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Dear All, There is increasing knowledge of impurities present in soils near the surface whether natural or man-made such as soil contamination, biological presence, gas etc on land and seabed. How much of this affects strength and other properties? Regards, Parminder Singh Malaysia On Wed, Jan 4, 2012 at 7:57 PM, Malcolm Bolton <[log in to unmask]> wrote: > Dear Cyrus, > > An even more pertinent PhD thesis is that of Da-Mang Lee at Cambridge: > > Lee D-M 1992 The angles of friction of granular fills > > Lee conducted many triaxial tests on different gradings of sand and gravel. > But these were old-style tests without much in the way of frictionless ends > or local strain measurement. Nevertheless, the strength data were > interesting, and compared with pilot scale tests on granular fill carried > out at TRRL. > > Contact me directly if you find difficulty borrowing a copy. > > Regards, > > Malcolm Bolton > > > Professor Malcolm Bolton > Acting Head of Civil, Structural and Environmental Engineering > Schofield Centre, High Cross, Cambridge CB3 0EL > Phone (01223 7) 68042 > > > > > -----Original Message----- > From: Geotechnical Engineering Email List > [mailto:[log in to unmask]] On Behalf Of Dr. John D. > Mckinley > Sent: 04 January 2012 11:41 > To: [log in to unmask] > Subject: Re: Test Data of Triaxial Tests! > > Dear Cyrus Jedari, > > Although it is going back a bit, you might want to get hold of Stroud's > 1971 > PhD thesis from the University of Cambridge - "Sand at low stress levels in > the simple shear apparatus". I don't know whether Stroud's data has been > archived, but I suggest you contact either Malcolm Bolton at Cambridge and > David Muir Wood at Dundee. > > Regards, > > John > > ---------------------------------------------------------------------------- > ------- > Dr. John D. McKinley Lecturer in Environmental Engineering > School of Planning, Architecture and Civil Engineering > Queen's University Belfast > > ---------------------------------------------------------------------------- > ------- > > On 27 Dec 2011, at 11:44, Cyrus Jedari wrote: > > > Dear Colleagues > > I am investigating about shear behavior of gravelly sands and I have > > developed a critical state model to evaluate effect of gravel content > > on shear strength and dilatancy of gravelly sands. To validate my > > model, I need some data of triaxial tests that have been done on sand- > > gravel mixtures. I should use 3 sets of data to validate my model. I > > have two sets of data s and I am in urgent need of one more set of > > datas. > > I will appreciate anyone who can send me any useful Data. > > Best Regards > > Cyrus Jedari >