Impact of GGBS and Wollastonite as Partial Cement Replacement on Concrete's Properties

Every feasible way to reduce CO2 emissions is being developed in this era of widespread global warming, with the production of cement being one of the main sources of emissions. Many materials, including fly ash, GGBS, silica fume, wollastonite, and waste glass powder, are utilized in place of some cement in order to address this issue. Reducing environmental pollution can be achieved by substituting ground granulated blast furnace slag and wollastonite for some of the cement. A naturally occurring mineral, wollastonite is less expensive than cement. The purpose of this work is to ascertain how the wollastonite-GGBS (W-GGBS) combination affects the durability and mechanical qualities of M40-grade concrete. We investigate the concrete’s strength characteristics when wollastonite (5%, 10%, 15%, 20%) is added. If the ideal percentage of wollastonite replacement is maintained, then additional cement can be substituted with mineral admixtures, like GGBS (5%, 10%, 15%, 20%). According to test results, using cement in place of 15% wollastonite produces better results than using the standard mixture. A mixture containing 15% GGBS and 15% wollastonite showed the biggest strength gain.