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Effect of Crumb Rubber Modifiers (CRM) on Characteristics of Asphalt Binders in Sudan

Received: 6 January 2017     Accepted: 20 January 2017     Published: 14 February 2017
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Abstract

The use of Crumb Rubber Modifiers (CRM) in flexible pavements to improve characteristics of asphalt binders has become a technique of great potential in recent years. In this regard an experimental program was undertaken to study the influence of CRM on the physical properties of asphalt binder. Asphalt cement modified with varying percentages of CRM, 0, 5, 10, 15, 20, and 30 percent were studied. Penetration, ductility, viscosity, softening point, flash and fire points, and specific gravity tests were performed on base and modified asphalts. The tests results show that addition of CRM to base asphalt has significant influence on its properties. Comparing the tests results, the viscosity, softening point, flash and fire points of the modified asphalts increased significantly, coupled with reduction in penetration and ductility as the CRM content increased. Addition of 15% CRM resulted in 200% and 15% increment in viscosity and softening point of base asphalt respectively, while the reduction in ductility and penetration were almost 75% and 25% respectively. It could be concluded that modification of asphalt binders by crumb rubber is successful and more beneficial technique.

Published in International Journal of Materials Science and Applications (Volume 6, Issue 2-1)

This article belongs to the Special Issue 2D Materials and Van Der Waals Heterostructures

DOI 10.11648/j.ijmsa.s.2017060201.11
Page(s) 1-6
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Base Asphalt, CRM, Modified Asphalt, Properties

References
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[3] Bahia H. U., Effect of Crumb Rubber Modifiers (CRM) on performance related properties of Asphalt Binders. Journal of Association of Asphalt Paving Technologists. Vol. 63, 1994, pp. 414-449.
[4] Billiter et al., Production of Asphalt-Rubber Binders by High-Cure Conditions. In Transportation Research Record: Journal of the Transportation Research Board, No. 1586, Transportation Research Board of the National Academies, Washington, D. C., 1997, pp. 50-56.
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[8] Abdelaziz M., Karim M. R., Rheological evaluation of ageing properties of rubber crumb modified bitumen. J. Eastern Asia Soc. Trans. Stud., 5: 820-833. October 2003, ISSN 1341-8521.
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[14] Liang R. Y., and Lee S., Short-term and long-term aging behavior of rubber modified asphalt paving mixtures. Transportation Research Record: Journal of the Transportation Research Board, No. 1530, (1996), pp.11-17.
[15] Ruth B. E., and Roque R., Crumb Rubber Modifier (CRM) in asphalt pavements. Proceedings of the Transportation Congress, (1995). pp. 768-785.
[16] Yetkin Y., Polymer modified asphalt binders. Constr Build Mater; 21: (2007), pp. 66–72.
[17] Cao R., Chen R., Laboratory study on process parameters of asphalt rubber and their effects on performance. J Southeast Univ (Nat SciEdn); 38: (2008), pp. 269–273.
[18] Bahia H. U., Hislop W. P., Zhai H., Rangel A., Classification of asphalt binder into simple and complex binder. J. Assoc. Asphalt Paving Technol., 67: (1998), pp. 1-41.
[19] Paulo A. P., Jorge C. P., Laboratory optimization of continuous blend asphalt rubber. Proc. 3rd Eur. Pav. Asset. Manage., EPAM 3. Coimbra, 2008.
[20] Abdelrahman M., Ghavibazoo A., Ragab M., Mechanism of Crumb Rubber Modifier Dissolution into Asphalt Matrix and Its Effect on Final Physical Properties. Transportation Research Record Journal of the Transportation Research Board, (2013), Paper No. 13-4259
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Cite This Article
  • APA Style

    Magdi Mohamed Eltayeb Zumrawi. (2017). Effect of Crumb Rubber Modifiers (CRM) on Characteristics of Asphalt Binders in Sudan. International Journal of Materials Science and Applications, 6(2-1), 1-6. https://doi.org/10.11648/j.ijmsa.s.2017060201.11

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    ACS Style

    Magdi Mohamed Eltayeb Zumrawi. Effect of Crumb Rubber Modifiers (CRM) on Characteristics of Asphalt Binders in Sudan. Int. J. Mater. Sci. Appl. 2017, 6(2-1), 1-6. doi: 10.11648/j.ijmsa.s.2017060201.11

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    AMA Style

    Magdi Mohamed Eltayeb Zumrawi. Effect of Crumb Rubber Modifiers (CRM) on Characteristics of Asphalt Binders in Sudan. Int J Mater Sci Appl. 2017;6(2-1):1-6. doi: 10.11648/j.ijmsa.s.2017060201.11

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  • @article{10.11648/j.ijmsa.s.2017060201.11,
      author = {Magdi Mohamed Eltayeb Zumrawi},
      title = {Effect of Crumb Rubber Modifiers (CRM) on Characteristics of Asphalt Binders in Sudan},
      journal = {International Journal of Materials Science and Applications},
      volume = {6},
      number = {2-1},
      pages = {1-6},
      doi = {10.11648/j.ijmsa.s.2017060201.11},
      url = {https://doi.org/10.11648/j.ijmsa.s.2017060201.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.s.2017060201.11},
      abstract = {The use of Crumb Rubber Modifiers (CRM) in flexible pavements to improve characteristics of asphalt binders has become a technique of great potential in recent years. In this regard an experimental program was undertaken to study the influence of CRM on the physical properties of asphalt binder. Asphalt cement modified with varying percentages of CRM, 0, 5, 10, 15, 20, and 30 percent were studied. Penetration, ductility, viscosity, softening point, flash and fire points, and specific gravity tests were performed on base and modified asphalts. The tests results show that addition of CRM to base asphalt has significant influence on its properties. Comparing the tests results, the viscosity, softening point, flash and fire points of the modified asphalts increased significantly, coupled with reduction in penetration and ductility as the CRM content increased. Addition of 15% CRM resulted in 200% and 15% increment in viscosity and softening point of base asphalt respectively, while the reduction in ductility and penetration were almost 75% and 25% respectively. It could be concluded that modification of asphalt binders by crumb rubber is successful and more beneficial technique.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Effect of Crumb Rubber Modifiers (CRM) on Characteristics of Asphalt Binders in Sudan
    AU  - Magdi Mohamed Eltayeb Zumrawi
    Y1  - 2017/02/14
    PY  - 2017
    N1  - https://doi.org/10.11648/j.ijmsa.s.2017060201.11
    DO  - 10.11648/j.ijmsa.s.2017060201.11
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
    SP  - 1
    EP  - 6
    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.s.2017060201.11
    AB  - The use of Crumb Rubber Modifiers (CRM) in flexible pavements to improve characteristics of asphalt binders has become a technique of great potential in recent years. In this regard an experimental program was undertaken to study the influence of CRM on the physical properties of asphalt binder. Asphalt cement modified with varying percentages of CRM, 0, 5, 10, 15, 20, and 30 percent were studied. Penetration, ductility, viscosity, softening point, flash and fire points, and specific gravity tests were performed on base and modified asphalts. The tests results show that addition of CRM to base asphalt has significant influence on its properties. Comparing the tests results, the viscosity, softening point, flash and fire points of the modified asphalts increased significantly, coupled with reduction in penetration and ductility as the CRM content increased. Addition of 15% CRM resulted in 200% and 15% increment in viscosity and softening point of base asphalt respectively, while the reduction in ductility and penetration were almost 75% and 25% respectively. It could be concluded that modification of asphalt binders by crumb rubber is successful and more beneficial technique.
    VL  - 6
    IS  - 2-1
    ER  - 

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Author Information
  • Department of Civil Engineering, University of Khartoum, Khartoum, Sudan

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