A simple hypoplastic model for simulating the mechanical behaviour of MBT waste

I. Petrović*, E. Bauer

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper deals with the experimental investigation and numerical simulation of the mechanical behaviour of samples from a "Mechanical Biological Treatment" waste deposit (MBT waste deposit). Laboratory tests with samples of different moisture contents were conducted to determine the basic geotechnical characteristics as well as the stressstrain relations under loading and reloading in a large oedometer with a sample diameter of 50 cm. With respect to a moisture dependent solid hardness, the mechanical behaviour can be well predicted using a hypoplastic constitutive model. As only limited experimental results were available, a simplified hypoplastic model was used. For the calibration of this model it was sufficient to conduct oedometer tests and to use a simple procedure to estimate the angle of friction. The model proved to be satisfactory for modelling the compaction behaviour of MBT waste observed in experiments.

Original languageEnglish
Title of host publicationComputational Geomechanics, COMGEO II - Proceedings of the 2nd International Symposium on Computational Geomechanics
Pages337-346
Number of pages10
Publication statusPublished - 2011
Event2nd International Symposium on Computational Geomechanics, COMGEO II - Cavtat-Dubrovnik, Croatia
Duration: 27 Apr 201129 Apr 2011

Conference

Conference2nd International Symposium on Computational Geomechanics, COMGEO II
CountryCroatia
CityCavtat-Dubrovnik
Period27/04/1129/04/11

Keywords

  • Hypoplasticity
  • MBT waste
  • Oedometric compaction

ASJC Scopus subject areas

  • Geophysics
  • Geotechnical Engineering and Engineering Geology
  • Computational Mathematics

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  • Cite this

    Petrović, I., & Bauer, E. (2011). A simple hypoplastic model for simulating the mechanical behaviour of MBT waste. In Computational Geomechanics, COMGEO II - Proceedings of the 2nd International Symposium on Computational Geomechanics (pp. 337-346)