A parametric strength study of jarosite waste

Abstract

A parametric study that controls the compressive and tensile strengths of artificially cemented jarosite has been made. The present work advocates the leverage of lime (L), ground granulated blast-furnace slag (GGBS) (G) and curing period (t) in quantifying the unconfined compressive strength (qu) and split tensile strength (qt) of artificially cemented jarosite. A number of strength tests are carried out on jarosite stabilised with various contents of lime (2·5-10%) and GGBS (10-40%). The results show that both, qu and qt increase non-linearly with the increase in lime and GGBS content. A power function has been fitted to assess the best relationship between qt/qu and L, t and G. Finally, a unique relationship between qt and qu is established - that is qt/qu, being independent of all the above-listed parameters. The microstructural study also shows the presence of larger agglomeration of particles on addition of GGBS and lime, implying an increase in strength of stabilised jarosite waste. © 2018 ICE Publishing: All rights reserved.