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Parametric Study of MSW Landfill Settlement Model

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Title: Parametric Study of MSW Landfill Settlement Model
Author(s): Babu, G. L. Sivakumar; Reddy, Krishna R.; Chouksey, Sandeep K.
Subject(s): MSW landfill settlement constitutive model biodegradation creep
Abstract: A newly developed and validated constitutive model that accounts for primary compression and time-dependent mechanical creep and biodegradation is used for parametric study to investigate the effects of model parameters on the predicted settlement of municipal solid waste (MSW) with time. The model enables the prediction of stress strain response and yield surfaces for three components of settlement: primary compression, mechanical creep, and biodegradation. The MSW parameters investigated include compression index, coefficient of earth pressure at-rest, overconsolidation ratio, and biodegradation parameters of MSW. A comparison of the predicted settlements for typical MSW landfill conditions showed significant differences in timesettlement response depending on the selected model input parameters. The effect of lift thickness of MSW on predicted settlement is also investigated. Overall, the study shows that the variation in the model parameters can lead to significantly different results; therefore, the model parameter values should be carefully selected to predict landfill settlements accurately. It is shown that the proposed model captures the time settlement response which is in general agreement with the results obtained from the other two reported models having similar features.
Issue Date: 2011-06
Publisher: Elsevier
Citation Info: Babu, G. L. S., Reddy, K. R., & Chouksey, S. K. 2011. Parametric study of MSW landfill settlement model. Waste Management, 31(6): 1222-1231. DOI: 10.1016/j.wasman.2011.01.007
Type: Article
Description: NOTICE: this is the author’s version of a work that was accepted for publication in Waste Management. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Waste Management, Vol 31, Issue 6, (June 2011) DOI: 10.1016/j.wasman.2011.01.007. The original publication is available at
ISSN: 0956-053X
Sponsor: Partial funding is provided by the U.S. National Science Foundation (Grant CMMI #0600441), which is gratefully acknowledged.
Date Available in INDIGO: 2012-03-02

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