Journal of Transportation Research

Journal of Transportation Research

Investigating the Performance of Asphalt Mixture Modified with Environmentally Friendly Fibers as a Sustainable Pavement Material

Author
Azin Chitsazan
Department of Land Use Planning and Assessment, Science and Research Branch, Islamic Azad University, Tehran, Iran
10.22034/tri.2024.197195
Abstract
This research was conducted to evaluate the performance of asphalt mixture modified with environmentally friendly calcium sulfate fiber 1 (CSWF) as a sustainable pavement material. The asphalt mixture containing 0.2% by weight, 0.4% by weight, 0.6% by weight and 0.8% by weight of CSWF was designed by Marshall's method. Asphalt mixtures without fibers were also prepared as control samples.    Marshall test, wheel rut test, low temperature bending test, moisture sensitivity test and fatigue test were conducted to evaluate the performance of CSWF asphalt mixture and the fiber reinforcement mechanism was discussed.    The results showed that CSWF can improve high temperature stability and low temperature cracking resistance of asphalt mixture. Moisture resistance of asphalt mixtures was also improved in the presence of CSWF. When the percentage of CSWF was 0.4% by weight of the total mixture, the asphalt mixture performance is the best. Compared with conventional asphalt mixture, CSWF asphalt mixture not only used power plant waste effectively to preserve ecosystems, but also improved pavement performance, which is suggested to be used in sustainable pavement construction and rehabilitation.
Keywords
Fibers
Asphalt Mixture
Environment
Performance
Fatigue
Modified Bitumen
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