Utilization of iron and steel slag in building construction

Abstract

The production of cement results in emission of greenhouse gases in atmosphere. The concrete industry is constantly looking for supplementary cementitious material with the objective of disposing the industrial waste sustainably. The usage of complementary cementitious leads to several possible improvements and enhancement in the concrete composites, as well as the overall economy. Ground Granulated Blast Furnace Slag (GGBS) has been constantly in use as cement replacement for sustainable infrastructure. GGBS is a waste product from the iron industry, which can be used as a substitute for cement. GGBS can be used as a substitute cementitious material, reducing cement consumption and reducing cost of construction. The use of industrial waste products saves the environment and conserves natural resources. The partial replacement of GGBS with cement has developed as an important alternative to conventional concrete and has quickly attracted the attention of the concrete industry through its savings in cement, energy savings, cost savings and environmental benefits and socio-economic. The partial replacement of GGBS as a cementitious material to cement gives high compressive strength, low heat of hydration, resistance to chemical attack, improved workability, and good durability, environment friendly and cost-effective. Now days, iron and steel slag is used in many areas where its unique characteristics can be used effectively. Due to the growing environmental awareness, iron and steel slags are highly regarded as a recycled material that can reduce environmental impacts due to their conservation and the saving of resources. The increase in the demand for concrete ingredients is satisfied with the partial replacement by waste products that are obtained through various industries. Steel Melting Shop (SMS) slag is a waste generated during the production of steel. This waste is disposed in the form of landfills that cause a large amount of land contamination. Therefore, to meet the growing demand to protect the natural environment, especially in construction areas, the need to use this waste is very important. Therefore, replacing some natural aggregates with steel slag would result in considerable environmental benefits. Blast Furnace Slag (BFS) results in production of GGBS which is a by- product of iron industry and have the potential to replace cement in concrete. Thus, this study explores the use of GGBS and SMS slag as partial replacement to cement and coarse aggregate respectively. Further the study is extended by making a plan of residential building on AUTOCAD in which green concrete containing 55% of GGBS and 50% of SMS as partial replacement to cement and coarse aggregate respectively has been executed. The cost analysis of the building is carried out, which has helped in curtailing the cost of concrete by 22.61%.