Characterization of rutting resistance of warm-modified asphalt mixtures tested in a dynamic shear rheometer

IF 1.7 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of the Mechanical Behavior of Materials Pub Date : 2023-01-01 DOI:10.1515/jmbm-2022-0277

D. Abd, T. Ahmed, Thamer Y. Ahmed

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引用次数: 1

Abstract

Abstract The current study aims to evaluate the rutting resistance of warm miox asphalt (WMA) taking into consideration the influence of production temperature. Rediset WMX, Sasobit, and Rediset LQ were used to manufacture WMAs. WMA was manufactured at 125°C (for a modified soft binder, 100/150) and 135 and 145°C (for a modified hard binder, 40/60), while the control hot mix asphalt (HMA) was manufactured at 145 and 155°C for soft and hard binder, respectively. Although WMAs manufactured using hard binder (40/60) were successfully produced at a temperature 20°C lower than that for the control HMA, its rutting performance was inferior to that of the control HMA with both Rediset LQ and Rediset WMX; while the rutting performance of the Sasobit-modified hard binder–asphalt mixture was equal to that of HMA because Sasobit increases the stiffness of binder. On the other hand, all WMAs produced at a temperature of 145°C performed better than or equal to HMA. In summary, binder grade has an important role in the dosage of additive, performance, and the reduction of the manufacturing temperature of WMA; on the other hand, WMA additives delay the degradation of rutting rate for mixes, the results also showed that WMAs have an equal performance to or better performance than that of conventional HMA.

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热改性沥青混合料抗车辙性能的动态剪切流变仪试验

摘要本研究旨在评估温拌沥青(WMA)在考虑生产温度影响下的抗车辙性能。使用Rediset WMX、Sasobit和Rediset LQ制造wma。WMA在125°C(改性软粘结剂，100/150)和135°C和145°C(改性硬粘结剂，40/60)下制造，而对照热混合沥青(HMA)分别在145°C和155°C(软粘结剂和硬粘结剂)下制造。虽然使用硬粘结剂(40/60)制备的wma在比对照HMA低20℃的温度下成功生产，但其车辙性能不如使用Rediset LQ和Rediset WMX的对照HMA;而Sasobit改性硬粘结剂-沥青混合料的车辙性能与HMA相当，因为Sasobit增加了粘结剂的刚度。另一方面，在145°C温度下产生的所有wma的性能都优于或等于HMA。综上所述，粘结剂等级对WMA的添加剂用量、性能和制造温度的降低有重要作用;另一方面，WMA添加剂延缓了混合料车辙率的退化，结果也表明WMA具有与常规HMA相当或更好的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Mechanical Behavior of Materials Materials Science-Materials Science (miscellaneous)

CiteScore

3.00

自引率

11.10%

发文量

审稿时长

30 weeks

期刊介绍： The journal focuses on the micromechanics and nanomechanics of materials, the relationship between structure and mechanical properties, material instabilities and fracture, as well as size effects and length/time scale transitions. Articles on cutting edge theory, simulations and experiments – used as tools for revealing novel material properties and designing new devices for structural, thermo-chemo-mechanical, and opto-electro-mechanical applications – are encouraged. Synthesis/processing and related traditional mechanics/materials science themes are not within the scope of JMBM. The Editorial Board also organizes topical issues on emerging areas by invitation. Topics Metals and Alloys Ceramics and Glasses Soils and Geomaterials Concrete and Cementitious Materials Polymers and Composites Wood and Paper Elastomers and Biomaterials Liquid Crystals and Suspensions Electromagnetic and Optoelectronic Materials High-energy Density Storage Materials Monument Restoration and Cultural Heritage Preservation Materials Nanomaterials Complex and Emerging Materials.