Long-term performance of porous asphalt pavement incorporating recycled plastics

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Resources Conservation and Recycling Pub Date : 2024-10-17 DOI:10.1016/j.resconrec.2024.107979

Gengren Hao , Sin Mei Lim , Meibo He , Ghim Ping Ong , Anggraini Zulkati , Sothinathan Kapilan , Jia Hao Tan

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Abstract

Recycling plastic in asphalt pavement holds potential for environmental and economic benefits. However, its performance after prolonged exposure to heat, oxygen, sunlight, and moisture remains uncertain, casting doubt on its viability. In this study, various types of recycled plastics were incorporated into porous asphalt mixtures and exposed to long-term aging conditions. A total of 360 specimens were tested to evaluate several key properties: moisture susceptibility and rutting resistance; abrasion resistance; and indirect tensile strength and fatigue resistance. The results indicate that porous mixtures with 5 % plastic generally exhibit superior long-term performance compared to non-plastic porous mixtures, except for cracking resistance. Excessive addition of plastic (15 %) in asphalt pavement can lead to significant degradation of long-term performance. A trial section incorporating plastic in porous asphalt pavement exhibited satisfactory performance after a year of construction. These insights are pivotal in shaping policy and directing resources toward sustainable road construction practices.

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含有再生塑料的多孔沥青路面的长期性能

在沥青路面中回收塑料有可能带来环境和经济效益。然而，塑料在长期暴露于高温、氧气、阳光和潮湿条件下的性能仍不确定，这使人们对其可行性产生怀疑。在这项研究中，各种类型的回收塑料被掺入多孔沥青混合料中，并暴露在长期老化条件下。共对 360 个试样进行了测试，以评估几个关键特性：湿度敏感性和抗车辙能力；耐磨性；间接拉伸强度和抗疲劳性。结果表明，与非塑料多孔混合物相比，塑料含量为 5% 的多孔混合物通常具有更优越的长期性能，但抗裂性能除外。在沥青路面中添加过多塑料（15%）会导致长期性能显著下降。在多孔沥青路面中加入塑料的试验段在施工一年后表现出令人满意的性能。这些见解对于制定政策和将资源用于可持续道路建设实践至关重要。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.