不同抗剥离剂对沥青流变性能的影响

IF 2.9 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Coatings Pub Date : 2022-12-05 DOI:10.3390/coatings12121895
Shiqi Shu, C. Zhuang, Ruibo Ren, Baodong Xing, Kun Chen, Gen Li
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引用次数: 2

摘要

水毁是公路沥青路面早期损坏的主要形式之一,严重影响沥青路面的使用性能。为了解决沥青路面早期水损害的问题,在沥青中添加抗剥离剂是一种有效的技术手段。为了进一步分析防剥离剂对沥青性能的影响,选择青川岩沥青、酰化胺防剥离剂、脂肪胺防剥离器、岩沥青+酰化胺抗剥离器和岩沥青+脂肪胺防剥器对基础沥青进行改性。采用动态剪切流变仪和弯曲梁流变仪对改性沥青的流变性能进行了测试。结合Sigmoidal、Burgers、粘弹性连续损伤模型(VECD)等数学模型拟合试验结果,通过模型参数评价了不同抗剥离剂对沥青流变性能的影响。结果表明,青川岩沥青在较宽的频域范围内提高了沥青的高温抗变形能力和抗变形能力,但增加了沥青低温开裂的风险。Acamine抗剥离剂和脂肪族胺抗剥离剂在高温下降低了沥青在宽频域下的弹性恢复能力和抗变形能力,但在低温下增强了沥青的柔性变形和延展性。复合抗剥离剂不仅提高了沥青的耐高温变形性能,而且改善了岩石沥青低温性能的不足,有效地提高了其性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Different Anti-Stripping Agents on the Rheological Properties of Asphalt
Water damage is one of the main forms of early damage of highway asphalt pavement, which seriously affects the service performance of asphalt pavement. To address the problem of early water damage of asphalt pavement, the addition of anti-stripping agents in asphalt is an effective technical means. To further analyze the influence of anti-stripping agents on asphalt performance, Qingchuan rock asphalt, acylamine anti-stripping agent, fatty amine anti-stripping agent, rock asphalt + acylamine anti-stripping agent and rock asphalt + fatty amine anti-stripping agent were selected to modify the base asphalt. The rheological properties of modified asphalt were tested using a dynamic shear rheometer and bending beam rheometer. Combined with the mathematical-model-fitting test results of Sigmoidal, Burgers, viscoelastic continuum damage model (VECD), etc., the effects of different anti-stripping agents on the rheological properties of asphalt were evaluated through model parameters. The results showed that the Qingchuan rock asphalt could improve the high-temperature resistance to deformation of asphalt and improved the resistance to deformation of asphalt in a wide frequency domain but increased the risk of low-temperature cracking of asphalt. Acylamine anti-stripping agents and aliphatic amine anti-stripping agents reduced the elastic recovery ability and deformation resistance under a wide frequency domain of asphalt at high temperatures but enhanced the flexible deformation and ductility of asphalt at low temperatures. The compound anti-stripping agent not only improved the high-temperature deformation resistance of asphalt, but also improved the deficiency of rock asphalt’s low-temperature performance and effectively enhanced its performance.
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来源期刊
Coatings
Coatings Materials Science-Surfaces, Coatings and Films
CiteScore
5.00
自引率
11.80%
发文量
1657
审稿时长
1.4 months
期刊介绍: Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material
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