Fog seal with polymer composite modified emulsified asphalt: Road performance and environmental adaptability

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL Wear Pub Date : 2024-11-26 DOI:10.1016/j.wear.2024.205672

Zhentong Fan , Chaohui Wang , Zhibin Wang , Yanwei Li , Lei Feng , Songyuan Tan

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Abstract

Three types of fog seals with polymer modified-emulsified asphalt were prepared to improve the durability of the fog seal and the maintenance quality of asphalt. Based on the skid resistance, water seepage, and wet wheel abrasion, the spraying scheme of the fog seal was determined. The variation of surface drying time under different temperatures and humidity was clarified. The road performance evolution law of fog seal under composite conditions and long-term abrasion was revealed, respectively. The results show that the optimal spraying amount of modified emulsified asphalt for three types of fog seals was 0.6 kg/m². The optimal dosage of fine sand for fog seals with waterborne epoxy/polyurethane modified-emulsified asphalt (WER-WPU-JFC-EA) and waterborne epoxy/polyurethane/styrene-butadiene rubber-modified emulsified asphalt (WER-WPU-SBR-EA) was 0.6 kg/m² and 0.4 kg/m², respectively. Under average temperature and humidity, the traffic open time of the fog seal was 1.0–1.5 h. After the long-term action of thermal-oxygen/freeze-thaw and climate/freeze-thaw, the bonding strength of WER-WPU-JFC-EA and WER-WPU-SBR-EA fog seal was still greater than 0.34 MPa. After 50,000 times of wear, the mass loss of WER-WPU-JFC-EA and WER-WPU-SBR-EA fog seal was below 5.2 %, maintaining good skid resistance and waterproof performance.

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聚合物复合改性乳化沥青雾封：路用性能和环境适应性

为提高雾封的耐久性和沥青的养护质量，采用聚合物改性乳化沥青制备了3种不同类型的雾封。基于抗滑性、渗水性和湿轮磨损性，确定了雾密封的喷涂方案。阐明了不同温度和湿度下表面干燥时间的变化规律。揭示了复合工况和长期磨损工况下雾密封的路用性能演化规律。结果表明：改性乳化沥青对3种雾封的最佳喷施量为0.6 kg/m2；水性环氧/聚氨酯改性乳化沥青（WER-WPU-JFC-EA）和水性环氧/聚氨酯/苯乙烯-丁二烯橡胶改性乳化沥青（WER-WPU-SBR-EA）雾封的最佳细砂用量分别为0.6 kg/m2和0.4 kg/m2。在平均温湿度条件下，雾封的通行开启时间为1.0 ~ 1.5 h，经过热氧/冻融和气候/冻融的长期作用后，WER-WPU-JFC-EA和WER-WPU-SBR-EA雾封的结合强度仍大于0.34 MPa。经过5万次的磨损，WER-WPU-JFC-EA和WER-WPU-SBR-EA雾封的质量损失在5.2%以下，保持了良好的防滑和防水性能。

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.