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
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Subject |
Hysteresis, Shrink-swell, Volume change, Exchangeable cations, Carbon
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Description |
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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 |
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Date |
2020-08-25T07:36:53Z
2020-08-25T07:36:53Z 1001-01-01 |
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Type |
Research Paper
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Identifier |
Not Available
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/40213 |
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Language |
English
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Relation |
Not Available;
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Publisher |
The Clay Minerals Society of India
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