Cement concrete is the most extensively used construction material in the world. The reason for its extensive use is that it provides good workability and can be moulded to any shape. This paper deals with the comparative study on percentage increase in the compressive strength of M20 and M25 grade concrete mixes after addition of various proportions of hooked and crimped steel fibers under standard curing conditions. The main aim of the investigation is to compare the different grades of concrete by adding hooked and crimped steel fibers of varying fiber content such as 0. 5%, 1%, 1. 5%, 1. 75% by volume of concrete. The concrete specimens have been tested at different age levels for checking the compressive strength of concrete. Cube moulds of size 150mm X 150mm X 150mm to check the compressive strength have been casted. All specimens have been casted for a period of 7 and 28 days before crushing. The results of fiber reinforced concrete for 7 days and 28 days curing with varied percentage of hooked end and crimped steel fiber were studied for M20 and M25 mixes and it has been found that there is significant strength improvement in steel fiber reinforced concrete. Also, it has been found that improvement or percentage increase in compressive strength is more in case of M20 than in M25.

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Sfrc Aspect Ratio Steel Fiber Concrete Crack