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    Effect of Aggregate Fine Contents on Foamed Bitumen Stabilisation

    190933_76142_72886.pdf (645.1Kb)
    Access Status
    Open access
    Authors
    Huan, Yue
    Jitsangiam, Peerapong
    Siripun, Komsun
    Nikraz, Hamid
    Date
    2012
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Huan, Yue and Jitsangiam, Peerapong and Siripun, Komsun and Nikraz, Hamid. 2012. Effect of Aggregate Fine Contents on Foamed Bitumen Stabilisation, in the proceedings of the ISAP 2012 International Symposium on Heavy Duty Asphalt Pavements and Bridge Deck Pavements, May 23-25 2012. Nanjing, China: International Society for Asphalt Pavements (ISAP).
    Source Title
    Proceedings of the ISAP 2012 International Symposium on Heavy Duty Asphalt Pavements and Bridge Deck Pavements
    Source Conference
    The ISAP 2012 International Symposium on Heavy Duty Asphalt Pavements and Bridge Deck Pavements
    Additional URLs
    http://asphalt.org/publications/conference-proceedings
    URI
    http://hdl.handle.net/20.500.11937/18299
    Collection
    • Curtin Research Publications
    Abstract

    Increased popularity of foamed bitumen as a stabilising agent in recent years has resulted in a necessity for research into the material properties of foamed bitumen stabilised pavements, and the effects of varied design parameters on these properties. The objective of this project is to assess the effects of aggregate gradation in foamed bitumen mixes on material properties characteristics and mechanical performance. The focus was given into the fines particle percentage: that is, particles with a nominal diameter of 75µm or less, as it is recognised that this range of particle sizes has a significant effect on binding capabilities of foamed bitumen. The results were obtained by comparing a number of samples of ranging from 0% to 25% fines at 5% increments, and with 0%, 2% and 4% foamed bitumen contents. Comparisons were drawn by testing typical material properties of unconfined compressive strength, indirect tensile strength and indirect tensile resilient modulus. Test results indicated that deficient productions were yielded and nubby bitumen was easily to be observed with a lower amount of fines content. However, the higher fines content was detrimental to the mechanical strength which was mainly relied on the interlock between coarse particles.

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