Kim Joo-Young, Ryou Jae-Suk
HL Halla Corporation, 81, Pulmugol-ro, Paju-si 10849, Republic of Korea.
Civil and Environmental Engineering Department, Hanyang University, Jaesung Civil Engineering Building, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
Materials (Basel). 2025 Jul 23;18(15):3444. doi: 10.3390/ma18153444.
In this study, the thermal effectiveness of thermally conductive concrete pavements (TCPs) using silicon carbide (SiC) as a fine aggregate replacement was investigated, compared with that of ordinary Portland cement pavements (OPCPs). The most important purpose of this study is to improve the thermal performance of concrete pavement. Additionally, this study utilized improved thermal properties to enhance the efficiency of pavement heating to prevent icing and snow stacking. Both mixtures met the Korean standards for air content (4.5-6%) and slump (80-150 mm), demonstrating adequate workability. TCP exhibited a higher mechanical performance, with average compressive and flexural strengths of 42.88 MPa and 7.35 MPa, respectively, exceeding the required targets of a 30 MPa compressive strength and a 4.5 MPa flexural strength. The improved strength was mainly attributed to the filler effect and partly due to the van der Waals interactions of the SiC particles. Thermal conductivity tests showed a significant improvement in the TCP (3.20 W/mK), which was approximately twice that of OPCP (1.59 W/mK), indicating an enhanced heat transfer efficiency. In winter field tests, TCP effectively maintained high surface temperatures, overcoming heat loss and outperforming the OPCP. In the site experiment, thermal efficiency was clearly shown in the temperature at the center of the TCP, which was 3.5 °C higher than at the center of the OPCP at the coldest time. These improvements suggest that SiC-reinforced concrete pavements can be practically utilized for effective snow removal and ice mitigation in road systems.
在本研究中，对使用碳化硅（SiC）替代细集料的导热混凝土路面（TCP）的热效能进行了研究，并与普通硅酸盐水泥路面（OPCP）进行了比较。本研究的最重要目的是提高混凝土路面的热性能。此外，本研究利用改善后的热性能来提高路面加热效率，以防止结冰和积雪。两种混合料均符合韩国关于含气量（4.5 - 6%）和坍落度（80 - 150毫米）的标准，表明工作性能良好。TCP表现出更高的力学性能，平均抗压强度和抗弯强度分别为42.88兆帕和7.35兆帕，超过了30兆帕抗压强度和4.5兆帕抗弯强度的要求目标。强度的提高主要归因于填充效应，部分原因是SiC颗粒的范德华相互作用。导热系数测试表明，TCP的导热系数有显著提高（3.20瓦/米·开尔文），约为OPCP（1.59瓦/米·开尔文）的两倍，表明传热效率提高。在冬季现场测试中，TCP有效地保持了较高的表面温度，克服了热损失，表现优于OPCP。在现场试验中，TCP中心温度明显显示出热效率，在最冷的时候，TCP中心温度比OPCP中心温度高3.5℃。这些改进表明，SiC增强混凝土路面可实际用于道路系统中有效的除雪和防冰。
