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<p>Alkali-activated materials represent a promising class of green and low-carbon cementitious materials with significant development potential. Based on the current dynamic load conditions of concrete, the dynamic mechanical properties of alkali-activated materials under impact load were reviewed. First, the advantages and disadvantages of the Split Hopkinson Pressure Bar (SHPB) system are evaluated, and improvement measures are proposed. Then, the effects of fiber, binder, alkali activator, water-binder(W/B), aggregate, temperature, and particle size on the dynamic mechanical properties of alkali-activated materials are discussed. The results show that for the SHPB test of alkali active materials, the optimal aspect ratio is 0.5, the thickness of the brass pulse shaper should be more than 0.9&#xa0;mm, and the lubrication dose should be at least 11.3&#xa0;mg/cm<sup>2</sup> to achieve the best effect. In addition, high-calcium systems contribute to the formation of C-A-S-H gels, while different types of fibers have varying effects on material properties. This comprehensive review not only advances the fundamental understanding of dynamic behavior in alkali-activated materials but also establishes a methodological framework and identifies key research directions for future developments in sustainable construction materials science.</p>

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A Review on Dynamic Mechanical Properties of Alkali-Activated Cementitious Materials under Impact Load

  • 期刊论文

  • 发表日期：

    2025年11月17日

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  • Hongqiang Ma,
  • Congcong Fu,
  • Zelong Lei,
  • Chenyu Cao,
  • Xiaoyan Niu

摘要

Alkali-activated materials represent a promising class of green and low-carbon cementitious materials with significant development potential. Based on the current dynamic load conditions of concrete, the dynamic mechanical properties of alkali-activated materials under impact load were reviewed. First, the advantages and disadvantages of the Split Hopkinson Pressure Bar (SHPB) system are evaluated, and improvement measures are proposed. Then, the effects of fiber, binder, alkali activator, water-binder(W/B), aggregate, temperature, and particle size on the dynamic mechanical properties of alkali-activated materials are discussed. The results show that for the SHPB test of alkali active materials, the optimal aspect ratio is 0.5, the thickness of the brass pulse shaper should be more than 0.9 mm, and the lubrication dose should be at least 11.3 mg/cm2 to achieve the best effect. In addition, high-calcium systems contribute to the formation of C-A-S-H gels, while different types of fibers have varying effects on material properties. This comprehensive review not only advances the fundamental understanding of dynamic behavior in alkali-activated materials but also establishes a methodological framework and identifies key research directions for future developments in sustainable construction materials science.