While the density of the fiber-reinforced concrete (FRC) is determined right away after the concrete mix has been
prepared, the compressive strength and split tensile strength of the FRC are tested 7 and 28 days after it has been cured. As a result of adding polypropylene fibre, new fiber-reinforced concrete (FRC) has a marginally or barely decreased density from 2397 kg/m3 to 2393 kg/m3, according to the results in laboratory.