Angle of Friction in Reinforced Earth

Abstract

Abstract The present work took care of the frictional resistance developed between the fill material and mats used as soil reinforcement which are made of locally natural materials . These natural materials are locally available plant organs , which are cheap and abundant , and is expected to result in lower construction cost . The angle of friction is 0.77Øbetween these plant mats and the sand , where is the angle of internal friction of sand . The asphalt bitumen used as a protection coat against moisture and destructive organs , was found to result also in increasing the angle of friction between these mats and the sand to 0.88Ø.