Research Article Open Access

Application of Bio-Modified Montmorillonite Clay to Enhance Asphalt Oxidation Resistance

Shahrzad Hosseinnezhad1, Elham H. Fini1 and Taher M. Abu-Lebdeh1
  • 1 North Carolina A&T State University, United States
American Journal of Engineering and Applied Sciences
Volume 11 No. 2, 2018, 433-443

DOI: https://doi.org/10.3844/ajeassp.2018.433.443

Submitted On: 17 February 2018 Published On: 31 March 2018

How to Cite: Hosseinnezhad, S., Fini, E. H. & Abu-Lebdeh, T. M. (2018). Application of Bio-Modified Montmorillonite Clay to Enhance Asphalt Oxidation Resistance. American Journal of Engineering and Applied Sciences, 11(2), 433-443. https://doi.org/10.3844/ajeassp.2018.433.443

Abstract

This study evaluates the effectiveness of using a Bio-modified Nanoclay additive (BNC) to reduce the oxidative aging of asphalt pavements. The study results through X-Ray Diffraction analysis showed that the modification of montmorillonite clay with bio-modifier increased the basal d-spacing of clay. The resulting nanoclay with increased interlayer spacing was chosen for application in asphalt binder. Rheological characterization of clay-modified asphalt binder were studied before and after oxidation aging. The effects of BNC on asphalt complex modulus were observed to be prevailing in the intermediate to high-temperature range. The aging resistance of asphalt binder showed improvement with the addition of nanoclay and the improvement was more notable in presence of bio modified-nanoclay than pure clay.

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Keywords

  • Asphalt Oxidation
  • Clay
  • Bio-Modified Asphalt
  • Bio-bonder
  • Aging Resistance