantitative method and fractal theory. The results are shown in the followings as: 1) the initial moisture content obviously effects the collapsible deformation of loess in west of Liaoning Province; 2) the relation between vertical stress and vertical strain for samples with different moisture contents can be all described by a hyperbola function; and 3) the microstructure of loess samples is getting dense, the average number of pore of samples obviously increases and the pore area decreases after the sample is collapsed. The collapse is a process that small pore increases, fractal dimension decreases, and complexity of the pore increases.