RETRACTED: Mechanical performance of concrete reinforced with polypropylene fibers (PPFs)

[EN] Fibers are one of the most prevalent methods to enhance the tensile capacity of concrete. Most researchers focus \non steel fiber reinforced concrete which is costly and easily corroded. This study aims to examine the performance \nof polypropylene fiber reinforced concrete through different tests. PPFs were added into concrete blends in a \npercentage of 1.0%, 2.0%, 3.0%, and 4.0% by weight of cement to offset its objectionable brittle nature and improve \nits tensile capacity. The fresh property was evaluated through slump cone test and while mechanical strength was \nevaluated through compressive strength, split tensile strength flexure strength, and flexure cracking behaviors after \n7-, 14-, and 28-days curing. Results indicate that slump decrease with the addition of PPFs while fresh density increase \nup to 2.0% in addition to PPFs and then decreases. Similarly, strength (compressive strength; split tensile strength, \nand flexure strength) was increased up to 2.0% addition of PPFs and then decrease gradually. It also suggests that \nDuctility; first crack load, maximum crack width, and load-deflection inter-relations were considerably improved due \nto incorporations of PPFs.