Effect of Addition of Different Types of Fibers and Cementitious Material Replacement on Mechanical Properties of Concrete

Concrete exhibits brittle nature it is not strong enough to resist tension. Fibers are used to enhance tensile strength to the concrete. They also increase many engineering properties of concrete. They are very helpful in controlling micro cracks and restricts crack propagation. The critical parameter we need to consider while describing fiber is "Aspect Ratio". It is defined as the ratio of length to diameter of the fiber. Mechanical properties of Fiber Reinforced Concrete (FRC) are very much got affected by the fiber type and its aspect ratio. Fly ash is broadly utilized as predominant alternative for Portland cement in construction sector. At the point when added to concrete, fly ash improves workability, strength, freeze thaw resistance, and reduce permeability. These advantages of fly ash over Portland cement make it a favored material for construction activities. The results clarified that utilization of fly ash in fiber reinforced concrete (FRC) impacts the both physical and mechanical properties of concrete.