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A critical review of the methodologies employed for suction measurement for developing the SWCC

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Title A critical review of the methodologies employed for suction measurement for developing the SWCC
 
Creator SREEDEEP, S
SINGH, DN
 
Subject suction
soil-water characteristic curve
tensiometer
pressure membrane extractor
dew point potentiameter
 
Description Several methodologies have been developed and used by researchers for measuring either total suction ψ (sum of matric suction ψm and osmotic suction ψo), or only ψm. While employing different methodologies for establishing the soil-water characteristic curve, SWCC, there is a possibility that the factors such as the type of the soil suction measured, measurement range, equilibration time, presence of salts or contaminants in the soil etc., may influence it. Thus there is a need to understand the uniqueness of SWCC determined by using some of the commonly adopted methodologies such as insertion tensiometer, a pressure membrane extractor for measuring ψm, and a dew point potentiameter for measuring ψ. For this purpose, two locally available uncontaminated fine grained soils, of entirely different characteristics were considered in this study. In addition, to understand the influence of salt content on the SWCC, another chloride rich soil of marine origin was also considered. The study indicates that the SWCC established by using different methodologies may not be unique and hence due care should be taken while reporting the SWCC of a soil.
 
Publisher IACMAG
 
Date 2009-02-18T09:11:49Z
2011-11-28T07:34:03Z
2011-12-15T09:57:06Z
2009-02-18T09:11:49Z
2011-11-28T07:34:03Z
2011-12-15T09:57:06Z
2008
 
Type Article
 
Identifier Proceedings of the 12th IACMAG: Geomechanics in the Emerging Social & Technological Age, Goa, India, 1-6 October 2008, 1988-1993
http://hdl.handle.net/10054/699
http://dspace.library.iitb.ac.in/xmlui/handle/10054/699
 
Language en