Behaviour of Polypropylene Fibre on the Mechanical Charateristics of Fibre Reinforced Concrete using Polypropylene Fibers

Concrete as a building material, used most extensively has revolutionized the construction industry by its properties like high strength and workability. However, the engineering structures are surrounded by the combustible materials, making them prone to the blast impact loading as well as fire. Concrete structures which are subjected to the conditions of high temperature, are susceptible to physical and chemical changes leading to their degradation. The fire can cause the damage to the structure as well as human lives. The need of the hour is to study the impact of fire on the concrete structures as it is mostly used as the construction entity in buildings and other structures. In our research paper, the use of Polypropylene fibers (PPFs) in concrete and their impact on various attributes of concrete like Compression stréngth, split tensile and flexurál strength has been studied. The impact of PPFs on concrete at different temperatures has also been analyzed. The results have shown that the compression strength got raised due to the inclusion of PPFs in the concrete by 9.08%, splitting tensile by 59.25% and flexural strength by 27.36% after 4 weeks of curing. The addition of PPFs to the concrete has also resulted in an increase in strength then the conventional concrete at temperatures of 400oC and 800oC.