Evaluation of small-strain shear modulus of Fontainebleau sand based on innovative pressuremeter probe testing in a calibration chamber

This paper presents an experimental study aimed at evaluating the measuring capabilities of innovative monocellular pressuremeter probe, Monocell Francis Cour based on calibration testing in laboratory. The originality tested equipment is to allow evaluation soil properties both small- and large-strain domains, without need sophisticated point displacement arms. focuses small-strain shear modulus G Fontainebleau sand, NE34, tests carried out with this specific probe. Shear values obtained probe are then compared resulting from more classical elementary tests, showing a fairly good consistency. It shown, satisfactory agreement, that it possible quantify influence density index sand as well mean effective stress around modulus, analysis unload−reload loops performed during test. programme under well-controlled laboratory conditions allows validation be proposed for method derivation small strain levels using prototype pressuremeter.