Study and Behaviour of M40 Grade Concrete using Steel Slag as Partial Replacement of Coarse Aggregate

India has an enormous growth in steel industries and slag is a byproduct of the same must be disposed of properly. Steel industries generate large quantities of slag from their iron-making and steel-making processes. Iron making slag are recycled in cement making and steel-making slag are dumped because they are unsuitable for the cement industry owing to the high iron content and other impurities Reuse of waste in integrated steel plants is important with regard to environmental and economic consideration. Steel slag is a byproduct of the iron ore and steel making industry. It is produced in large quantities and poses a substantial disposal problem. The generation of Steel slag in Indian steel plants is about 200 kg per ton of hot metal produced. Out of this only 25% is being reutilized in India compared to 70-100% in other countries. The objective of the present study is to study the possibility of using Steel slag as partial replacement of coarse aggregate and to compare the properties of the proposed concrete with that of existing conventional concrete. An experimental investigation was carried out to evaluate the effect of replacing coarse aggregate by Steel Slag on flexural strength and compressive strength of concrete. Coarse aggregate was replaced with three percentages (1%, 2%, and 3%) of Steel slag by volume in M40 grade of concrete with water cement ratio (w/c) 0.31.