Mechanical performance of asphalt mixture containing nano-charcoal coconut shell ash

Siti Nur Amiera, Jeffry and Putra Jaya, Ramadhansyah and Norhidayah, Abdul Hassan and Haryati, Yaacob and M. K. I., Mohd Satar (2018) Mechanical performance of asphalt mixture containing nano-charcoal coconut shell ash. Construction and Building Materials, 173. pp. 40-48. ISSN 0950-0618. (Published)

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Rutting and fatigue cracking are issues in pavement engineering that led to numerous studies for improving pavement performance. Bitumen modification by nanomaterials is a method that can enhance the performance of asphalt mixtures due to the large surface area and small size (1–100 nm) of nanomaterials. Therefore, this research was focused on the influence of nano-charcoal coconut shell ash (NCA)-modified bitumen towards the engineering properties of asphalt mixtures. Engineering property tests were carried out on 0% (control), 1.5%, 6% and 7.5% NCA asphalt mixtures. These tests include Marshall analysis, indirect tensile strength (ITS), resilient modulus and dynamic creep test. The microstructure properties of the asphalt mixtures were evaluated using Atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM). Results showed that the Marshall stability, ITS, resilient modulus and dynamic creep of the asphalt mixture were significantly improved with the addition of 6% NCA. AFM results showed that 6% NCA has the lowest surface roughness which improved the adhesion of asphalt mixture. Flat and dense asphalt mixture was observed from FESEM which contributed to the enhancement of asphalt mixture engineering performance.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Nano; Charcoal ash; Coconut shell; Asphalt mixture; Engineering properties
Subjects: T Technology > TE Highway engineering. Roads and pavements
Faculty/Division: Faculty of Civil Engineering & Earth Resources
Depositing User: PM Dr. Ramdhansyah Putra Jaya
Date Deposited: 13 Sep 2018 02:31
Last Modified: 13 Sep 2018 03:36
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