High-Temperature Performance of Recycled Low-Density Polyethylene-Modified Asphalt Binder Reinforced with Thermally Treated Polyacrylonitrile Fiber

M. A. Dalhat; Khaleel Al-Adham; Akeem Y. Adesina

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High-Temperature Performance of Recycled Low-Density Polyethylene-Modified Asphalt Binder Reinforced with Thermally Treated Polyacrylonitrile Fiber

机译：热处理聚丙烯腈纤维增强的再生低密度聚乙烯改性沥青粘结剂的高温性能

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摘要

Global shift toward green construction has resulted in an increased focus on the use of recycled plastic waste for asphaltbinder modification. However, there are some performance issues still associated with the recycled plastic-modified binder.In this study, the viscoelastic behavior of recycled low-density polyethylene (LDPE)-modified asphalt binder reinforced withthermally treated polyacrylonitrile (PAN) fiber was investigated. The duration of the fiber thermal treatment was optimizedat 220 ℃, based on asphalt viscoelastic performance, SEM image analysis of fiber surface morphology, and fiber molecularstructural change via X-ray diffraction technique. Two sets of PAN fiber-reinforced LDPE asphalts were studied: the thermallytreated fiber-reinforced LDPE-modified asphalt and untreated fiber-reinforced LDPE-modified binders. Enhanced and exposedfiber surface, in addition to a molecular structural shift toward aromatic form, improves compatibility between the thermallytreated PAN fiber and the base asphalt binder. This results in an improved high- and intermediate-temperature performance ofthe LDPE-modified asphalt binder reinforced with thermally treated fiber, relative to the LDPE-modified asphalt reinforcedwith untreated fiber.

机译：全球向绿色建筑的转变已导致越来越多地将再生塑料废料用于沥青结合料改性。然而，再生塑料改性粘合剂仍然存在一些性能问题。在本研究中，研究了用热处理聚丙烯腈（PAN）纤维增强的再生低密度聚乙烯（LDPE）改性沥青粘合剂的粘弹性行为。基于沥青的粘弹性能，纤维表面形态的SEM图像分析和X射线衍射技术对纤维分子结构的改变，对纤维的热处理时间进行了优化，使其达到220℃。研究了两组PAN纤维增强LDPE沥青：热处理的纤维增强LDPE改性沥青和未处理的纤维增强LDPE改性粘合剂。除了向芳族形式的分子结构转变之外，增强的和暴露的纤维表面还改善了热处理PAN纤维和基础沥青粘合剂之间的相容性。相对于用未经处理的纤维增强的LDPE改性的沥青，这导致了用热处理的纤维增强的LDPE改性的沥青粘合剂的高温和中温性能的改善。

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来源
《Arabian Journal for Science and Engineering》 |2020年第5期|4257-4272|共16页
作者
M. A. Dalhat; Khaleel Al-Adham; Akeem Y. Adesina;
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作者单位

Transportation and Traffic Engineering Department College of Engineering Imam Abdulrahman Bin Faisal University PO Box 1982 Dammam 31451 Saudi Arabia;

Civil and Environmental Engineering Department King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi;

Arabia Center of Excellence Research in Corrosion King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia;

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Polyacrylonitrile fibers; Recycled polyethylene; MSCR; Viscoelastic performance; Modified asphalts; Thermal treatment; Optimization;

机译：聚丙烯腈纤维;再生聚乙烯MSCR;粘弹性改性沥青;热处理;优化;

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1. Multiple Stress-Creep-Recovery Behavior and High-Temperature Performance of Styrene Butadiene Styrene and Polyacrylonitrile Fiber-Modified Asphalt Binders [J] . Dalhat M. A., Al-Adham Khaleel, Wahhab H. I. Al-Abdul Journal of materials in civil engineering . 2019,第6期

机译：苯乙烯-丁二烯-苯乙烯和聚丙烯腈纤维改性沥青粘合剂的多次应力-蠕变回复行为和高温性能
2. Multiple Stress-Creep-Recovery Behavior and High-Temperature Performance of Styrene Butadiene Styrene and Polyacrylonitrile Fiber-Modified Asphalt Binders [J] . Dalhat M. A., Al-Adham Khaleel, Wahhab H. I. Al-Abdul Journal of materials in civil engineering . 2019,第6期

机译：苯乙烯丁二烯苯乙烯和聚丙烯腈纤维改性沥青粘合剂多重应力蠕变恢复行为和高温性能
3. Effect of cross-linkers on the performance of polyethylene-modified asphalt binders [J] . Fereidoon Moghadas Nejad, Koorosh Naderi, Roozbeh Zarroodi Construction materisls . 2017,第cm4期

机译：交联剂对聚乙烯改性沥青粘合剂性能的影响
4. Grey relational evaluation on performance and mechanism of polyacrylonitrile fiber reinforced asphalt mixture [C] . Z H Lyu, A Q Shen, D S Li International Conference on New Material and Chemical Industry . 2019

机译：聚丙烯腈纤维增强沥青混合料的性能和机理灰色关系评价
5. Influence of Recycled Asphalt Shingles on Asphalt Binder Content, Mixture Stiffness, and Laboratory Rutting Performance. [D] . King, Joshua David. 2011

机译：再生沥青瓦对沥青粘结剂含量，混合料刚度和实验室车辙性能的影响。
6. Influence of Binder Property and Mortar Thickness on High-Temperature Performance of Cold Recycled Mixtures with Asphalt Emulsion [O] . Lei Gao, Zhanqi Wang, Yanping Liu, 2019

机译：粘结剂性能和砂浆厚度对沥青乳液冷再生混合料高温性能的影响
7. Stone Matrix Asphalt (SMA) is a gap-graded mix that is gaining popularity worldwide. Generally, gap graded mixes are thought to be weak in fatigue resistance. In this study, cellulose fibers were pre-blended in PG64-22 binder with fiber proportions of 0.2%, 0.4%, 0.6%, 0.8% and 1.0% by weight of aggregates. The fiber-modified binder showed improved rheological properties and showed that the PG64-22 binder can be modified and raised to PG70-22 grade. The cellulose oil palm fiber (COPF) was found to improve the diameteral fatigue performance of SMA design mix. The fatigue life increased to a maximum at a fiber content of about 0.6%, whilst the tensile stress and stiffness also showed a similar trend in performance. The initial strains of the mix were lowest at a fiber content of 0.6%. [O] . Ratnasamy Muniandy, Bujang B.K. Huat 2006

机译：石基沥青（SMA）是一种间隙分级的混合物，在全球范围内越来越受欢迎。通常，间隙梯度混合料被认为抗疲劳性较弱。在这项研究中，将纤维素纤维预先掺入PG64-22粘合剂中，纤维比例为集料重量的0.2％，0.4％，0.6％，0.8％和1.0％。纤维改性的粘合剂表现出改善的流变性能，并表明PG64-22粘合剂可以被改性并提高到PG70-22级。发现纤维素油棕纤维（COPF）可以改善SMA设计混合物的直径疲劳性能。在约0.6％的纤维含量下，疲劳寿命增加到最大值，而拉伸应力和刚度也表现出相似的性能趋势。混合物的初始应变在纤维含量为0.6％时最低。
8. Impact of Recycled Asphalt Shingles (RAS) on Asphalt Binder Performance, Summary. [R] . Roque, R. 2018

机译：再生沥青瓦（Ras）对沥青结合料性能的影响，综述。

High-Temperature Performance of Recycled Low-Density Polyethylene-Modified Asphalt Binder Reinforced with Thermally Treated Polyacrylonitrile Fiber

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