Internal Friction Angle of Sands with High Fines Content

There are three main objectives of this study. The first is to evaluate the effect of fines content on the value of internal friction angle of sand soils mixed with fines typically encountered in Louisiana. The second objective is to evaluate the effect of fines content on the interface friction angle between sand soils mixed with fines and both concrete and steel surfaces. Lastly, the study will determine the threshold percent of fines content beyond which the sand soils mixed with fines will behave as cohesive soils, rather than cohesion less soils, and the effect on design of driven piles.