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Morphological Identification of Latex Modified Asphalt Binder Prepared with Surfactants

  • Ashiru Sani
  • Mohd Rosli Mohd HasanEmail author
  • Khairul Anuar Shariff
  • Sharvin Poovaneshvaran
  • Ilham Ibrahim
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 53)

Abstract

The microscopic spreadability and storage stability of conventional asphalt binder (PEN 60/70) and 6% natural rubber latex (NRL) modified asphalt binder (with and without the incorporation of surfactant) were investigated in this study. The prepared samples were assessed under both unaged and short-term ageing (RTFO-aged) conditions. Subsequently, the storage stability was conducted on all asphalt binder samples under conditioning condition designated at 180 °C for 72 h. Optical and polarising microscopes were used to observe the surface morphology of asphalt binders. The results revealed that for 6% NRL modified asphalt binder under unaged condition, the formation of globular agglomerated microstructures can be detected. However, the NRL modified asphalt binder that is subjected to RTFO-ageing with the incorporation of different additives yielded homogeneous and interconnected structures with lamellar orientation. This is due to the evaporation and absorption effects, which could have improved the rutting and fatigue resistance of asphalt binders. The storage stability results exhibited similar microstructures with little or no observable morphological differences. Overall, the incorporation of surfactants improved the miscibility, homogeneity, and stability of latex modified asphalt binder.

Keywords

Modified bitumen Elastomers Microscopy Microstructures Surfactants Storage stability 

Notes

Acknowledgements

The authors would like to appreciate the Universiti Sains Malaysia (USM) Division of Research and Innovation for the Fundamental Research Grant Scheme and Malaysian Ministry of Higher Education (203/PAWAM/6071358) and Short-Term Research Grant Scheme (304/PAWAM/60313048) for the financial support provided. Authors also would like to thank all the laboratory technicians and material suppliers that makes this study possible. The opinions, findings, and conclusions highlighted in this manuscript are explicitly of the authors and do not necessarily reflect the views of the USM and Malaysian Ministry of Higher Education.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Ashiru Sani
    • 1
    • 3
  • Mohd Rosli Mohd Hasan
    • 1
    Email author
  • Khairul Anuar Shariff
    • 2
  • Sharvin Poovaneshvaran
    • 1
  • Ilham Ibrahim
    • 4
  1. 1.School of Civil EngineeringUniversiti Sains MalaysiaNibong Tebal, Seberang Perai SelatanMalaysia
  2. 2.School of Materials and Mineral Resources EngineeringUniversiti Sains MalaysiaNibong Tebal, Seberang Perai SelatanMalaysia
  3. 3.Department of Civil EngineeringKano University of Science and TechnologyKanoNigeria
  4. 4.Department of Civil EngineeringTishk International University SulaimaniSulaimaniIraq

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