This study used PCM/SiC-based composite aggregates made using slag aggregate, paraffin wax, and silicon carbide. Concrete samples were prepared by replacing natural coarse aggregates with PCM/SiC-based composite aggregates at various replacement ratios. Compressive strength tests, Fourier-transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy-energy dispersive microscopy analysis were carried out to investigate the mechanical, physical, and microstructural properties of concrete samples. The results reveal that physical properties of the concrete samples made with PCM/SiC-based composite aggregate were less desirable than those made without PCM/SiC-based composite aggregates. However, the targeted designed strength was not compromised with the addition of PCM/SiC-based composite aggregate. The results of microstructural analyses confirmed the presence of various hydration products, paraffin wax, and SiC particles in the cement composites.

该研究使用了由矿渣骨料，石蜡和碳化硅制成的基于PCM / SiC的复合骨料。通过以各种替换比例将天然粗骨料替换为基于PCM / SiC的复合骨料来制备混凝土样品。进行了抗压强度测试，傅立叶变换红外光谱，热重分析，X射线衍射和扫描电子显微镜-能量分散显微镜分析，以研究混凝土样品的机械，物理和微观结构特性。结果表明，与不使用PCM / SiC基复合骨料制备的混凝土样品相比，使用PCM / SiC基复合骨料制备的混凝土样品的物理性能较差。但是，目标设计强度并未因添加PCM / SiC基复合骨料而受到损害。