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Evaluation of dynamic shear rheometer tests for emulsions : [tech summary].

File Language:
English


Details

  • Creators:
    Wasiuddin, N. ; King, Bill
  • Corporate Creators:
    Louisiana Transportation Research Center
  • Subject/TRT Terms:
  • Publication/ Report Number:
    SIO No. 30000163 ; LTRC Project No. 11-2B
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Louisiana
  • Corporate Publisher:
    Louisiana Transportation Research Center
  • Abstract:
    Currently, the Louisiana Department of Transportation and Development (DOTD) requires ductility tests at 25°C according to ; AASHTO T51 for emulsions, force ductility ratio at 4°C, and elastic recovery at 10°C according to AASHTO T300 and AASHTO ; T301, respectively, for polymer modifi ed emulsions. The fact that polymer-modifi ed asphalt is strain dependent creates questions ; regarding purchase specifi cations based on constant strain controlled tests. In developing performance grade (PG) specifi cations for ; emulsions, one of the tests proposed in several reports is the multiple stress creep recovery (MSCR) test according to ASTM D7405. ; This test determines percent elastic recovery and non-recoverable creep compliance and measures the damage behavior in the ; linear and nonlinear range. Compared with the current binder protocol, a repeated creep test protocol (or some other method that ; varies the frequency and strain and measures the accumulated permanent strain of the binder) represents an improvement in the ; theoretical and practical concepts that will better rate the binder properties related to performance.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/22313/dot_22313_DS1.pdf
  • File Type:
    Filetype[PDF - 124.85 KB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha-512:0d8c7c8b31c0ca121688099698c54fb91385d341e36ce476bbde9e21371e3676e83f304ac0d080b9b3a993f693fef41fd5ec4e4769b13530bd5a1adf58400543
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