Liang Qiushuang, Huang Xinlu, Zhang Lanfang, Yang Haiyan
Chongqing Telecommunications Polytechnic College, Chongqing 402247, China.
School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Materials (Basel). 2024 Oct 17;17(20):5065. doi: 10.3390/ma17205065.
China is the largest producer and user of Ordinary Silicate Cement (OPC), and rapid infrastructure development requires more sustainable building materials for concrete structures. Portland cement emits large amounts of CO in production. Given proposals for "carbon peaking and carbon neutralization", it is extremely important to study alternative low-carbon cementitious materials to reduce emissions. Alkali-activated slag (AAS) cement, a new green cementitious material, has high application potential. The chemical corrosion resistance of AAS concrete is important for ensuring durability and prolonging service life. This paper reviews the hydration mechanism of AAS concrete and discusses the composition of hydration products on this basis, examines the corrosion mechanism of AAS concrete in acid, sulfate, and seawater environments, and reviews the impact of its performance due to the corrosion of AAS concrete in different solutions. Further in-depth understanding of its impact on the performance of concrete can provide an important theoretical basis for its use in different environments and provides an important theoretical basis for the application of AAS concrete, so that we can have a certain understanding of the durability of AAS concrete.
中国是普通硅酸盐水泥（OPC）的最大生产国和使用国，快速的基础设施发展需要更可持续的混凝土结构建筑材料。波特兰水泥在生产过程中会排放大量二氧化碳。鉴于“碳达峰和碳中和”的提议，研究替代低碳胶凝材料以减少排放极为重要。碱激发矿渣（AAS）水泥作为一种新型绿色胶凝材料，具有很高的应用潜力。AAS混凝土的抗化学腐蚀性能对于确保耐久性和延长使用寿命至关重要。本文综述了AAS混凝土的水化机理，并在此基础上讨论了水化产物的组成，研究了AAS混凝土在酸、硫酸盐和海水环境中的腐蚀机理，综述了不同溶液对AAS混凝土腐蚀后其性能的影响。进一步深入了解其对混凝土性能的影响可为其在不同环境中的使用提供重要的理论依据，为AAS混凝土的应用提供重要的理论基础，从而使我们对AAS混凝土的耐久性有一定的认识。
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