A parametric strength study of jarosite waste. Issue 3 (21st February 2018)

• Record Type: Journal Article
• Authors: Gupta, Chayan; Prasad, Arun
• Is Part Of: Proceedings of ICE. Volume 170:Issue 3/4(2017:Nov.)
• Page Start: 149
• Page End: 161
• Publication Date: 2018-02-21
• Subjects: geotechnical engineering -- recycling & reuse of materials -- sustainability; Construction industry -- Environmental aspects -- Periodicals; Construction industry -- Waste disposal -- Periodicals; Construction industry -- Waste minimization -- Periodicals; 624.0286
• DOI: 10.1680/jwarm.17.00041
• Languages: English
• ISSNs: 1747-6526

Abstract

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 ( q u ) and split tensile strength ( q t ) 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, q u and q t increase non-linearly with the increase in lime and GGBS content. A power function has been fitted to assess the best relationship between q t / q u and L, t and G . Finally, a unique relationship between q t and q u is established – that is q t / q u, 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.