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Microstructure change of loess soil during wet collapsing
Shao, XX; Zhang, HY; Liu, JW; Shao, XX (reprint author), Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Peoples R China.
2016
会议日期OCT 23-26, 2015
会议地点Guilin, PEOPLES R CHINA
页码143-146
英文摘要Loess soil is a problematic soil which exhibits collapse property when saturated with water. This paper tends to provide direct evidence quantitatively describing the microstructure change in loess soil during different stages of collapse. Malan loess soil (Q3) was sampled and compacted to various densities to poses different collapsibilities. Elevated volumes of water were added to the specimens with the same density to establish the correlation between wetting deformation and saturation degree. All specimens were tested by Scanning Electron Microscope (SEM) and Mercury Intrusion Porosimetry (MIP) to investigate the microsturcture change during different collapsing stages. Test results indicate that under certain pressure the void ratio of loess soils specimens, even though with different initial densities, decreases exponentially with the increase of saturation degree, and finally become to be almost the same. The specimens with lower density are characterized by a microstructure that most of pores size is greater than that of the particles size, and the adjustment of these big pores during wetting is responsible for the strong collapsibility
会议录UNSATURATED SOIL MECHANICS-FROM THEORY TO PRACTICE
会议录出版地BOCA RATON
学科主题Engineering
语种英语
WOS记录号WOS:000385791100015
内容类型会议论文
源URL[http://ir.lzu.edu.cn/handle/262010/189634]  
专题土木工程与力学学院_会议论文
通讯作者Shao, XX (reprint author), Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Peoples R China.
推荐引用方式
GB/T 7714
Shao, XX,Zhang, HY,Liu, JW,et al. Microstructure change of loess soil during wet collapsing[C]. 见:. Guilin, PEOPLES R CHINA. OCT 23-26, 2015.
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