Results in Materials (Sep 2024)

Heat of hydration of Portland cement containing coal-derived char at different temperatures

  • Hua Yu,
  • Prayush Jonchhe,
  • Chooikim Lau,
  • Kam Ng

Journal volume & issue
Vol. 23
p. 100595

Abstract

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The heat of hydration is fundamental in understanding the hydration mechanism of cementitious materials, and temperature can significantly affect the heat of hydration. A recent study has shown that coal-derived char can be used as a green additive for improving the engineering properties of conventional cement grout. However, the impact of temperature on heat of hydration of char-cement grout is currently unknown. In this study, the heat of hydration (with degree of hydration) of cement and char-cement grouts at 5, 23, and 35 °C are investigated. This study reveals that incorporating char into the cement grout enhances its degree of hydration at temperatures ranging from 5 to 35 °C, highlighting the potential advantages of using coal char in grouting applications, especially at low temperature.

Keywords