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| Author(s): | Matos, Ana Mafalda; Sousa-Coutinho, Joana |
| Title: | ASR and sulphate performance of mortar containing industrial waste |
| Abstract: | “Greener” concrete using adequate industrial waste is a preferred option for sustainable construction. Alkali-silica reaction (ASR) and sulphate attack (SA) on concrete can be minimized by the use of mineral additions, which are particularly interesting if derived from waste. Grits from the paper industry, waste glass and two types of biomass ash were used as 10 % cement replacement in mortar and tested for ASR and SA. Results and scanning electron microscopy observations were compared with plain mortar and mortar containing commercial silica fume. All waste materials mitigated ASR compared with the control mortar. Resistance to sulphates was increased for one of the biomass ashes used and especially for glass powder, which surpassed silica fume. Therefore, two of these waste materials seem to be promising as partial replacement materials for cement, leading to enhanced durability and thus contributing to sustainable construction. |
| Source: | Structural Concrete 17 (2016), No. 1 |
| Page/s: | 84-95 |
| Language of Publication: | English |
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