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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:
    State Project No. 736-99-1574 ; LTRC Project No. 09-1B
  • 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
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/25935/dot_25935_DS1.pdf
  • File Type:
    Filetype[PDF - 124.32 KB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha-512:611a655545b61f807e16ed9b8d678b92a51f49cd58ca6d468eb4da41e49888ad02c6a5947d257e70c3c452226b46c80bc400e532471e5e5ae235b0c911ca48c6
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