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Characterization of HMA mixtures containing high reclaimed asphalt pavement content with crumb rubber additives : [technical summary].

File Language:
English


Details

  • Creators:
    King, Bill
  • Corporate Creators:
    Louisiana Transportation Research Center
  • Subject/TRT Terms:
  • Publication/ Report Number:
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Louisiana
  • Corporate Publisher:
    Louisiana Transportation Research Center
  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-Design ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
  • Abstract:
    With the increase in hot mix asphalt (HMA) mixtures’ prices continuously climbing, highway agencies and owners are continually

    searching for methods to decrease material costs and maximize their benefi ts with no compromise in performance. One such method

    is to develop innovative technology to incorporate waste and recycled materials, such as crumb rubber from waste tires and reclaimed

    asphalt pavement (RAP), in HMA mixtures. As HMA pavements age over time, the asphalt binders become hardened and oxidized

    causing premature cracking in pavements. Thus, the current limiting factor in increasing the percentages of RAP is the excessive

    stiff ness of the resulting HMA mixture. Rejuvenating additives are often used to soften the asphalt cement binder of RAP materials

    and may enable the use of higher percentages of RAP in the fi nished product. Furthermore, absorption properties of crumb rubber

    may be used to carry those additives to revitalize the properties of the aged binders.

  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:611a655545b61f807e16ed9b8d678b92a51f49cd58ca6d468eb4da41e49888ad02c6a5947d257e70c3c452226b46c80bc400e532471e5e5ae235b0c911ca48c6
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  • File Type:
    Filetype[PDF - 124.32 KB ]
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