Undrained shear strength of polypropylene fiber reinforced alluvial clay

Construction of civil engineering structures on weak soil without taking necessary precautions may be risky. Alluvial that has not completed its geological formation a high void ratio and contains organic material therefore, the strength properties these soils should examined carefully. In this study, undrained shear (cu) behavior natural polypropylene (PP) fiber-reinforced alluvial clays was investigated with laboratory Vane test. To examine moisture content effects cu clay, samples were prepared in 0.50 liquid limit (LL), 0.75 LL, LL water contents. The PP fibers used 6 18 mm long, they mixed 0.1, 0.5, 1% by dry weight sample. tests performed at two different depths to investigate overburden pressure effect. increase caused significant decrease cu. results indicated reinforced (1 % PP) clay deposits 0.5LL, 0.75LL, contents 56.6, 20.7, 8.4 kPa, respectively. fiber increased deposits. length directly proportional values. effect more pronounced long added samples. %1 (6 mm) same 27.4, 29.1, 55.7 kPa. increasing penetration depth.