Strain Rate Effect on Static and Dynamic Behaviors of Eastern Canada Fine Grained Soils

Author:

Abdellaziz Mustapha1,Karray Mourad2,Betegard Jeudy3,Locat Pascal4,Ledoux Catherine5,Mompin Rémi6,Chekired Mohamed7

Affiliation:

1. Universite de Sherbrooke, 7321, Génie Civil, 2500, boulevard de l'Université, Sherbrooke, Quebec, Canada, J1K 2R1, ;

2. Universite de Sherbrooke, 7321, Génie Civil, 2500 boulvard université, Sherbrooke, Canada, J1K 2R1, ;

3. Université de Sherbrooke, Sherbrooke, Canada;

4. Ministère des Transports du Québec, 71633, Direction de la géotechnique et de la géologie, Ministère des Transports du Québec, Direction de la Géotechnique et de la Géologie, 2700 rue Einstein, Bloc F, Quebec, Quebec, Canada, G1P 3W8, ;

5. MTQ , Québec, Quebec, Canada;

6. MTQ , Québec, Quebec, Canada, ;

7. Institut de recherche d'Hydro-Quebec, 113259, Sciences des Matériaux, 1740 Boulé Lionel Boulet, Varennes, Quebec, Canada, J3X 1S1, , ;

Abstract

The assessment of the strain rate effect on the geotechnical properties of soils constitutes an important step toward a more accurate analysis of their response. This study presents the experimental results of monotonic and cyclic simple shear tests performed to examine the strain rate effect on the behavior of eastern Canada soils. Eight natural soils sampled from different locations in eastern Canada were used in this study. The tests were performed on a simple shear device using a strain-controlled mode. In addition to the obtained experimental results, published data in the literature were used to draw the conclusions of this study. Analysis of the data indicates that the undrained shear strength increases proportionally with the strain rate by approximately 10–17% per log cycle of . The results also show that the secant shear modulus G increases with the strain rate, especially at large strain amplitude. Moreover, the analysis of the data revealed that the magnitude of the strain rate effect seems to be correlated with the shear strain amplitude and plasticity index (Ip). A practical application of the outcomes on the backbone curves is given in which illustrates the influence of and on the strain rate effect.

Publisher

Canadian Science Publishing

Subject

Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology

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