Non Destructive Analysis of Concrete using Coconut Husk

Concrete reinforcement technology is not new and fibers have been used for reinforcement since ancient times. Popular fibers are made up of steel and glass, while plastic and nylons have a limited use. Quantities, concentration, and dispersal influence the properties of fiber reinforced concrete. Fiber reinforced concrete is a type of concrete that includes fibrous substances that increase its structural strength and cohesion. Fiber reinforced concrete has small distinct fibers that are homogeneously dispersed and oriented haphazardly. Fibers used are steel fibers, synthetic fibers, glass fibers, and natural fibers. The characteristics of fiber reinforced concrete are changed by the alteration of certain factors: type and quantity of fibers, geometric configuration, dispersal, direction, and concentration. In this project coconut fibers are added in concrete by weight of cement in the proportion of 0.5%, 1%, 1.5%, 2% and 2.5%. Nondestructive test like rebound hammer test is performed on concrete cubes after 7 and 28 days of curing and also to validate the results compressive strength is also performed on the concrete cubes.