Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

Recent catastrophic failure in different regions of the world is an indication on the poor level of engineering knowledge on the mechanical behavior of MSW materials which are the main materials in the landfill body. However extensive researches have been made to represent a clear frame work to describe the behavior of these materials but clearly all of these attempts had not been enough. In the region with high seismic activity, mechanical response of MSW materials under quick and dynamic loading condition is one of the issues which should be addressed however there are some evidences concerning the higher resistance of MSW materials under dynamic loading condition. As a part of an extensive research, using large triaxial apparatus and large direct shear box, the effect of shearing rate on the mechanical response of these materials were evaluated. Effect of this factor also estimated on the pore water pressure generation pattern using large triaxial tests performed in un-drained condition. The results confirmed the achievement of Augello et al. (1995, 1998), Zekkos (2005) and Zekkos et al. (2007) regarding higher level of shear resistance of MSW materials under dynamic loading condition. The results also showed that however the rate of pore water pressure generation decreases with increasing the loading rate but final level of pore water pressure is independent of loading rate.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 24th, 12:00 AM May 29th, 12:00 AM

Shearing Rate Effect on Mechanical Behavior of MSW Materials

San Diego, California

Recent catastrophic failure in different regions of the world is an indication on the poor level of engineering knowledge on the mechanical behavior of MSW materials which are the main materials in the landfill body. However extensive researches have been made to represent a clear frame work to describe the behavior of these materials but clearly all of these attempts had not been enough. In the region with high seismic activity, mechanical response of MSW materials under quick and dynamic loading condition is one of the issues which should be addressed however there are some evidences concerning the higher resistance of MSW materials under dynamic loading condition. As a part of an extensive research, using large triaxial apparatus and large direct shear box, the effect of shearing rate on the mechanical response of these materials were evaluated. Effect of this factor also estimated on the pore water pressure generation pattern using large triaxial tests performed in un-drained condition. The results confirmed the achievement of Augello et al. (1995, 1998), Zekkos (2005) and Zekkos et al. (2007) regarding higher level of shear resistance of MSW materials under dynamic loading condition. The results also showed that however the rate of pore water pressure generation decreases with increasing the loading rate but final level of pore water pressure is independent of loading rate.