Abstract
Cementitious binders have been used for the safe management of hazardous wastes. Acid concentrations of liquid waste that are intended to be solidified for storage in cementitious binders are relevant for the casting and long-term durability. In this contribution, the solidification of liquid waste that contains different quantities of sulfuric acid is reported with respect to the influence on early hydration kinetics. Additionally, the phase assemblage is characterized and compared to thermodynamic modeling. The data gathered shows that the quantity of sulfuric acid solution used has a clear influence on the phase assemblages and accelerates the hydration reactions. The balance between AFm phases and ettringite is also changed towards more ettringite formation for higher acid contents.
| Original language | English |
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| Publication date | 2023 |
| Number of pages | 4 |
| Publication status | Published - 2023 |
| Event | 16th International Congress on the Chemistry of Cement 2023: Further Reduction of CO2 -Emissions and Circularity in the Cement and Concrete Industry - Centara Grand & Bangkok Convention Centre at Centralworld, Bangkok, Thailand Duration: 18 Sept 2023 → 22 Sept 2023 Conference number: 16 https://www.iccc2023.org/ |
Conference
| Conference | 16th International Congress on the Chemistry of Cement 2023 |
|---|---|
| Number | 16 |
| Location | Centara Grand & Bangkok Convention Centre at Centralworld |
| Country/Territory | Thailand |
| City | Bangkok |
| Period | 18/09/2023 → 22/09/2023 |
| Internet address |
Keywords
- Sulfuric acid
- Hydration
- Ettringite
- Wastes
- Stabilization