Bilema, Munder and Wah Yuen, Choon and Alharthai, Mohammad and Hazim Al-Saffar, Zaid and Oleiwi Aletba, Salam Ridha and Md Yusoff, Nur Izzi (2023) Influence of warm mix asphalt additives on the physical characteristics of crumb rubber asphalt binders. Applied Sciences-Basel, 13 (18). ISSN 2076-3417, DOI https://doi.org/10.3390/app131810337.
Full text not available from this repository.Abstract
This investigation is centered around the application of warm mix asphalt (WMA) technologies to address workability concerns linked to rubberized asphalt binders. The primary aim of incorporating crumb rubber (CR) and WMA additives is to establish a robust paving method that fosters energy conservation, efficient waste management, noise reduction, and improved overall performance. The current study aims to comprehensively characterize and differentiate the physical attributes of rubberized asphalt binders by employing three distinct WMA additives: Sasobit, Cecabase RT and Rediset WMX. These additives are introduced into eight unique asphalt binders. Laboratory assessments are carried out to evaluate the workability and physical properties of these binders. The evaluation encompasses penetration, softening point, penetration index, penetration viscosity number, storage stability, ductility, viscosity, and stiffness modulus analyses. The findings indicate that the rubberized asphalt binder enhanced with Sasobit demonstrates the highest levels of both hardness and softening point in comparison to asphalt binders supplemented with alternative WMA additives. The evaluation of storage stability underscores the satisfactory stability across all modified asphalt binders. Both the unmodified and modified binders meet the requirements stipulated by the ductility test; the rubberized asphalt binder modified with Rediset falls short. The rubberized asphalt binder improved with Sasobit displays the most notable enhancement in workability. Furthermore, the blend of crumb rubber and Sasobit binder reveals the highest stiffness modulus values under conditions of intermediate and high temperatures with 1.88 and 0.46 MPa, respectively. In summation, the rubberized asphalt binder incorporating crumb rubber with Sasobit showcases superior improvements in both stiffness and workability compared to counterparts modified with Cecabase RT and Rediset WMX.
| Item Type: | Article |
|---|---|
| Funders: | Najran University [Grant No: NU/RCP/SERC/12/3], Universiti Malaya |
| Uncontrolled Keywords: | Warm mix asphalt (WMA); Crumb rubber (CR); WMA additives; physical properties; Workability; Stiffness modulus |
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 10 Nov 2025 04:29 |
| Last Modified: | 10 Nov 2025 04:29 |
| URI: | http://eprints.um.edu.my/id/eprint/49666 |
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