Performance optimization of novel wear-resistant reflective cooling coatings for asphalt pavement

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Construction and Building Materials Pub Date : 2024-11-16 DOI:10.1016/j.conbuildmat.2024.139207

Wei Si , Qiutai Gu , Yike Yin , Xiangyu Luo , Moxuan Xia , Xin Li , Maoning Zhong , Yongping Hu

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Abstract

To enhance the wear resistance of traditional asphalt pavement reflective coatings and extend their cooling effect, this study employed Potassium Hexatitanate Whiskers (PHW) as a functional material to manufacture pavement reflective coatings. It was found that PHW exhibited excellent wear resistance though agglomeration resulted in adverse effects. Therefore, untreated PHW (U-PHW) underwent inorganic-organic surface modification to produce modified PHW (M-PHW). The results indicated that M-PHW exhibited excellent optical properties, with a reflectance of 78.9 %. M-PHW exhibited more uniform dispersion in the resin matrix, which significantly enhanced the coating reflectivity. Moreover, the interfacial bonding strength between M-PHW and the resin matrix was significantly improved, enhancing the wear resistance of the coating. Especially with a whisker content of 16 units, the tensile strength of the M-PHW coating reached 96.20 MPa, representing a 43.0 % increase compared to the U-PHW coating, while achieving a maximum outdoor cooling value of 5.6 °C.

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新型沥青路面耐磨反射冷却涂层的性能优化

为了提高传统沥青路面反光涂层的耐磨性并延长其冷却效果，本研究采用六钛酸钾晶须（PHW）作为功能材料来制造路面反光涂层。研究发现，PHW 具有优异的耐磨性，但结块会带来不利影响。因此，对未经处理的 PHW（U-PHW）进行了无机-有机表面改性，制成了改性 PHW（M-PHW）。结果表明，M-PHW 具有优异的光学特性，反射率高达 78.9%。M-PHW 在树脂基体中的分散更加均匀，从而显著提高了涂层的反射率。此外，M-PHW 与树脂基体之间的界面结合强度也得到了显著提高，从而增强了涂层的耐磨性。特别是在晶须含量为 16 个单位时，M-PHW 涂层的拉伸强度达到 96.20 兆帕，与 U-PHW 涂层相比提高了 43.0%，同时室外最大冷却值达到 5.6 °C。

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.