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CORRELATION BETWEEN ELASTIC MODULUS AND SHEAR WAVE VELOCITY AT LARGE STRAIN LEVEL
Session: Soil Mechanics II / Mécanique des sols II
Mourad Karray, Université de Sherbrooke (Canada)
Mohamed Ben Romdhan, Université de Sherbrooke (Canada)
Mahmoud N. Hussien, Université de Sherbrooke (Canada)
Geotechnical studies on large projects need constitutive relations for modeling deformation behavior of soils and construction materials. Modeling is particularly important for zoned dams to examine the compatibility of deformations between pervious and impervious zones, generally made of different materials. The determination of the deformation behavior of granular materials, especially coarse granular soils, requires special equipment’s and remains a complex issue. The small strain shear modulus (Gmax) is an attractive parameter as it can be measured in the field under the true in-situ conditions using non-destructive tests (e.g., MMASW). However, the exploitation of these measures requires the establishment of correlations between this modulus (Gmax) and other soil parameters at large deformations (e.g., E, Eoed, ?). This can be achieved by measuring simultaneously the oedometric module and the shear wave velocity (Vs) in the laboratory on materials having a similar gradation to that used for the geotechnical structure construction. This paper presents the results of experimental work carried out at the soil mechanics laboratory of the University of Sherbrooke on different sands.
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