Dynamic Properties of Clean Sand and Expansive Clay from Resonant Column Studies

Dutta, T T and Saride, Sireesh (2015) Dynamic Properties of Clean Sand and Expansive Clay from Resonant Column Studies. Masters thesis, Indian Institute of Technology Hyderabad.

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Abstract

Design of structures subjected to different dynamic loads requires the dynamic properties of soil. The dynamic load may come from earthquakes, pile driving operations, vibrations from machines, ocean waves, blasting operations etc. In the present study, a fixed free type of resonant column had been used to determine the dynamic properties of clean sand and moderately expansive soil. The dynamic properties which are mostly discussed in the available literatures are shear modulus and damping ratio of soil. Another important dynamic property which is not given due consideration is the Poisson’s ratio of soil. Proper estimation of the Poisson’s ratio is required as it signifies the stress and deformation characteristics of the soil. By performing resonant column tests in both torsional mode and flexural mode of excitation, it is possible to determine the Poisson’s ratio of soil.

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