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Re-search Shrink-Swell Measurement and Relationship with Soil Properties of Black Clayey Tropical Vertisols

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Title Re-search Shrink-Swell Measurement and Relationship with Soil Properties of Black Clayey Tropical Vertisols
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Creator PRAVIN B. THAKURˆ, TAPAS BHATTACHARYYA, S. K. RAY, P. CHANDRAND, D. K. PAL AND B. A. TELPANDE
 
Subject Hysteresis, Shrink-swell, Volume change, Exchangeable cations, Carbon
 
Description Not Available
Shrink–swell phenomenon is a complex process in vertic group of soils. Their dynamics in soils has
long been presented through various models, field and laboratory methods. The present study finds out a
feasible way to measure the shrink-swell potential and the key responsible factors in soil which are most
influentialin determiningthis phenomenon.Four shrink– swell parameters such as coefficient of linear
extensibility(COLE), coefficient of linear shrinkage (COLS), percent volume change on swelling(PVCsw),
percent volume change onshrinkage (PVCs) measured at 25oC (room temperature,RT), 40oC and 110oC
wereused to quantifyshrink – swell phenomenon. Results indicated that heating the soil cake at 110oC over
40oC does not bring higher change (0-10 %) in linear shrinkage, the corresponding value for volume change
at 110oC showed greater change (3-61%) hence, COLS at 40oC and PVCs at 110oC amongst others were
promising and may be recommended for routine measurement of shrink–swell phenomenonin the laboratory.
Out of three the different measurement devices, cube shaped box appeared to be the better option. The soil
properties which representcarbon content and soil substrate have significant correlations(p
Not Available
 
Date 2020-08-25T07:36:53Z
2020-08-25T07:36:53Z
1001-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/40213
 
Language English
 
Relation Not Available;
 
Publisher The Clay Minerals Society of India