Micro-structure characteristics of undisturbed expansive soil under the wetting-drying effect

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 会议论文

	Micro-structure characteristics of undisturbed expansive soil under the wetting-drying effect
	Wang, Y.1,2; Kong, L. W.1; Wang, Y. L.2
	2015
会议日期	SEP 01-03, 2014
会议地点	Univ Cambridge, Cambridge, ENGLAND
页码	1409-1414
英文摘要	The drying-wetting process of expansive soil caused by atmospheric action is the most important factor that contributes to the degradation of the soil's engineering properties. Studies on the evolution law of the microstructure of undisturbed expansive soil are conducted under the wetting-drying process. The drying-wetting effect of expansive soil caused by atmospheric action is simulated in a constant temperature and humidity box, and then some tests of mercury intrusion porosimetry and scanning electron microscopy are carried out. Results show that the influence of wetting and drying on the characteristics of the expansive soil microstructure is significant; the manner by which the microstructures adjust and change differs significantly during the drying or wetting process. Structures with the large pore diameter generate a significant effect. The drying process causes damage more easily to the primary macro pore structure or micro fractures of expansive soil compared with the wetting process; however, the wetting process amplifies the damage and results in uniform pore size distribution.
会议录	Geomechanics from Micro to Macro, Vols I and II
会议录出版者	CRC PRESS-TAYLOR & FRANCIS GROUP
会议录出版地	BOCA RATON
语种	英语
WOS研究方向	Engineering ; Geology
WOS记录号	WOS:000380529100229
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4855]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Minist Water Resources, Yangtze River Sci Res Inst, Key Lab Geotech Mech & Engn
推荐引用方式 GB/T 7714	Wang, Y.,Kong, L. W.,Wang, Y. L.. Micro-structure characteristics of undisturbed expansive soil under the wetting-drying effect[C]. 见:. Univ Cambridge, Cambridge, ENGLAND. SEP 01-03, 2014.