Effect of using dimensional stone waste sourced from Lorestan Province on the performance of high-strength self-compacting concrete

Producing enormous quantities and continuous stockpiling of granite industrial by-product enforced researchers to utilize this waste in a sustainable state in concrete to diminish its adverse impacts on the ecosystem. This study aims to experimentally investigate the possibilities of reusing granite waste sourced from Lorestan Province in fiber-reinforced self-compacting cementitious composite using hooked-end steel fibers. The L-box and U-box tests were performed to assess the fresh properties of mixes, whereas compressive strength, flexural strength, ductility, flexural toughness, and tensile strength tests were conducted for measuring the hardened properties of self-compacting concrete mixes. Results of the fresh properties tests for all of the steel fiber reinforced-recycled aggregate mixtures were found within the satisfactory limit of standard. In other words, the incorporation of granite waste in self-compacting concrete augmented the hardened properties. It should be noted that the effects of simultaneous use of granite waste and steel fiber in improving the tensile strength, flexural performance, ductility, and bending toughness of the specimens are higher than the compressive strength. In specimens without steel fiber, brittle failure occurred immediately after the formation of the first crack. With the increasing percentage of steel fibers in the samples, the ductility increased, and the ductile failure occurred in samples.