Article pubs.acs.org/est
Up-Cycling Waste Glass to Minimal Water Adsorption/Absorption Lightweight Aggregate by Rapid Low Temperature Sintering: Optimization by Dual Process-Mixture Response Surface Methodology Costas A. Velis,*,†,‡ Claudia Franco-Salinas,† Catherine O’Sullivan,† Jens Najorka,§ Aldo R. Boccaccini,∥ and Christopher R. Cheeseman*,† †
Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K. School of Civil Engineering, University of Leeds, Leeds LS2 9JT, U.K. § Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, U.K. ∥ Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstr. 6 91058, Erlangen, Germany ‡
S Supporting Information *
ABSTRACT: Mixed color waste glass extracted from municipal solid waste is either not recycled, in which case it is an environmental and financial liability, or it is used in relatively low value applications such as normal weight aggregate. Here, we report on converting it into a novel glass-ceramic lightweight aggregate (LWA), potentially suitable for high added value applications in structural concrete (upcycling). The artificial LWA particles were formed by rapidly sintering ( F) R2 adj R2 pred R2 adj −R2 pred F Lack-of-fit (LoF) d.f. (LoF) P (LoF) LoF significant MS (pure error) d.f. (pure error) adequate model precision model term
none 1 1.14 42 0.027 13.45 12 1.12 41.21
