Influence of Reclaimed Asphaltic Pavement (RAP) on Cold Mix Asphalt performance

Rusli, Nurul Billahizzati and Basri, Nur Khairiyah and Wan Azahar, Wan Nur Aifa and Md. Husain, Nadiah and Wan Hassan, Wan Nur Firdaus and Ramli, Ahmad Bukhari and Che Deraman, Siti Noratikah and Md Kassim, Tahara Ramadzan (2025) Influence of Reclaimed Asphaltic Pavement (RAP) on Cold Mix Asphalt performance. In: Proceedings of the 2nd International Conference on Civil Engineering for Sustainability and Disaster Resilience, Lecture Notes in Civil Engineering. Springer, Singapore, pp. 135-148. ISBN 978-981-96-7813-6

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Abstract

Cold mix asphalt (CMA) technology is commonly used in maintenance work like repairing potholes. It is convenient to use in road maintenance because it does not require any heating process that will ease the transporting and storing operation. The performance of incorporating reclaimed asphalt pavement (RAP) in CMA was explored in this research. Six CMA samples were prepared for this inves-tigation including 0, 20, 40, 60 80 and 100% RAP to determine the most optimum RAP content in replacing the virgin aggregate. Two stages of experiments were conducted: LAAV tests as well as Marshall Stability Test. The results show that the stability for patching pothole mix was greater than 6.0 kN where all samples with 6.1% OBC except 0% RAP and 100% RAP meet Road Engineering Asso-ciation Malaysia (REAM) criteria. Furthermore, all samples except 40% RAP did not exceed REAM requirements. However, all OBC samples except 20% RAP and 6.1% OBC meet REAM specifications. All flow rates were 2–5 mm. The balanced flow value ensures the mix is flexible enough to avoid cracking and rigid enough to survive rutting and deformation. Stability, flow, and stiffness tests show that adding 40% RAP to CMA increases stability and stiffness. The stability, flow, and stiffness of 40% RAP and 60% aggregate were much better than the control sample. The sample had the maximum stiffness at 3028.571 N/mm and 4404.854 N/mm for OBC 6.1% and 6.2%. Stability, flow, and stiffness fulfil REAM pothole mixed pathing guidelines, ensuring the reliability and durability of the design. Therefore, it can be concluded that 40% RAP is the best combination aggregate for cold mix asphalt pothole repair.

Item Type:	Book Chapter
Uncontrolled Keywords:	Cold mix asphaltcdotReclaimed asphalt pavementcdotPothole patching mix
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA1001 Transportation engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA170 Environmental engineering. Sustainable engineering T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction T Technology > TE Highway engineering. Roads and pavements T Technology > TE Highway engineering. Roads and pavements > TE250 Pavement and paved roads
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Civil Engineering
Depositing User:	Dr NUR KHAIRIYAH BASRI
Date Deposited:	24 Dec 2025 10:10
Last Modified:	24 Dec 2025 10:10
Queue Number:	2025-12-Q882
URI:	http://irep.iium.edu.my/id/eprint/125763

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