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A review on reflective materials for cementitious composites
Journal of Building Engineering ( IF 6.7 ) Pub Date : 2025-01-21 , DOI: 10.1016/j.jobe.2025.111877
Yifan Zhang, Farhad Aslani, Arcady Dyskin, Elena Pasternak

The urban heat island (UHI) effect significantly impacts urban environments, driving the need for innovative cooling strategies. Reflective cementitious composites, with their potential to reduce solar heat absorption, offer a promising approach to mitigating UHI effects. This review explores factors influencing the reflectance of cementitious composites, including aggregate types, supplementary cementitious materials (e.g., slag, fly ash), water-to-cement ratios, curing conditions, and environmental exposure. Additionally, the incorporation of reflective fillers such as TiO2, CaCO3, and waste glass, as well as advanced coatings using white pigments (e.g., TiO2, ZnO) and colourful pigments (e.g., Cr, Fe, Co), is examined. Emerging technologies like thermochromic materials, fluorescent quantum dots, and retroreflective additives are evaluated for their potential to enhance reflectance and durability. The review highlights that combining advanced reflective materials with optimised cementitious designs can achieve significant temperature reductions, offering a sustainable solution to mitigate UHI effects and improve urban thermal comfort.

中文翻译:


水泥基复合材料用反光材料研究进展



城市热岛效应 (UHI) 对城市环境产生重大影响,推动了对创新冷却策略的需求。反射水泥基复合材料具有减少太阳热吸收的潜力,为减轻 UHI 效应提供了一种很有前途的方法。本文探讨了影响胶凝复合材料反射率的因素,包括骨料类型、补充胶凝材料(例如矿渣、粉煤灰)、水灰比、固化条件和环境暴露。此外,还检查了 TiO2、CaCO3 和废玻璃等反光填料的掺入,以及使用白色颜料(如 TiO2、ZnO)和彩色颜料(如 Cr、Fe、Co)的先进涂层。热致变色材料、荧光量子点和逆向反射添加剂等新兴技术评估了它们提高反射率和耐用性的潜力。该评论强调,将先进的反光材料与优化的水泥基设计相结合可以显著降低温度,为减轻 UHI 影响和提高城市热舒适度提供可持续的解决方案。
更新日期:2025-01-21
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