Using recycled plastic waste to improve the performance of hot-mix asphalt

IF 0.8 Q4 ENGINEERING, ENVIRONMENTAL

Proceedings of the Institution of Civil Engineers-Waste and Resource Management Pub Date : 2022-03-17 DOI:10.1680/jwarm.21.00013

A. Al-Shawabkeh, Mohammad Owad Thalji, Taleb M. Al-Rousan

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引用次数: 3

Abstract

The use of recycled plastics in asphalt mixtures has become a major interest for the pavement and plastics industries due to the potential environmental benefits. An investigation was carried out into the use of three recycled plastic waste materials to modify asphalt binders and influence the performance of the resulting hot-mix asphalt. Asphalt binders were modified with three different types of recycled plastics: high-density polyethylene, low-density polyethylene and polypropylene. Marshall stability and flow were determined for 12 control mixtures using unmodified binders and 72 mixtures modified by different percentages of recycled plastic. Results revealed that, in general, recycled plastic enhanced the stability of hot-mix asphalt. Both recycled high-density polyethylene and polypropylene resulted in higher mixture stability than low-density polyethylene. Optimum stability for all recycled plastic types was achieved at 8% plastic content by weight of asphalt. Mixes with 8% high-density polyethylene increased stability over the unmodified mixture by almost 17% and reduced flow by 7%. This type of plastic waste also had the highest Marshal quotient value, which suggests a better performance than the other two.

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利用再生塑料废弃物改善热拌沥青的性能

由于潜在的环境效益，在沥青混合料中使用再生塑料已成为路面和塑料工业的主要兴趣。研究了三种再生塑料废弃物对沥青粘结剂的改性及其对热混合沥青性能的影响。沥青粘合剂用三种不同类型的再生塑料进行改性:高密度聚乙烯、低密度聚乙烯和聚丙烯。测定了12种未改性的对照混合物和72种不同比例的再生塑料改性混合物的马歇尔稳定性和流动性。结果表明，一般来说，再生塑料增强了热拌沥青的稳定性。再生高密度聚乙烯和聚丙烯的混合稳定性都高于低密度聚乙烯。所有再生塑料类型的最佳稳定性达到了8%的沥青重量塑料含量。与未经改性的混合物相比，含有8%高密度聚乙烯的混合物的稳定性提高了近17%，流动减少了7%。这种类型的塑料垃圾也具有最高的马歇尔商值，这表明性能优于其他两种。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Civil Engineers-Waste and Resource Management ENGINEERING, ENVIRONMENTAL-

CiteScore

1.70

自引率

14.30%

发文量

期刊介绍： Waste and Resource Management publishes original research and practice papers on all civil engineering and construction related aspects of the resource management cycle, from the minimization of waste, through the re-use and recycling, to the management and disposal of residual wastes. Associated legislation, standards, socio-economic considerations and links with sustainable consumption and production are included. The range of subjects covered encompasses, but is not restricted to, strategies for reducing construction waste through better design, improved recovery and re-use, more efficient resource management, the performance of materials recovered from wastes, and, the procurement, planning, design, construction, operation and logistics of waste and resource management facilities.