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Stiffness Modulus of Asphaltic Concrete Incorporating Coir Fibre and Subjected to Aging

Abdullahi Ali, Mohammed and Putra Jaya, Ramadhansyah and Etienne, Joseph Marie Delbrel and Choong, Wee Kang and Sien, Ti Kok and Haryati, Yaacob and Norhidayah, Abdul Hassan and Nor Hayati, Abdul Hamid and Noram Irwan, Ramli (2018) Stiffness Modulus of Asphaltic Concrete Incorporating Coir Fibre and Subjected to Aging. In: E3S Web of Conferences: International Conference on Civil and Environmental Engineering (ICCEE 2018), 2-5 October 2018 , Kuala Lumpur, Malaysia. pp. 1-8., 65 (02003). ISSN 2261-236X

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Abstract

The aim of this paper is to investigate the performance response of a set of coir fibre modified asphalt samples subjected different ageing conditions and containing three different fibre contents. The laboratory experimental programs are indirect tensile test at 25°C and repeated load axial test at 40°C. The results showed that the fibres improved the mixture’s performance. The main findings obtained at 25°C for short and long-term ageing reveal that low fibre content at around 0.3% per aggregate weight display a stiffness modulus up to 14% higher than that of unmodified mixtures, hence showing that fibres may improve the bearing capacity and rut-resistance of asphalt mixtures. Conversely, as the amount of fibre increases to 0.5% and 0.7%, the stiffness decreases to the point of becoming unacceptably low, almost 80% lower than unmodified mixes stiffness. However the data also reveal that high fibre contents at 0.5% and above completely neutralize the impact of ageing on the mixture, indicating that fibre-modified mixtures would yield longer lives.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Asphaltic Concrete; Coir Fibre
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: 03 Dec 2018 02:00
Last Modified: 03 Dec 2018 02:11
URI: http://umpir.ump.edu.my/id/eprint/22986
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