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A Comparative Study of Factors Influencing Hydration Stoppage of Hardened Cement Paste

Author

Listed:
  • Alexander Mezhov

    (Division of Technology of Construction Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany
    Faculty of Civil and Environmental Engineering, Technion–Israel Institute of Technology, Haifa 3200003, Israel)

  • Daniele Kulisch

    (Faculty of Civil and Environmental Engineering, Technion–Israel Institute of Technology, Haifa 3200003, Israel)

  • Antonina Goncharov

    (Faculty of Civil and Environmental Engineering, Technion–Israel Institute of Technology, Haifa 3200003, Israel)

  • Semion Zhutovsky

    (Faculty of Civil and Environmental Engineering, Technion–Israel Institute of Technology, Haifa 3200003, Israel)

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.

Suggested Citation

  • Alexander Mezhov & Daniele Kulisch & Antonina Goncharov & Semion Zhutovsky, 2023. "A Comparative Study of Factors Influencing Hydration Stoppage of Hardened Cement Paste," Sustainability, MDPI, vol. 15(2), pages 1-21, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:2:p:1080-:d:1027577
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