Effect of Different Mineral Admixtures on the Performance of Pavement Quality Concrete Containing the Optimum Amount of Jarosite as Partial Replacement of Cement

In the current paper, ternary blends of Portland cement, jarosite (15%), and fly ash/silica fume (5%, 10%, and 15%) as a cementitious material to develop sustainable pavement quality concrete mix have been investigated. Fresh property results suggest the increment in the usage of superplasticizer to maintain the slump between the acceptable range. The mechanical and durability characteristics were found to be improved up to 5% dose of fly ash/silica fume in the 15% jarosite reference mix. However, the observed enhancements were more prominent in the silica fume mixes than the fly ash mixes. The leaching of toxic heavy metals was also found within acceptable limits. Further, the results showed that pavement quality concrete containing the optimal amount of jarosite (15%) could be made more durable, economical, and environmentally friendly by using high pozzolanic mineral admixtures like fly ash and silica fume as partial replacement of cement.