Scholarlink

<p>Alkali-activated cementitious materials (AACMs) have shown great potential in the field of construction materials due to their excellent properties, such as high early strength, good durability, and low energy consumption during preparation. However, AACMs based on high-calcium reactive precursors often exhibit excessively rapid setting and hardening, making the regulation of setting time a pressing issue. This paper presents a comprehensive review of recent advances in retardation methods for AACMs. First, the characteristics of the setting and hardening behavior of high-calcium alkali-activated system are described. Then, the effects and underlying mechanisms of various factors—such as the type of alkali activator, ambient temperature, chemical retarders (including inorganic and organic types), and sustained-release technologies for alkali activators (both chemical and physical)—on the setting time are discussed in detail. Finally, the advantages and limitations of different retardation methods are analyzed, providing theoretical guidance for the practical application of AACMs in engineering.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A review of setting retardation methods for alkali-activated cementitious materials

  • 期刊论文

  • 发表日期：

    2025年7月25日

查看全文
  • Aofei Guo,
  • Yunrui Zhang,
  • Hu Feng,
  • Zhenyun Yu,
  • Chengcheng Fan,
  • Fangping Hao,
  • Shenghao Lu,
  • Haowei Ma,
  • Youqian Geng,
  • Zhihui Sun,
  • Yunxing Du

摘要

Alkali-activated cementitious materials (AACMs) have shown great potential in the field of construction materials due to their excellent properties, such as high early strength, good durability, and low energy consumption during preparation. However, AACMs based on high-calcium reactive precursors often exhibit excessively rapid setting and hardening, making the regulation of setting time a pressing issue. This paper presents a comprehensive review of recent advances in retardation methods for AACMs. First, the characteristics of the setting and hardening behavior of high-calcium alkali-activated system are described. Then, the effects and underlying mechanisms of various factors—such as the type of alkali activator, ambient temperature, chemical retarders (including inorganic and organic types), and sustained-release technologies for alkali activators (both chemical and physical)—on the setting time are discussed in detail. Finally, the advantages and limitations of different retardation methods are analyzed, providing theoretical guidance for the practical application of AACMs in engineering.