FEASIBILITY STUDY OF ELECTRIC ARC FURNACE SLAG AS FINE AGGREGATE IN GGBS INCORPORATED CONCRETE

Civil Engineering

NATIONAL CONFERENCE ON TECHNOLOGICAL ADVANCEMENTS IN ENGINEERING

Over the past few years, ground granulated blast furnace slag (GGBS) have been considered as an alternative material for ordinary portland cement (OPC) in conventional concrete for attaining sustainability in construction industry. The GGBS can be used as an alternative material for OPC since it has binding properties. Also it reduces the problems due to the production of OPC like emission of carbondioxide, utilization of high amount of natural resources etc. This research investigates the feasibility of electric arc furnace slag (EAFS) as fine aggregate in GGBS incorporated concrete. Use of industrial byproducts like GGBS and EAFS makes their reutilization in concrete and hence reduces the cost of cement production, concrete manufacturing, reduction in landfill cost as well as reduction in solid waste. Characteristics of EAFS like pH, loss of drying, calorific value and presence of heavy metals like Zn, Cd, Ni, Pb, Cu were studied according to central pollution control board (CPCB) limit. Concrete cubes with different percentages of replacement (0, 10, 20, 30, 40, and 50) of fine aggregates with EAFS in GGBS incorporated concrete was tested to find the optimum percentage. EAFS was found to be a non hazardous industrial byproduct of steel industry, which is suitable to be used as a material for construction. It was observed that compressive strength of concrete cubes was improved up to 30% of replacement of EAFS. It is concluded that utilization of EAFS in concrete will reduce the requirement for conventional fine aggregate and manufactured fine aggregate thereby resulting a sustainable way to utilize industrial by-products.

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