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Geotechnical and Geological Engineering
Published in: Geotechnical and Geological Engineering 2/2018

13-09-2017 | Technical Note

Secondary Compression Index Equation for Soft Clays

Authors: Matchala Suneel, G. R. Konni, Im Jong Chul, Nguyen Tien Dung

Published in: Geotechnical and Geological Engineering | Issue 2/2018

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Abstract

The magnitude of secondary compression is expressed by the secondary compression index, Cα = Δe/Δlog t, in which e = void ratio and t = time. Analysis of test data pertaining to soils of widely varying plasticity characteristics and geological origin indicates that there is an excellent correlation between the initial porosity, no and secondary compression index. In this paper, a simple equation has been suggested between Cα/no and Cα to obtain the secondary compression index of a soil, thereby it helps to eliminate the “time consuming laboratory tests” to find the Cα.
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Literature
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Graham J, Crooks JHA, Bell AL (1983) Time effects on the stress–strain behaviour of natural soft clays. Geotechnique 33(3):327–340CrossRef
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Mesri G, Stark TD, Ajlouni MA, Chen CS (1997) Secondary compression of peat with or without surcharging. J Geotech Eng Div ASCE 123(5):411–421CrossRef
Park JH, Koumoto T (2004) New compression index equation. J Geotech Geoenviron Eng 130(2):223–226CrossRef
Suneel M, Park LK, Im JC (2008) Compressibility of characteristics of korean marine clay. J Mar Georesour Geotechnol 26:111–127CrossRef
Tan JL, Leong EC, Rahardjo H (2001) Compressibility characteristics of peaty soils. In: Proceedings of the third international conference on soft soil engineering, 6–8 Dec 2001. Hong Kong, pp 689–694
Metadata
Title
Secondary Compression Index Equation for Soft Clays
Authors
Matchala Suneel
G. R. Konni
Im Jong Chul
Nguyen Tien Dung
Publication date
13-09-2017
Publisher
Springer International Publishing
Published in
Geotechnical and Geological Engineering / Issue 2/2018
Print ISSN: 0960-3182
Electronic ISSN: 1573-1529
DOI
https://doi.org/10.1007/s10706-017-0358-x

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