Effects of sample dimensions and shapes on measuring soil–water characteristic curves using pressure plate

	Effects of sample dimensions and shapes on measuring soil–water characteristic curves using pressure plate
	Wang, Min 1; Kong, Lingwei 2; Zang, Meng 2
刊名	Journal of Rock Mechanics and Geotechnical Engineering
	2015
卷号	7 期号:4 页码:463
关键词	Soil–water characteristic curve (SWCC) Pressure plate Mercury intrusion Microstructure Expansive soil Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712
ISSN号	1674-7755
英文摘要	It is well known that soil–water characteristic curve (SWCC) plays an important role in unsaturated soil mechanics, but the measurement of SWCC is inconvenient. In laboratory it requires days of testing time. For fine-grained clays, it may last for a couple of months using pressure plate tests. In this study, the effects of sample dimensions and shapes on the balance time of measuring SWCCs using pressure plate tests and the shape of SWCCs are investigated. It can be found that the sample dimensions and shapes have apparent influence on the balance time. The testing durations for circular samples with smaller diameters and annular samples with larger contact area are significantly shortened. However, there is little effect of sample dimensions and shapes on the shape of SWCCs. Its mechanism is explored and discussed in details through analysing the principle of pressure plate tests and microstructure of the sample. Based on the above findings, it is found that the circular samples with smaller dimensions can accelerate the testing duration of SWCC using the pressure plate.
资助项目	[National Natural Science Foundation of China] ; [State Key Laboratory of Geomechanics and Geotechnical Engineering]
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/26626]
专题	中科院武汉岩土力学所
作者单位	1.斯旺西大学 2.中国科学院
推荐引用方式 GB/T 7714	Wang, Min,Kong, Lingwei,Zang, Meng. Effects of sample dimensions and shapes on measuring soil–water characteristic curves using pressure plate[J]. Journal of Rock Mechanics and Geotechnical Engineering,2015,7(4):463.
APA	Wang, Min,Kong, Lingwei,&Zang, Meng.(2015).Effects of sample dimensions and shapes on measuring soil–water characteristic curves using pressure plate.Journal of Rock Mechanics and Geotechnical Engineering,7(4),463.
MLA	Wang, Min,et al."Effects of sample dimensions and shapes on measuring soil–water characteristic curves using pressure plate".Journal of Rock Mechanics and Geotechnical Engineering 7.4(2015):463.