Correlations between Low and High Strain Stiffnesses of few Natural and Artificial Cohesive Soils
Saeed Ahmad, M. Hesham El Naggar, Aly Ahmed, Deyab Gamal El-Dean
In the proceedings of: GeoSt. John's 2019: 72nd Canadian Geotechnical ConferenceSession: Posters
ABSTRACT: Piezoelectric ring actuator-oedometer setup (PRA) w as used to measure the shear w ave velocity (Vs) and hence the dynamic shear modulus (Gmax) of few natural/artificial cohesive soils at various applied pressures. The oedometric stiffness (from 1D consolidation data) w ere determined simultaneously w ith Vs measurements. The soils w ere subjected to isotropically consolidated undrained (CIU) triaxial tests to evaluate their undrained static stiffness at different confining pressures. Low stain stiffnesses obtained from PRA setup w ere correlated to the high strain stiffnesses obtained from oedometer and CIU tests. Some practical correlations (stiffness ratios) betw een low and high strain stiffnesses for the tested soils w ere proposed w hich can be used to estimate dynamic stiffness for similar soils.
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Ahmad, Saeed, Naggar, M. Hesham El, Ahmed, Aly, El-Dean, Deyab Gamal (2019) Correlations between Low and High Strain Stiffnesses of few Natural and Artificial Cohesive Soils in GEO2019. Ottawa, Ontario: Canadian Geotechnical Society.
@article{Ahmad_GEO2019_209,
author = Saeed Ahmad, M. Hesham El Naggar, Aly Ahmed, Deyab Gamal El-Dean,
title = Correlations between Low and High Strain Stiffnesses of few Natural and Artificial Cohesive Soils,
year = 2019
}
title = Correlations between Low and High Strain Stiffnesses of few Natural and Artificial Cohesive Soils,
year = 2019
}