碱激发地聚物的反应机理、性能与应用的研究进展

    Recent Progress on Reaction Mechanism, Properties, and Application of Alkali-Activated Geopolymer

    • 摘要: 这是一篇陶瓷及复合材料领域的论文。碱激发地质聚合物(简称“地聚物”)是一种新型的无机胶凝材料,由硅-氧四面体和铝-氧四面体通过共用氧原子相互交联而形成,铝-氧四面体所带的负电荷通过碱金属阳离子平衡。由于具有高度聚合的氧化物网络结构,且结构稳定性高,地聚物具有优异的性能:高强度、耐久性、耐高温性等,使其在高性能建材的制备、废水的处理、固废资源化等领域得到广泛的应用与研究。为综合了解碱激发地聚物的研究现状,本文总结了国内外关于碱激发地聚物反应机理的研究现状,综述了地聚物微观结构与力学性能的最新进展,并介绍了其在建材、环境污染治理和固废资源化利用等领域的研究进展。

       

      Abstract: This is an essay in the field of ceramics and composites. Alkali-activated geopolymer is a new kind of inorganic cementitious material, which is formed by cross-linking of silicon-oxygen tetrahedrons and aluminum-oxygen tetrahedrons through the bridging oxygen atoms. The negative charges of aluminum-oxygen tetrahedrons are balanced by alkali metal cations. Due to its three-dimensional network structure, geopolymers have excellent properties such as high mechanical properties, good durability, and excellent heat resistance. They have been widely used in the high-performance construction materials preparation, wastewater treatment, and solid waste recycling. This article reviews the research progress of the reaction mechanism, microstructure, and mechanical properties of alkali-activated geopolymers. In addition, the development of its application research in the fields of building materials, environmental pollution control, and solid waste resource utilization is also introduced in this article in order to comprehensively understand the research status of alkali-activated geopolymers.

       

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