LOADING RATE EVALUTION ON THE MECHANICAL BEHAVIOR OF SATURATED MSW MATERIALS

Ano:
2009
Autores:
Ali Noorzad; Nader Shariatmadari; Mehran Karimpour-Fard; Sandro Lemos Machado;
Palavras chave:
Resumo:

SUMMARY: Landfill catastrophic failure in last decade indicates that the knowledge level of these materials behaviour in the geotechnical point of view is not properly adequiet however many attempts and researches in this way have been made. 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 triaxia test in undrained condition, the effect of loading rate on the level of shear strength and pore water pressure generation pattern under different loading rate were evaluated. The loading rates were changed from a base value achived according to head (1980) relationship to higher values representing ground motions. The results confirmed the achievement of Augello et al (1995, 1998), Zekkos (2005) and Zekkos et al. (2007) concerning higher level of shear resistance of MSW materials under dynamic loading condition.

 

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