Title : NEW GREEN INITIATIVES IN THE USE OF WASTE BY PRODUCTS OF STEEL INDUSTRY AS ALTERNATIVE GREEN MATERIALS FOR CONCRETE CONSTRUCTIONS IN INDIA
Authors : Manjunatha L R, Dr. Sandhya R Anvekar, Dr. MU Ashwath
Publication : 8 - 10, October 2015
Volume : 1
Pages :
Price : 250
Abstract : With ever increasing demand of raw materials for construction of roads and major infrastructure projects like highways, airports, ports, bridges, metros , smart cities and industrial townships, and rampant reclamation of natural resources, the environmental eco-balance and natural eco system is getting disturbed in India. Hence, there is an urgent need to preserve the precious natural resources like lime stone, river sand, aggregates etc, and find newer alternative materials. Some of the feasible and economical solutions that have emerged in recent years in India are to reuse the industrial process wastes or industrial by products through reprocessing suitably to use them as alternative materials in place of regularly consumed input raw materials in concrete. Iron and steel slag are industrial by-products those are manufactured under extensive quality control and can be used as mineral admixture in place of OPC cement and fine aggregates in civil construction as alternative to river sand also called slag sand. Slags can be used as cementitious material both as coarse and fine aggregates in mortar and concrete. Slag aggregates are comparable to natural aggregates in terms of strength and other property requirements and is extensively utilised in developed countries. The present paper highlights the new techniques developed for converting and using slags into Ground granulated blast furnace slag (GGBS) and fine aggregates and their usage in concrete and civil construction. Use of slag products like ggbs and fine aggregates will reduce environmental impacts, preserves precious natural resources and reduces the energy consumption in mining of like stone, stone crushing, and other activities.