MECHANICAL BEHAVIOR OF GRAVEL REINFROCED WITH DISCRETE SHORT FIBER

Abstract

In this paper, reinforcing effect on mixing of a small amount of polymeric fiber in a gravelly soil was investigated by performing a series of laboratory tests including triaxial compression tests. Discrete and flexible linear vinylon fibers that have 0.5 mm in diameter and 30 mm in length were selected in the present study. Strength and deformation property of the fiber-reinforced gravelly soil was compared with the ones of unreinforced gravely soil. The results of triaxial compression tests show that the addition of short fiber in gravelly soil leads increase in peak stress with a slight decrease in volume dilatation behavior. The value of internal friction angle of the gravelly soil can be increase effectively by mixing discrete and flexible short fiber.