• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    • Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Improving compressive strength for recycled aggregate concrete

    Author(s)
    Tam, V.
    Gao, X.
    Tam, C.
    Griffith University Author(s)
    Tam, Vivian WY.
    Year published
    2004
    Metadata
    Show full item record
    Abstract
    As Hong Kong will be running out of the landfill areas in the next eight to ten years, development of recycled aggregate concrete technology is imperative. Hence, the behaviors of the recycled aggregate (RA) in the recycled aggregate concrete (RAC) need to be fully explored. Currently, applications of RAC mainly confined to sub-base systems of roadwork such as pavements and some other non-structural purposes. The application of RAC to high grade concrete is rare resulted from its low compressive strength and high variability. This paper proposes a new approach in mixing concrete, namely, the two-stage mixing method, intended ...
    View more >
    As Hong Kong will be running out of the landfill areas in the next eight to ten years, development of recycled aggregate concrete technology is imperative. Hence, the behaviors of the recycled aggregate (RA) in the recycled aggregate concrete (RAC) need to be fully explored. Currently, applications of RAC mainly confined to sub-base systems of roadwork such as pavements and some other non-structural purposes. The application of RAC to high grade concrete is rare resulted from its low compressive strength and high variability. This paper proposes a new approach in mixing concrete, namely, the two-stage mixing method, intended to improve the compressive strength for RAC and hence lower its strength variability. Based upon our experimental work and results, improvements of 21% and 31% in strength to RAC with 30% RA substitute in 14 and 28 days respectively were achieved. The effect can be attributable to the porous nature of the RA and hence the pre-mix process can fill up some pores, resulting in a denser concrete and thus leading to a higher strength when compared with the traditional mixing approach.
    View less >
    Conference Title
    IABMAS'04 Second International Conference on Bridge Maintenance, Safety and Management
    Publisher URI
    http://mobile-dev.sub.jp/conference/IABMAS2004/
    Publication URI
    http://hdl.handle.net/10072/148157
    Collection
    • Conference outputs

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander