Effect of carbonation curing on the characterization and properties of steel slag-based cementitious materials

IF 10.8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Cement & concrete composites Pub Date : 2024-09-21 DOI:10.1016/j.cemconcomp.2024.105769

Xinyue Liu , Xiaoming Liu , Zengqi Zhang , Xianbin Ai

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Abstract

Steel slag (SS)-based cementitious materials usually exhibit poor bulk stability, poor early activity and low mechanical strength, which greatly limits the consumption of SS in construction materials. Carbonation curing can not only control volume expansion but also improve the mechanical properties and durability of SS-based cementitious materials. First, the physicochemical properties of the SS were summarized. Then, the reaction mechanism of carbonation curing was analyzed. Next, the mineral composition, microstructure, morphology and CO₂ uptake of the SS-based materials during carbonation curing were discussed, and the effects of carbonation curing on the mechanical properties, volume stability and durability of the SS-based materials were investigated. Finally, some suggestions for the application of carbonation curing in SS-based materials were given. The development and application of carbonation curing in SS-based materials can achieve the large-scale utilization of SS in cementitious materials and the effective reduction of CO₂ emissions.

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碳化固化对钢渣基胶凝材料特性和性能的影响

钢渣（SS）基胶凝材料通常表现出体积稳定性差、早期活性差和机械强度低等问题，这极大地限制了 SS 在建筑材料中的应用。碳化固化不仅能控制体积膨胀，还能改善 SS 基胶凝材料的力学性能和耐久性。首先，总结了 SS 的物理化学特性。然后，分析了碳化固化的反应机理。接着，讨论了碳化固化过程中 SS 基材料的矿物组成、微观结构、形态和二氧化碳吸收情况，并研究了碳化固化对 SS 基材料的力学性能、体积稳定性和耐久性的影响。最后，对碳化固化在 SS 基材料中的应用提出了一些建议。碳化固化技术在 SS 基材料中的开发和应用可实现 SS 在胶凝材料中的大规模利用，并有效减少 CO2 排放。

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来源期刊

Cement & concrete composites 工程技术-材料科学：复合

CiteScore

18.70

自引率

11.40%

发文量

459

审稿时长

65 days

期刊介绍： Cement & concrete composites focuses on advancements in cement-concrete composite technology and the production, use, and performance of cement-based construction materials. It covers a wide range of materials, including fiber-reinforced composites, polymer composites, ferrocement, and those incorporating special aggregates or waste materials. Major themes include microstructure, material properties, testing, durability, mechanics, modeling, design, fabrication, and practical applications. The journal welcomes papers on structural behavior, field studies, repair and maintenance, serviceability, and sustainability. It aims to enhance understanding, provide a platform for unconventional materials, promote low-cost energy-saving materials, and bridge the gap between materials science, engineering, and construction. Special issues on emerging topics are also published to encourage collaboration between materials scientists, engineers, designers, and fabricators.