碱激发多元复合胶凝材料研究进展

Research Progress of Alkali Activated Multi-Component Composite Cementitious Materials

为实现“碳中和”的目标以及工业废渣的合理利用,绿色建筑材料的应用将逐渐成为主流,其中,碱激发材料成为研究的热点。本文通过水化过程、产物和微观结构阐述碱激发多元复合胶凝材料的水化机理,介绍各类材料的特点和制备方法,总结碱激发矿渣/粉煤灰基复合体系、偏高岭土基复合体系、赤泥基复合体系的性能,包括强度、流动度、凝结时间、固化性等。对今后碱激发多元复合胶凝材料的开发和应用提供一定的参考,并对未来的研究重点提出建议。

In order to achieve the goal of “carbon neutralization” and the rational utilization of industrial waste residue, the application of green building materials will gradually become the mainstream, among which alkali activated materials become the research focus. This paper describes the hydration mechanism of alkali activated multi-component composite cementitious materials through the hydration process, products and microstructure, introduces the characteristics and preparation methods of various materials, and summarizes the properties of alkali activated slag/fly ash-based composite systems, metakaolin-based composite systems, and red mud based composite systems, including strength, fluidity, setting time, solidification, etc. It provides some reference for the development and application of alkali activated multi-component cementitious materials in the future, and puts forward suggestions for future research focus.