Keymanesh, Mahmoud Reza, Jafari, Amin. (1405). Optimizing the Amount of Multicomponent Polymer Fibers in RAP Mixtures Based on the BMD Criteria. هنرهای کاربردی, 14(3), -. doi: 10.22075/jrce.2025.2361
Mahmoud Reza Keymanesh; Amin Jafari. "Optimizing the Amount of Multicomponent Polymer Fibers in RAP Mixtures Based on the BMD Criteria". هنرهای کاربردی, 14, 3, 1405, -. doi: 10.22075/jrce.2025.2361
Keymanesh, Mahmoud Reza, Jafari, Amin. (1405). 'Optimizing the Amount of Multicomponent Polymer Fibers in RAP Mixtures Based on the BMD Criteria', هنرهای کاربردی, 14(3), pp. -. doi: 10.22075/jrce.2025.2361
Keymanesh, Mahmoud Reza, Jafari, Amin. Optimizing the Amount of Multicomponent Polymer Fibers in RAP Mixtures Based on the BMD Criteria. هنرهای کاربردی, 1405; 14(3): -. doi: 10.22075/jrce.2025.2361

Optimizing the Amount of Multicomponent Polymer Fibers in RAP Mixtures Based on the BMD Criteria

Journal of Rehabilitation in Civil Engineering
دوره 14، شماره 3 - شماره پیاپی 43، پاییز 2026    اصل مقاله (1.24 M)
نوع مقاله: Regular Paper
شناسه دیجیتال (DOI): 10.22075/jrce.2025.2361
نویسندگان
Mahmoud Reza Keymanesh* 1؛ Amin Jafari2
1Associate Professor, Department of Civil Engineering, Payame Noor University, Tehran, Iran
2Department of Civil Engineering, Payame Noor University, Tehran, Iran
چکیده
As the final part of a pavement, asphalt mixtures are aimed to ensure the road users’ safety and comfort and any defect in them can disturb the users. They usually consist of bitumen, aggregates and air (as main components) plus a wide range of additives, among which fibers are more important and attract the attention of researchers because they overcome the tensile weakness of asphalt mixtures and improve their performance features. This research has used multicomponent fibers to modify the properties of asphalt mixtures containing reclaimed asphalt pavement overhauled by waste, engine-oil rejuvenator, and applied the balanced mix-design method to optimize the materials. The dynamic creep test, Illinois Flexibility Index (IFI), indirect tensile strength (ITS), and tensile strength ratio (TSR) were utilized to evaluate the mixtures’ performance. The findings revealed that the incorporation of multi-component polymer fibers improved the rutting resistance of asphalt mixtures by up to 70%, whereas the addition of waste oil decreased rutting resistance by up to 1.5%. Furthermore, the highest IFI values were recorded for the specimens containing waste oil. However, the rejuvenator exhibited a negligible effect on the TSR values. Considering the Balanced Mix Design (BMD) criteria, two mixtures containing 40% reclaimed asphalt pavement (RAP), 0.75% rejuvenator, and 0.8% or 1.2% multi-component fibers were identified as the optimum mixtures in this study.

تازه های تحقیق
  • The performance properties of asphalt mixtures containing 5-component fibers were investigated.
  • The high temperature properties of asphalt mixtures were investigated using dynamic creep testing.
  • The cracking properties of asphalt mixtures were investigated using IFIT testing.
  • The optimal amount of 5-component fibers was determined using the BMD approach.
کلیدواژه‌ها
Reclaimed asphalt pavement؛ Polymer fibers؛ Balanced mix-design؛ Recycled rejuvenator
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