High-Performance Fiber-Reinforced Concrete: Development and Evaluation as a Repairing Material

This paper describes the development of high-performance fiber-reinforced concrete (HPFRC) with very high strength and the feasibility of using this concrete as a repairing material. Initially two HPFRC mixtures were developed and cured using four different curing conditions. Compressive strength and flexural strength were determined for those eight combinations. Compared to high-performance fiber-reinforced cement composites (HPFRCC), the increase in compressive strength was in the range of 25-105%. Flexural strength was found to be similar to that of HPFRCC. Based on these strength results, one mixture proportion and two curing conditions were further selected for three bond tests, i.e., direct shear, slant shear, and pull-off. The results showed comparable bond strength in case of direct shear, 20% increase in slant shear, and 40% increase in pull-off when compared with other similar studies. (C) 2014 American Society of Civil Engineers.