Constitutive Model for Strength Characteristics of Municipal Solid Waste

Chouksey, Sandeep Kumar and Babu, Sivakumar GL (2015) Constitutive Model for Strength Characteristics of Municipal Solid Waste. In: INTERNATIONAL JOURNAL OF GEOMECHANICS, 15 (2).

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Abstract

This paper presents modification of the derivation of a previously proposed constitutive model for the prediction of stress-strain behavior of municipal solid waste (MSW) incorporating different mechanisms, such as immediate compression under loading, mechanical creep, and time-dependent biodegradation effect. The model is based on critical state soil mechanics incorporating increments in volumetric strains because of elastic, plastic, creep, and biodegradation effects. The improvement introduced in this paper is the modified critical state surface and considers five variable parameters for the estimation of stress-strain behavior of MSW under different loading conditions. In addition, an expression for the strain hardening rule is derived, with considerations of time-dependent mechanical creep and biodegradation effects. The model is validated using results from experimental studies and data from published literature. The results are also compared with the predictions of the stress-strain response obtained from a well-established hyperbolic model. (c) 2014 American Society of Civil Engineers.

Item Type:	Journal Article
Publication:	INTERNATIONAL JOURNAL OF GEOMECHANICS
Publisher:	ASCE-AMER SOC CIVIL ENGINEERS
Additional Information:	Copy right for this article belongs to the ASCE-AMER SOC CIVIL ENGINEERS, 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
Keywords:	MSW; Constitutive model; Biodegradation creep; Hardening law
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	23 Apr 2015 07:42
Last Modified:	23 Apr 2015 07:42
URI:	http://eprints.iisc.ac.in/id/eprint/51359

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