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Mechanical properties of hot-mix asphalt using waste crumber rubber and phenol formaldehyde polymer

1 Department of Civil Engineering, Tenaga Nasional Univeristy (UNITEN), Selangor, Malaysia
2 Swedish College of Engineering and Technology, Wah Cantt, Pakistan

Special Issues: Construction Materials

Construction is always a complex in the nature and especially flexible road pavement which is the most prerequisites for the smooth transportation. The country economic growth is linked with smooth and fast transportation network where major transportation carried through road network interconnected cities and now major countries. Durable road pavement structure is an essential but pavement infrastructure is more vulnerable to the several failures among rutting and permanent deformation is the most common. Trial based studies encouraged to reuse waste polymers which may enhance the asphalt pavement. Study has chosen waste crumb rubber and Bakelite to study themechanical properties by addition ratio of 4.0%, 8.0%, 12.0%, 16.0% and 20.0%. Bitumen penetration grade 60/70 and ACW-20 were selected after examine the bitumen and aggregate tests Marshall mixture were designed and tested for density, Marshall stability, flow, air voids and stiffness properties for the control, crumb rubber and Bakelite samples. The encouraging result shows that addition of crumb rubber and Bakelite by 12% significantly improve the properties of asphalt mixture almost double Marshall stability strength compare to the control sample, higher density, control flow within the recommended range and higher stiffness shows strong resistance against rutting and permanent deformation. Study concluded crumb rubber and Bakelite has potential to enhance the mechanical properties and between them Bakelite shows better result in term of higher strength and stiffness.
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Keywords Marshall stability; mechanical properties; crumb rubber; bakelite; asphalt pavement failure

Citation: Mushtaq Ahmad, Salmia Beddu, Shah Hussain, Aneel Manan, Zarina binti Itam. Mechanical properties of hot-mix asphalt using waste crumber rubber and phenol formaldehyde polymer. AIMS Materials Science, 2019, 6(6): 1164-1175. doi: 10.3934/matersci.2019.6.1164

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