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Constitutive model for municipal solid waste incorporating mechanical creep and biodegradation-induced compression

Babu, GL Sivakumar and Reddy, Krishna R and Chouksey, Sandeep K (2010) Constitutive model for municipal solid waste incorporating mechanical creep and biodegradation-induced compression. In: Waste Management, 30 (1). pp. 11-22.

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Abstract

A constitutive model is proposed to describe the stress-strain behavior of municipal solid waste (MSW) under loading using the critical state soil mechanics framework. The modified cam clay model is extended to incorporate the effects of mechanical creep and time dependent biodegradation to calculate total compression under loading. Model parameters are evaluated based on one-dimensional compression and triaxial consolidated undrained test series conducted on three types of MSW: (a) fresh MSW obtained from working phase of a landfill, (b) landfilled waste retrieved from a landfill after 1.5 years of degradation, and (c) synthetic MSW with controlled composition. The model captures the stress-strain and pore water pressure response of these three types of MSW adequately. The model is useful for assessing the deformation and stability of landfills and any post-closure development structures located on landfills.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Elsevier science.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 19 Jan 2010 09:05
Last Modified: 19 Sep 2010 05:54
URI: http://eprints.iisc.ernet.in/id/eprint/25412

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