Published Online: 10 September 2013
Page Count: 12
Tastan, Erdem O.
Project Director, Paul C. Rizzo Associates, Pittsburgh, PA
Carraro, J. Antonio H.
Professor, Centre for Offshore Foundation Systems, The Univ. of Western Australia, Crawley, WA
(Received 2 April 2013; accepted 12 July 2013)
Given that hollow cylinder testing of undisturbed sand samples is virtually impossible to carry out, a new slurry deposition method is described in this study that allows reconstitution of uniform, saturated hollow cylinder specimens of clean and silty sands deposited under water. A novel gradient density mold was designed to demonstrate the uniformity of hollow cylindrical specimens prepared with the proposed method. Based on the results of 40 hollow cylinder tests and six uniformity tests on clean and silty sand specimens, the proposed method is shown to yield uniform hollow cylinder specimens in terms of relative density and silt content that have a high initial degree of saturation and that can be easily saturated using conventional back-pressure saturation procedures. Specimens prepared with the proposed method present very repeatable stress–strain responses during anisotropic consolidation and drained principal stress rotation.
Paper ID: GTJ20130056