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
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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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