EVALUATION OF MECHANICAL PROPERTIES OF CONCRETE BY USING BASALT FIBER WITH SILICA FUME

Abstract

Worldwide, a great deal of research is currently being conducted concerning the use of fiber reinforced plastic wraps, laminates and sheets in the repair and strengthening of reinforced concrete members. in this paper to investigate the effect of replacing cement with silica fume and adding basalt fiber and study its mechanical properties and durability. to characterized mechanical properties and durability.110 specimens with different fiber proportion 0.7%,0.8%,0.9% ,1.2% with the replacing cement with 10% silica fume. the mechanical and durability properties of concrete, apart from different curing regimes only normal water curing has been chosen. Performance of the various mixes is tested by the compressive strength, split tensile strength and flexure strength. A cube specimen of size 150mmX150mm X150mm, cylindrical specimen of size 100 mm dia X 200 high mm and beam specimen of size 150mm × 150 mm × 700mm were cast and demoulded after 24 hours then they allowed for normal water curing also performed SEM analysis. The results show improvement in compressive strength, split tensile strength and flexural strength in cement replaced mixes with adding basalt fiber. The maximum compressive strength, split tensile strength and flexural strength value that can be achieved in this study with the silica fume content of 10% cement replacement and adding 0.9% basalt fiber.