?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F19155%2F&rft.title=The+Shear+Strength+of+Granular+Materials+with+Dispersed+and+Non-Dispersed+Oversized+Particles&rft.creator=Seminsky%2C+Leanna&rft.description=+++++Soils+containing+dispersed+and+non-dispersed+large+particles+(greater+than+%23+4+sieve)+form+part+of+many+engineered+fills%2C+glacial+tills%2C+debris+flows%2C+and+residual+soil+deposits.+Very+little+is+known+about+the+effect+that+the+large+particles+have+on+the+shear+strength+of+the+soil-large+particles+mixtures.+In+this+study%2C+the+influence+of+the+large+particles+on+the+shear+strength+of+the+mixtures+was+evaluated+experimentally+and+numerically.+The+experimental+analysis+used+direct+shear+tests+on+simulated+granular+materials+containing+large+dispersed+particles+as+well+as+on+real+sand-gravel+mixtures.+The+numerical+analysis+used+the+Discrete+Element+Method+(DEM).++For+the+dispersed+case+(the+large+particles+are+not+in+contact)%2C+the+laboratory+and+the+DEM+simulation+results+indicated+that+the+shear+strength+of+the+mixtures+increased+with+the+concentration+(C)+of+the+large+particles+in+the+mixtures.+The+shear+strength+of+the+mixtures+with+dispersed+oversize+particles+can+be+obtained+from+the+following+relationship%3A+Sc+%3D+Sm+(1+%2B+%CE%B1C).++In+this+relationship%2C+Sc+is+the+shear+strength+of+the+mixture%2C+Sm+is+the+shear+strength+of+the+granular+matrix+without+the+oversize+particles%2C+C+is+the+concentration+by+volume+of+the+oversize+particles%2C+and+%CE%B1+is+a+constant+that+varies+between+0.4+and+2.5.+For+the+case+of+the+non-dispersed+oversize+particles+(the+oversize+particles+are+in+contact+in+the+mixture)%2C+direct+shear+tests+on+sand-gravel+mixtures+indicated+the+shear+strength+of+the+mixtures+can+be+obtained+from+the+following+relationship%3A+Sc+%3D+Sm+(1+%2B+0.7C+%2B1.8+C2).++In+general%2C+it+was+determined+that+the+addition+of+oversize+particles+increases+the+shear+strength+of+the+soil+in+which+the+oversize+particles+are+either+dispersed+or+non-dispersed.&rft.date=2013-09-24&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F19155%2F1%2Flseminsky_etd2013.pdf&rft.identifier=++Seminsky%2C+Leanna++(2013)+The+Shear+Strength+of+Granular+Materials+with+Dispersed+and+Non-Dispersed+Oversized+Particles.++Master's+Thesis%2C+University+of+Pittsburgh.++++(Unpublished)++