Mechanical Performance of Asphalt Mixture Containing Cup Lump Rubber

Norfazira, Mohd Azahar and Norhidayah, Abdul Hassan and Putra Jaya, Ramadhansyah and Hasanan, Md. Nor and Mohd Khairul Idham, Mohd Satar and Nordiana, Mashros and Azman, Mohamed (2019) Mechanical Performance of Asphalt Mixture Containing Cup Lump Rubber. Jurnal Teknologi (Sciences and Engineering), 81 (6). pp. 179-185. ISSN 0127-9696 (print); 2180-3722 (online). (Published)

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The use of cup lump rubber as an additive in asphalt binder has recently become the main interest of the paving industry. The innovation helps to increase the natural rubber consumption and stabilize the rubber price. This study evaluates the mechanical performance of cup lump rubber modified asphalt (CMA) mixture in terms of resilient modulus, dynamic creep and indirect tensile strength under aging conditions. The CMA mixture was prepared using dense-graded Marshall-designed mix and the observed behavior was compared with that of conventional mixture. From the results, both mixtures passed the volumetric properties as accordance to Malaysian Public Work Department (PWD) specification. A comparable result was obtained for stability and indirect tensile strength. The addition of 5% cup lump rubber provides better resistance against permanent deformation through the enhanced properties of resilient modulus and dynamic creep by 27% and 126% respectively under unaged condition. Furthermore, lower permanent strain was also observed for CMA compared to conventional mixture.

Item Type: Article
Uncontrolled Keywords: Cup lump rubber, CMA mixture, resilient modulus, permanent deformation, tensile strength, aging
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: 25 Oct 2019 03:48
Last Modified: 25 Oct 2019 03:48
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