Parameters Affecting High-Performance Response in Fiber-Reinforced Concrete

Abstract

High performance fiber reinforced concrete (HPFRC) composites are defined as the materials which exhibit a postpeak strain hardening type of response with a multiple crack pattern. Such a ductile behavior makes the HPFRC an ideal material to be used in structural repair and retrofit for dimensional stability, tensile-load carrying capacity, impact resistance, flexibility and long term impermeability. A high performance response of fiber reinforced cement material can be achieved through both continuous fiber reinforcement and discontinuous fiber reinforcement. A variety of parameters can affect significantly the response from strain softening to strain hardening, or from single localized crack to sequential multiple cracking. This paper will discuss the effects of those parameters on the high performance response in FRC.