Abstract Alkali-activated materials (AAM) are recognized as potential alternatives to ordinary Portland cement (OPC) in order to limit CO2 emissions as well as beneficiate several wastes into useful products. However, the alkali activation process involves concentrated aqueous alkali solutions, which are corrosive, viscous, and, as such, difficult to handle and not user friendly. Consequently, the development of so-called one-part or “just add water” AAM may have greater potential than the conventional two-part AAM, especially in cast-in-situ applications. One-part AAM involves a dry mix that consists of a solid aluminosilicate precursor, a solid alkali source, and possible admixtures to which water is added, similar to the preparation of OPC. The dry mix can be prepared at elevated temperatures to facilitate the reactivity of certain raw materials. This review discusses current studies of one-part AAMs in terms of raw materials, activators, additives, mechanical and physical properties, curing mechanisms, hydration products, and environmental impacts.

中文翻译：

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单组分碱活化材料：综述

摘要 碱活化材料 (AAM) 被认为是普通硅酸盐水泥 (OPC) 的潜在替代品，以限制 CO2 排放并将几种废物选为有用的产品。然而，碱活化过程涉及浓碱水溶液，其具有腐蚀性、粘性，因此难以处理且对用户不友好。因此，开发所谓的单组分或“仅加水”的 AAM 可能比传统的两组分 AAM 具有更大的潜力，尤其是在现浇应用中。单组分 AAM 涉及一种干混合物，该混合物由固体铝硅酸盐前体、固体碱源和可能添加水的混合物组成，类似于 OPC 的制备。干混合物可以在升高的温度下制备，以促进某些原材料的反应。本综述从原材料、活化剂、添加剂、机械和物理特性、固化机制、水合产物和环境影响方面讨论了单组分 AAM 的当前研究。