Published Paper Details:

India has an enormous growth in steel industry and Slag is a byproduct of the same which has to be disposed properly. Steel industry generate large quantities of Slags from their iron-making and steel-making processes. Iron making Slags are recycled in cement making and steel-making Slags 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. LD 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 letters LD means Linz and Donawitz, towns in Austria where the process was invented. The generation of LD 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 LD 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 LD Slag on flexural strength and compressive strength of concrete. Coarse aggregate was replaced with three percentages (1%, 2% and 3%) of LD Slag by volume in M25 grade of concrete with 0.5 water cement ratio (w/c).