This paper aims to investigate and understand the effect of two different types of discrete fibers and various volumes on the mechanical properties of concrete by using the cylinder and beam specimens. Additionally, the excremental results were simulated by the Finite Elements Method (FEM) through the ANSYS software program. The mechanical properties for seven cases in this study related to Fiber Reinforced Concrete (FRC) included compressive strength, modulus of elasticity, break strength, modulus of rupture, and flexural toughness. The outcome of the study indicated that low volume fraction of the steel and Polyvinyl Alcohol (PVA) fibers have little effect on the flexural capacity of concrete pavement. However, steel fibers provide improvements that are more significant in toughness and residual strength than PVA fibers. Adding 0.4 and 0.6% steel fibers to concrete pavement provided flexural toughness up to 82 and 94 N.m, which is about 137 and 156 times, respectively. The analytical analysis by ANSYS software provided results that are close to experimental work with a comparatively safer design.
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