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| 1 | Review of ice-pavement adhesion study and development of hydrophobic surface in pavement deicing显示文摘Ice adhesion to materials is a significant concern in many fields. Hydrophobic surface has been used for anti-icing in fields of aircraft or transmission line, which prove to be efficacious and economical. However, such technique is seldom employed for road deicing,because of the texture and service environment of pavement. Instead, deicers such as rock salt are frequently used, which leads to serious corrosion problem of roads and bridges. In this paper, a number of studies that characterize mechanism of ice adhesion to common substrates, specifically to pavement, are reviewed. The most important researches undertaken on ice adhesion strength affecting factors are presented. An overview of studies carried out to find hydrophobic surface for asphalt and cement concrete pavement antiicing are presented. It was verified that the hydrophobicity had high correlation with icephobicity, and nano-engineered asphalt and cement concrete pavement surface exhibited favorable hydrophobicity, and also had good performance on weakening pavement-ice bonding. However, most ice-repelling pavements obtain hydrophobic surface via low surface energy coating, which could not exist on pavement for a long time under wheel abrasion. And the nano/micro structures on hydrophobic surfaces are also vulnerable and consumable. Thus, the long-term effect of hydrophobic surface still need to be improved,and durability of the hydrophobic surface should be the research and development priorities of ice-repelling pavement. | Huaxin Chen Yongchang Wu Huiyun Xia Bingyin Jing Qingjiang Zhang | 2018 | Journal of Traffic and Transportation Engineering(English Edition)2018，5，3： | 9 |
| 2 | 硫酸盐侵蚀作用下纳米混凝土力学特性及微观结构劣化机制研究显示文摘硫酸盐侵蚀一直是影响混凝土耐久性的重要因素之一,特别是在西北寒旱及沿海盐渍土区。基于试验研究了硫酸盐侵蚀作用下,掺纳米SiO_(2)和纳米CuO混凝土的抗压强度、轴向应力-应变以及微观特性,并分析了硫酸盐侵蚀环境下纳米材料的改性效果。试验结果表明:随着纳米CuO掺量的提高,混凝土的抗压强度、剩余强度系数逐渐降低;当纳米SiO_(2)掺量增加时,混凝土的抗压强度、剩余强度系数先降低后升高。相比于未掺加纳米材料混凝土,掺入纳米材料能显著提高混凝土的延性。同时,对于提高混凝土的抗压强度纳米材料具有最佳掺入量,纳米SiO_(2)和纳米CuO的最佳掺量分别为3%和1%(质量分数)。此外,纳米材料具有桥接和填充效应,能抑制混凝土裂缝的发展、细化孔隙结构、提高密实度,进而提高混凝土的力学性能。 | 张嘉成 万旭升 路建国 高佳佳 刘骏霓 周晓曼 | 2023 | 防灾减灾工程学报2023，43，6： | 0 |
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