Progressive Investigation on Utilisation of Steel Slag and Silica Sand as Partial Replacements for Coarse and Fine Aggregate in Concrete

Waste disposal research is recently focused on analysing industrial waste for economic, environmental, and technological reasons. Steel slag, which has a rougher surface than natural aggregates, is a denser waste product of the steel foundry and allows for greater particle conformance to the cement matrix. Due to silica sand's ability to fill tiny spaces, the pores in concrete are reduced by increasing the density of the concrete. This research study aims to partially replace coarse aggregate and sand (fine aggregate) with steel slag and silica sand, respectively. Here, the replacement is carried out in various portions, such as 10, 20, 30, and 40%, and its impact on the characteristics of concrete is also examined. According to the study's findings, silica sand and steel slag may be used effectively as coarse and fine aggregate with up to 30% swapping and a noticeable improvement in strength.