Experimental Study Of Polypropylene Fiber Reinforced Concrete Beams

The fourteen simply supported beams mixed with the polypropylene fiber are tested to study the effect of workability of concrete, presentation quality of structures, cracking load and stiffness of beam, and crack resistance of structures due to the polypropylene fiber. Experimental results indicated that the polypropylene fiber can improve the workability of concrete availably, and can increase the presentation quality of structures with the voids and pits decreased; the cracks of beam are controlled effectively, the width and length of crack decreased, the dispersibility of crack in beam face improved, and the ductility of beam increased; and the cracking load of reinforced concrete beam is increased, the amplify up to about 30%, simultaneity the ultimate bear capacity increased.SOLID65 element in ANSYS software was used to analyze and simulate these beams, a comparative agreement between theory and experiment on elastic stage was found. But more researches need further to make on plastic stage.