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Evaluation of dynamic shear rheometer tests for emulsions : research project capsule.

File Language:
English


Details

  • Creators:
    Wasiuddin, Nazimuddin ORCID ICON IMG ; King, Jr., William
  • Corporate Creators:
    Louisiana Transportation Research Center
  • Subject/TRT Terms:
  • Publication/ Report Number:
    11-2B
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Louisiana
  • Corporate Publisher:
    Louisiana Transportation Research Center
  • Abstract:
    Currently, the Louisiana Department of Transportation and Development (LADOTD) ; requires ductility tests at 25°C according to AASHTO T51 for emulsions and two ; other tests, namely force ductility ratio at 4°C and elastic recovery at 10°C ; according to AASHTO T300 and AASHTO T301, respectively, for polymer modified ; emulsions. The fact that polymer modified asphalt is strain dependent creates ; questions regarding purchase specifications based on constant strain controlled ; tests. In developing performance grade (PG) specifications 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 tests ; 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/18396/dot_18396_DS1.pdf
  • File Type:
    Filetype[PDF - 172.56 KB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha-512:2cec499bb523887d10b51cd1d9839c971a556d02fb64b4f95defbb948c482d6b3c370f4c1d5acf9d7a1b20c51e4eb5af9e609bcda11b46a69b98a5543d5ee728
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