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Development and Characterization of a High-Performance Polyurethane-Based Colored Pavement Binder Including Calcium Carbonate and Polyethylene Glycol for Improved Thermal and Mechanical Durability | ||
| Mechanics of Advanced Composite Structures | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 30 خرداد 1405 اصل مقاله (745.41 K) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/macs.2026.39710.1952 | ||
| نویسندگان | ||
| ABBAS Ghareghashi* 1؛ Mohammad Ali Torangi2؛ Hossein Taghipoor3 | ||
| 1Department of Chemical Engineering, Engineering Faculty, Velayat University, Iranshahr, Iran | ||
| 2Department of Polymer Engineering, Faculty of Engineering, Golestan University, Gorgan, Iran | ||
| 3Department of Mechanical Engineering, Engineering Faculty, Velayat University, Iranshahr, Iran | ||
| تاریخ دریافت: 23 آبان 1404، تاریخ بازنگری: 06 خرداد 1405، تاریخ پذیرش: 30 خرداد 1405 | ||
| چکیده | ||
| This work presents the development of a high-performance colored polyurethane (PU)-based pavement binder, modified with calcium carbonate (CaCO₃) and polyethylene glycol (PEG-4000, molecular weight 4000 g·mol⁻¹), designed to simultaneously enhance mechanical strength and thermal regulation performance. A suite of formulations containing varying concentrations of PEG (0–10 wt.%) and CaCO₃ (0–20 wt.%) was synthesized and subjected to a dual-stage curing protocol to ensure full cross-linking. The FTIR and XRD analyses indicated the preservation of the crystalline phases of CaCO₃, the PEG confinement and that PU was successfully crosslinked. The thermal characterization methods (DSC and TGA) showed that PEG imparted a latent heat storage capacity of around 87 J g⁻¹, while CaCO₃ improved thermal stability and increased residual mass during high-temperature exposure. Mechanical testing revealed a notable increase in tensile strength, rising from approximately 1.07 to 3.16 MPa, along with an elongation at break reaching around 276% in the optimized formulations. Measurements of surface temperature under simulated solar exposure showed a reduction of 8–10 °C compared to traditional asphalt. The results demonstrate the synergistic effect of CaCO₃ reinforcement and PEG-induced thermal buffering in an environmentally friendly pavement binder in environmentally friendly pavement binder, thermally adaptable, thereby ensuring long-term structural durability. These findings provide a practical framework for designing climate-adaptive pavement binders with improved long-term durability. | ||
| کلیدواژهها | ||
| Polyurethane؛ Colored Pavement Binder؛ Calcium Carbonate؛ Polyethylene Glycol (PEG)؛ Phase Change Material | ||
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آمار تعداد مشاهده مقاله: 31 تعداد دریافت فایل اصل مقاله: 114 |
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