Solidification of dredged marine clay under varied mix conditions: a laboratory study

Chan, Chee-Ming and Kikuchi, Y. and Mizutani, T. (2012) Solidification of dredged marine clay under varied mix conditions: a laboratory study. In: Advances in Transportation Geotechnics, 10-14 September 2012, IS-Hokkaido .

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Abstract

Dredged marine clay, treated with binders like cement, can be reused in various geotechnical applications as sound geomaterial. By adding and mixing binders with the clay, the soft material can be transformed into stronger and stiffer stratum for load bearing. Admittedly advancement in machinery and computerized operations have significantly improved the mixing process, but individual factors contributing to the mixing condition still leave room for further refinement of the effectiveness. This paper describes a series of laboratory tests, mainly unconfined compressive strength tests complemented with X-ray CT (Computer Tomography) scans, conducted on cement-stabilised dredged clay specimens of varied uniformity. The variation in uniformity was introduced via different Water/Cement (W/C) ratios, number of cement layers in the initial state as well as the number of mixing cycles adopted. The wide spectrum of specimens tested allowed a comprehensive cross-comparison of the results, which showed that while mixing effort is crucial, the initial conditions of clay’s consistency and binder’s distribution do affect the solidification mechanism to certain extents.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA703-711 Engineering geology. Rock mechanics. Soil mechanics.
ID Code:3453
Deposited By:Normajihan Abd. Rahman
Deposited On:25 Mar 2013 15:27
Last Modified:21 Jan 2015 16:09

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