Utilization Of Corn Cob As A Partial Replacement Of Coarse Aggregate In Concrete Blocks

Demand for construction activity is on a steep rise due to an increase in population, which has led to a growth in industrialisation and urbanisation in the country by marshalling the way for infrastructure development resulting in heavy usage of natural resources. To implement such ventures concrete must be used which require an immense quantity of non-renewable resources such as Fine aggregates, Coarse aggregate, and Cement. Corn is one of the widely used grain all around the world, its impulsive nature towards wastage generation of about 50-70% as corncob has concerned a lot due to waste accumulation. Keeping in view of the availability of natural resources, rise in environmental pollution and waste deposition by construction industry, has motivated us to work on this aspect. In this paper, discussion is carried out on the influence of using corncob as a partial replacement to the coarse aggregate in the concrete mix. It aims at finding out the optimum percentage replacement for natural coarse aggregates, which can give us the similar or more strength and has the same amount of workability as compared to nominal concrete. Moulds were casted using cement, sand, coarse aggregate, corncob, and marble paste. Cubes were casted and tested for 7-days, 14-days & 28-days against compression loads to determine its compressive strength.