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<p>To mitigate the substantial environmental burden of cement production, this study investigates high volume GGBFS as a sustainable cement alternative. Early hydration calorimetry, X-ray diffraction, thermogravimetric analysis, and Fourier transform infrared spectroscopy were used to characterize the effect of GGBFS on the cement hydration reaction. Scanning electron microscope and mercury intrusion porosimetry were employed to study the changes of micro-morphology and pore structure of pastes at different ages. The results indicate that the optimal performance of compressive strength in the hardened paste occurred at a 40% GGBFS content, yielding 42.5&#xa0;MPa at 28&#xa0;days. Even if 80% GGBFS is added, the compressive strength of the paste at 90&#xa0;days can attain 38&#xa0;MPa. The incorporation of GGBFS significantly reduces the hydration heat release of the cementitious material and affected the microstructure of the specimens. The introduction of 40% GGBFS can prolong the hydration induction period and induce a secondary acceleration effect, as well can refine the pore size distribution, and diminish the porosity of the paste.</p>

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Hydration properties of cement paste containing high volume ground granulated blast furnace slag (GGBFS)

  • 期刊论文

  • 发表日期：

    2025年7月28日

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  • Maosen Li,
  • Lu Wang,
  • Jun Wang,
  • Xi Li,
  • Fenlian Xu,
  • Shuhua Liu

摘要

To mitigate the substantial environmental burden of cement production, this study investigates high volume GGBFS as a sustainable cement alternative. Early hydration calorimetry, X-ray diffraction, thermogravimetric analysis, and Fourier transform infrared spectroscopy were used to characterize the effect of GGBFS on the cement hydration reaction. Scanning electron microscope and mercury intrusion porosimetry were employed to study the changes of micro-morphology and pore structure of pastes at different ages. The results indicate that the optimal performance of compressive strength in the hardened paste occurred at a 40% GGBFS content, yielding 42.5 MPa at 28 days. Even if 80% GGBFS is added, the compressive strength of the paste at 90 days can attain 38 MPa. The incorporation of GGBFS significantly reduces the hydration heat release of the cementitious material and affected the microstructure of the specimens. The introduction of 40% GGBFS can prolong the hydration induction period and induce a secondary acceleration effect, as well can refine the pore size distribution, and diminish the porosity of the paste.