• Jayasree

The need to preserve diminishing natural resources and increase reuse, recycling or reprocessing, with disposal being the last resort has become an issue of great importance in the modern society . Many researches and policies have been driven in this support to ensure that these sustainable goals are met. Use of iron and steel making slags represent an excellent success story consistent with these goals. Generated as by-products in the manufacture of iron and steel, these reprocessed materials provide opportunities in road construction and maintenance to recycle on a large scale. Typically, for ore feed containing 60 to 65% iron, blast furnace (BF) slag production ranges from about 300 to 540 kg per tonne of pig or crude iron produced. Lower grade ores yield much higher slag fractions, sometimes as high as one tonne of slag per tonne of pig iron produced. Steel slag output is approximately 20% by mass of the crude steel output. Hence, an effort is made in this study to use slag as aggregates that aims in reducing the carbon footprint of steel sector in line with the INDC targets. This study is based on experimental analysis of designing a concrete mix with M45 grade using Slag Aggregates i.e, Steel Slag, Air-Cooled Blast Furnace Slag and Granulated Blast Furnace Slag as a partial replacement by weight for fine and coarse aggregate. The mixes are designed as per IS: 10262-2009. Further, cost comparison is made for a cement concrete pavement with and without the use of slag aggregates. The results show a significant increase in compressive strength and flexural strength by 24.33 % and 45 % respectively and an average cost saving of 22% in pavement construction

recycling, reprocessed materials, blast furnace slag, slag aggregates

"Strength and Behaviour of Concrete with Slag Aggregates for Pavement Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 2, page no.62-67, February 2018, Available :http://www.jetir.org/papers/JETIR18MG013.pdf

"Strength and Behaviour of Concrete with Slag Aggregates for Pavement Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 2, page no. pp62-67, February 2018, Available at : http://www.jetir.org/papers/JETIR18MG013.pdf