A STUDY ON FIBER REINFORCED HIGH PERFORMANCE CONCRETE USING MULTIPLE MINERAL ADMIXTURES

H.M.Somasekharaiah, Mahesh Sajjan, Nelson Mandela

Abstract: HPC could be a concrete that has been designed to be additional harder and stronger than typical concrete. HPC mixtures area unit primarily composed of constant materials as typical concrete mixtures. However the proportions area unit designed or designed to supply the strength and sturdiness required for the structural and environmental needs of the project. The main objective of this project is to evaluate the strength & behavior of HPC, with using of admixtures combinations of steel fibers and polypropylene fibers. This investigation has been made to increase the strength of concrete by adding supplementary binder materials like fly-ash, silica fume, metakaolin along with steel and polypropylene fibers. The cubes, cylinders and beams specimens (moulds) are casted with concrete by using primary ingredients such as cement, water, fine aggregate and course aggregate, apart from this Cement is replaced with 22.5% of mineral admixtures (i.e. 7.5% of each Silica fume, Metakaolin and Fly ash) and 37.5% of mineral admixtures (i.e. 12.5% of each Silica fume, Metakaolin and Fly ash) further addition of crimped steel fibers with varying percentage of 0% and 0.5%, along with the polypropylene fibers to 0.25% are added to enhance tensile and flexural strength. The casted specimens are cured with water for 7 days and 28 days to evaluate the compressive strength, split tensile strength and flexural strength

Keywords: Silica Fume, Metakaolin, Fly ash, steel fiber, polypropylene fiber, super plasticizer, strength properties.

DOI: https://doi.org/10.15623/ijret.2015.0410067