An Experimental Investigation on Strength Characteristics of Hybrid Fiber Reinforced Concrete by Partial Replacement of Fine Aggregate with Bottom Ash

In the process of the growth of the industry large quantum of concrete is being utilized to cater the requirements of the industry, which requires huge raw materials in the production of the concrete for construction. Out of all the raw materials of concrete, lesser availability of the sand is a major concern in the construction industry. Day by day sand is getting costlier which directly increases cost of construction hence there is a need to evaluate the possible alternate materials that can be used as substitute in concrete without losing any of the properties of the concrete which are economically and easily available. The present work has been carried out with M25 grade concrete with w/c ratio 0.45. Bottom ash is replaced in 10%, 20%, and 30% by weight to the natural sand. Polypropylene fibers and WPE fibers are added as 0.75% and 0.25% by weight of cement respectively. The effect of bottom ash replaced with natural sand with addition of polypropylene fibers and WPE fibers is compared with that of the conventional concrete at different curing period, the optimum content of the bottom ash is found to be at 20% with Polypropylene fibers and WPE fibers are added as 0.75% and 0.25% by weight of cement.