| dc.contributor.author | Vinai, R | |
| dc.contributor.author | Soutsos, M | |
| dc.date.accessioned | 2018-11-14T13:44:58Z | |
| dc.date.issued | 2018-11-13 | |
| dc.description.abstract | A simple process to produce sodium silicate powder from glass cullet has been developed. A mixture of glass powder, sodium hydroxide powder, and water was heated at temperatures of 150 to 330 °C. The effects of glass to NaOH ratio, temperature and duration, inclusion of water and fineness of NaOH were investigated. Fly ash and fly ash/GGBS blends were the precursors for alkali activated binder (AAB) mortars produced with this sodium silicate. Compressive strengths were similar to or better than those obtained with commercially available sodium silicate and sodium hydroxide solutions. FT-IR tests suggested that the reactivity of the glass derived sodium silicate powder was related to the number of non-bridging oxygen atoms in the silicate structure. Cost comparison between AAB and Portland cement concretes gave similar results for normal strength concretes (35 MPa). AAB concretes with higher strengths (50 and 70 MPa) can be cheaper than equivalent traditional concrete. | en_GB |
| dc.description.sponsorship | The authors would like to thank Innovate UK-EPSRC, United Kingdom for providing funding for the project RESCIND “REcovery and uSe of Cement kIlN Dust as the alkali activator for Geopolymeric (Cementless) Concrete Building Blocks”, Grant Ref. EP/N508962/1. | en_GB |
| dc.identifier.citation | Vol. 116, pp. 45 - 56 | en_GB |
| dc.identifier.doi | 10.1016/j.cemconres.2018.11.008 | |
| dc.identifier.uri | http://hdl.handle.net/10871/34764 | |
| dc.language.iso | en | en_GB |
| dc.publisher | Elsevier | en_GB |
| dc.rights.embargoreason | Under embargo until 13 November 2019 in compliance with publisher policy | en_GB |
| dc.rights | © 2018. This version is made available under the CC-BY-NC-ND 4.0 license: https://creativecommons.org/licenses/by-nc-nd/4.0/ | en_GB |
| dc.subject | Alkali activated cement | en_GB |
| dc.subject | Glass | en_GB |
| dc.subject | Fly ash | en_GB |
| dc.subject | Granulated-blast furnace slag | en_GB |
| dc.subject | Waste-derived activator | en_GB |
| dc.title | Production of sodium silicate powder from waste glass cullet for alkali activation of alternative binders | en_GB |
| dc.type | Article | en_GB |
| dc.identifier.issn | 0008-8846 | |
| dc.description | This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record | en_GB |
| dc.identifier.journal | Cement and Concrete Research | en_GB |
