TENSILE PROPERTIES OF POLYPROPYLENE REINFORCED CEMENT WITH DIFFERENT FIBER ORIENTATION

This paper describes an investigation of the effects of fiber angle on the cracking stress and ultimate strength of a fiber reinforced thin sheet material made with networks of fibrillated polypropylene film. The cracking stress and the ultimate strength of the composite are reduced as the fiber angle increases and the stress-strain curves, and crack patterns can be divided into three categories related to the fiber arrangements and orientations of the fibers to the stress direction.