Abstract
There is no consensus on which hydration stoppage method is optimal to preserve the microstructure and mineral composition of samples, especially considering the specific aspects of different testing methods, such as TGA, MIP, or XRD. This paper presents a quantitative comparison between the most popular hydration stoppage strategies and parameters such as the sample piece size, the soaking time in a solvent, and the type, as examined on cement paste hydrated for 7 days. It was found that the carbonation appears either for samples smaller than 2.36 mm and bigger than 4.75 mm or samples soaked in a solvent for longer than 1 h. Fast solvent replacement leads to ettringite diminution and total pore volume increase. Among others, solvent replacement with subsequent gentle heating under a vacuum was found to be the most efficient, whereas it was experimentally demonstrated that isopropyl alcohol stops hydration faster than ethanol and acetone.
| Original language | English |
|---|---|
| Article number | 1080 |
| Journal | Sustainability (Switzerland) |
| Volume | 15 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 2023 |
Keywords
- hydration stoppage
- sample piece size
- soaking time
- solvent replacement
All Science Journal Classification (ASJC) codes
- Computer Science (miscellaneous)
- Environmental Science (miscellaneous)
- Geography, Planning and Development
- Energy Engineering and Power Technology
- Hardware and Architecture
- Management, Monitoring, Policy and Law
- Computer Networks and Communications
- Renewable Energy, Sustainability and the Environment
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