A constitutive framework to model the undrained loading of municipal solid waste

This paper proposes a model to represent the MSW undrained mechanical behavior, which is an extension of the previous models developed by the authors. A more comprehensive formulation for effective stress is adopted taking into account the compressibility of waste particles and the concepts embraced...

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Bibliographic Details
Published in:Computers and geotechnics 2017-05, Vol.85, p.207-219
Main Authors: Machado, Sandro Lemos, Vilar, Orencio Monje, Carvalho, Miriam de Fátima, Karimpour-Fard, Mehran
Format: Article
Language:English
Subjects:
Compressibility
Computer simulation
Confining
Constitutive model
Effective stress
Mechanical properties
Municipal solid waste
Municipal waste management
Pore water
Pore water pressure
Pore water pressures
Pressure
Shear strength
Solid waste management
Stress
Stress-strain
Stress-strain curves
Stresses
Undrained loading
Water
Water pressure
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Summary:This paper proposes a model to represent the MSW undrained mechanical behavior, which is an extension of the previous models developed by the authors. A more comprehensive formulation for effective stress is adopted taking into account the compressibility of waste particles and the concepts embraced in the Skempton’s equation for effective stress. The model reproduces the main MSW features such as high pore water pressure generation, concave upward curves and high shear strength values, even for u=σ3 (zero net confining stress). Model predictions showed good adherence to experimental results. MSW samples of different sources were used in the simulations.
ISSN:0266-352X
1873-7633
DOI:10.1016/j.compgeo.2016.12.002