• Mrs. Preeti Sharma

Jarosite is a waste material produced during the extraction of zinc ore concentrate by hydrometallurgy operation. Jarosite released from the zinc metal extraction process is hazardous and its worldwide disposal has become a major environmental concern. The annual production of Jarosite material is about 0.5 million tons from Hindustan Zinc Ltd., Chittorgarh, Rajasthan state, India. The unutilized accumulated material is about 1.5 million tons. This research was conducted to investigate the performance of fresh and hardened concrete containing Jarosite as a replacement for cement. Concrete performance was evaluated concerning compressive strength, flexural strength and shrinkage limit. Based on the results generated during the study, the following conclusions can be drawn. The study has revealed that Jarosite is a very fine material. Its higher fineness influences most of the properties of green and hardened concrete. It reduces the workability of concrete mix. In other words, the water demand of the mix is increased when jarosite is used in partial replacement of cement. Due to an increase in water demand, higher water content is required for achieving the desired workability. Jarosite can be advantageously blended with Ordinary Portland Cement (OPC) up to 10% (by weight of OPC) at the clinker grinding stage. Jarosite blending up to 10 per cent increases in compressive and flexural strength of concrete of M30 Grade Concrete.

Jarosite, Compressive Strength, Flexural Strength, Ordinary Portland Cement, Workability.

"Effect of Jarosite Waste on Pavement Quality Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 6, page no.f109-f119, June-2021, Available :http://www.jetir.org/papers/JETIR2106715.pdf

"Effect of Jarosite Waste on Pavement Quality Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 6, page no. ppf109-f119, June-2021, Available at : http://www.jetir.org/papers/JETIR2106715.pdf