Study on the Road Performance and Compaction Characteristics of Fiber-Reinforced High-RAP Plant-Mixed Hot Recycled Asphalt Mixtures

被引:1
|
作者
Zhu, Chunfeng [1 ]
Yang, Yongyong [1 ]
Zhang, Kai [2 ]
Yu, Di [2 ,3 ]
机构
[1] Jilin Jianzhu Univ, Coll Civil Engn, Changchun 130118, Peoples R China
[2] Jiangxi Transportat Inst Co Ltd, Nanchang 330200, Peoples R China
[3] East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330013, Peoples R China
关键词
recycled asphalt mixture; basalt fiber; polyester fiber; road performance; compaction characteristics; RHEOLOGICAL PROPERTIES; PAVEMENT; IMPACT;
D O I
10.3390/polym16142016
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Recycled asphalt pavement (RAP) mixtures are widely adopted due to their significant economic and social benefits from utilizing pavement recycling materials. This study incorporates basalt fibers (BF) and polyester fibers (PF) into plant-mixed hot recycled asphalt mixtures to analyze their enhancement effects on the high-temperature, low-temperature, and fatigue performance at different RAP content levels. Additionally, the study investigates the impact of fiber and RAP additions on the compaction characteristics of the mixtures using gyratory compaction tests, aiming to increase the RAP content of plant-mixed hot recycled asphalt mixtures. Experimental results demonstrate that at 30% and 50% RAP content levels, basalt fibers exhibit more pronounced enhancement effects on the performance of recycled asphalt mixtures compared to polyester fibers. Incorporating basalt fibers increases the fracture energy of recycled asphalt mixtures by 8.63% and 13.9%, and improves fatigue life by 154% and 135%, respectively. Moreover, the addition of both types of fibers increases compaction difficulty, with polyester fibers showing a more significant influence on the compaction energy index (CEI).
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页数:15
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