Abstract
Alkali-activated mixtures are advantageous materials, being more sustainable and environmentally friendly as they do not contain cement. In this study, ground granulated blast-furnace slag was activated with sodium hydroxide solution and liquid sodium silicate. The use of ground waste glass as a source of silicate instead of sodium silicate was investigated. For this purpose, mortar specimens with sodium hydroxide content in different molarities were produced by replacing sodium silicate with ground waste glass. The mechanical and durability properties of the mixtures were examined under three different curing conditions: moist curing, air curing and air curing after 24 h at 60°C. The compressive and flexural strengths of the specimens were determined at the ages of 3, 7, 28 and 90 days. Capillary suction, water absorption, rapid chloride penetration, electrical resistivity, freeze-thaw and sulfate resistance tests were also performed. In consequence, it was found that waste glass can be used as an alternative silicate source in alkali-activated mortars.
| Original language | English |
|---|---|
| Pages (from-to) | 120-130 |
| Number of pages | 11 |
| Journal | Proceedings of the Institution of Civil Engineers: Engineering Sustainability |
| Volume | 174 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 6 Nov 2020 |
Bibliographical note
Publisher Copyright:© 2021 ICE Publishing: All rights reserved.
Funding
The authors would like to thank Baris Ciner and Gokalp Ciner, of Ciner Construction and Transportation Ltd Co., for providing GGBFS. The authors also thank Oytun Emre, of Chryso Inc., for the great support in performing this study.
| Funders | Funder number |
|---|---|
| Chryso Inc. |
Keywords
- recycling & reuse of materials
- sustainability
- waste management & disposal
