Liquefaction of clean sand using triaxial test

S.R. Pathak, R.S. Dalvi

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Laboratory Testing

ABSTRACT: This paper deals with investigation of initiation of liquefaction of soil using monotonic triaxial tests. Consolidated undrained static triaxial tests were conducted on clean sand for four initial relative densities: 30%, 40%, 60% and 70% with confining pressures of 50,100 and 200 kPa. Two different methods of sample preparation, viz. wet tamping method and IS-Code method were employed to test a total of twenty four samples. It was observed that deviator stress increases with increase in % strain; with maximum pore pressure reached between 1.0% and 1.5% of axial strain. Unstable zone is identifiable as the region that lies between effective stress failure line and the peak pore pressure line. The samples prepared by IS code method consistently exhibit dilative behaviour for all relative densities.

RÉSUMÉ: Este papel trata con investigación de iniciación de licuación de tierra que utiliza pruebas de triaxial de monotonic. Las pruebas undrained constantes consolidadas de triaxial fueron realizadas en la arena limpia para cuatro densidades 30%,40%,60% relativas iniciales y 70% con limitar las presiones de 50.100 y 200kPa. Totales 24 muestras fueron probadas utilizando dos métodos de preparación de muestra. Fue observado que énfasis de deviator aumenta como % aumentos de esfuerzo. La presión máxima del poro fue alcanzada en 1 a 1,5% del esfuerzo axial. La zona inestable ha sido considerada para ser el uno que está entre la línea efectiva de fracaso de énfasis y línea de presión de poro de pico. Las muestras preparadas por ES el método de código mostró dilative comportamiento para todas las densidades.

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Cite this article:
S.R. Pathak; R.S. Dalvi (2011) Liquefaction of clean sand using triaxial test in GEO2011. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO11Paper452,author = S.R. Pathak; R.S. Dalvi ,title = Liquefaction of clean sand using triaxial test,year = 2011}