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LIQUEFACTION POTENTIAL OF SABARMATI RIVER SAND

S.V. Dinesh, Mahesh Kumar G, Muttana S. Balreddy and B.C. Swamy

Paper No.: 516

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Vol.: 48

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No.: 2-4

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December, 2011

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pp. 59-69

Abstract

 

Liquefaction of saturated sandy soils has been studied by several researchers and liquefaction potential depends on initial confining pressure, relative density, amplitude of cyclic stress etc. The Bhuj earthquake caused extensive damage in several parts of Gujarat. In the present paper, the results of stress controlled cyclic triaxial tests on soil samples obtained from the Sabarmati river bed in Ahmedabad city, Gujarat are reported for various relative densities at 100 kPa confining pressure. The results of cyclic strength, excess pore water pressure development and dynamic properties are analyzed. The liquefaction resistance is qualitatively compared to that of Toyoura sand. The liquefaction strength increases with relative density and correlates well with normalized shear strength obtained from CU tests.
Keywords: Liquefaction, Pore Pressure Ratio, Cyclic Resistance Ratio, Shear Modulus

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