Improving sustainability of concrete construction with jarosite-based recycled aggregate concrete

Abstract

Abstract In this study, the impacts of substituting jarosite for a portion of the cement in recycled aggregate concrete (RAC) were examined. In place of some of the cement in concrete, jarosite, a waste product of the zinc manufacturing sector, has been used. The performance of Jarosite in recycled aggregate concrete has been investigated experimentally in terms of the fresh properties of the concrete and the properties of hardened concrete in terms of mechanical and durability properties, such as compressive strength, split tensile strength, water absorption and non-destructive test of the concrete. The technique uses five different mixes in total, one of which is the control mix, and rest was made by substituting jarosite for a portion of the cement in amounts of 0, 10, 15, and 20% in RAC. It was discovered that adding jarosite did not significantly change the properties of fresh concrete because they were still well within the required range. The mechanical qualities of RAC were found to improve when the percentage of Jarosite was increased by up to 15%, according to laboratory tests. Additionally, compared to the control concrete mix, the durability qualities of the Jarosite mixture performed better, and the moisture absorbing capabilities also enhanced. As a result of the study, it is possible to utilise up to 15% of jarosite in place of cement in recycled aggregate concrete without sacrificing the concrete’s engineering quality.