Interface Behavior of Sands from Constant Normal Stiffness Direct Shear Tests
Porcino D, Fioravante V, Ghionna VN, Pedroni S
(Received 10 April 2000; accepted 23 September 2002)

Abstract
This paper reports an experimental study concerning the frictional behavior of sand-solid structure interfaces. The study was performed using a constant normal stiffness (CNS) direct shear box. Three natural silica sands and four aluminium plates with different roughnesses were investigated. A comparison between constant normal load (CNL) and CNS tests is reported. The influence of the main factors controlling the frictional behavior of the investigated materials such as constant normal stiffness, roughness of solid surface, particle size, and relative density, and initial effective normal stress are analyzed and discussed.

Keywords:
constant normal stiffness, direct shear, direct shear box, friction, interface, sands, sand-solid

Paper ID: GTJ19513_263

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Author Porcino D, Fioravante V, Ghionna VN, Pedroni S Title Interface Behavior of Sands from Constant Normal Stiffness Direct Shear Tests Symposium , Committee on