A Review on Strength Characteristics on Flyash Based Fiber Reinforced Concrete

The compressive strength of concrete is one of the most important Properties of concrete in most structural application concrete is implied primarily to resist compressive stress. In the investigation, conventional concrete and fly ash based coconut fiber composite, concrete cubes of 150mm x 150mm x 150mm sizes were used for testing the compressive strength The cubes are tested in a compression-testing machine of capacity 2000kn. The load has been applied at a rate of 315kn/mm. The load applied in such a way that the two opposite sides of the cubes are compressed. The load at which the control specimen ultimately fails is noted. Compressive strength of concrete mixes made with and without fly ash and coconut fiber with different percentage and variation in length of fiber were determined at 7, 14, and 28 days of curing. The test results are given in table and shown in figure. The maximum compressive strength was obtained for a mix having a fiber length of 40 mm, 10% fly ash and fiber content of 0.25% by weight and increase in strength over plain concrete and fly ash concrete without fiber content.