Variables controlling strength of lime stabilized jarosite waste

Abstract

The study advocates the infuence of lime (L) and curing period (t) on stabilization of jarosite waste. A number of laboratory strength tests [unconfned compressive (qu) and split tensile strength (qt )] are conducted on artifcially cemented jarosite-lime blends (lime=2.5–10%) with diferent curing periods (t=7, 28 and 90 days). The outcomes indicate that both qu and qt increase nonlinearly with the increase in lime content and curing period, which is further justifed by microstructural study that illustrates the occurrence of larger agglomeration in particles. In addition to these, a good correlation between qu and qt and L and t was possible by ftting the power function on the outcomes. Furthermore, a unique relationship between qu and qt is also developed, which is independent of L and t (i.e. qt /qu=0.16)