M100 concrete probing on quinary cementitious matrix incorporated with industrial ferrochrome slag sand

Abstract

The potential exploration of micro (10−6) and nano (10−9) sized binders and Ferrochrome slag sand (FSS) is supplanted and discussed in the M100 concrete. Supplementary Cementitious Materials (SCM) and FSS are supplanted in concrete to sustain and minimize the exploitation of resources. The clinker products are diminished by replacing SCM like Metakaolin (MK) of 8, 10, and 12% and Nanosilica (NS) of 0.5, 1 and 1.5%. Besides, the FSS (10, 20, 30, 40, 50, and 100%) is incorporated in the place of crushed sand (Csand). The in-depth material characterization demonstrates the shape, micro texture, and elemental analysis. The optimum mix (F4) has a compressive strength of 126.08 N/mm2 at 28 days. The densely hydrated cluster (CSH(H&L)) in the F4 mix are an intellectual cause of strength gain. The microstructure with Hadley grain (Peeling bark) in the F10 mix is a root for the strength degradation. The MgO in slag escalates the strength at 365 days. The Packing action of SCM and FSS are schematized. The TGA plot of the F4 mix has a significant (−9.34%) silicate hydrate peak than referral concrete (RC). The Global warming potential (GWP) of the F4 mix saves 12.96% emission of CO2 than RC.