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Field Test of a Polyphosphoric Acid (PPA) Modified Asphalt Binder on Rt. 1 in Perry: Second Interim Report

File Language:
English


Details

  • Creators:
    Thompson, Bill
  • Corporate Creators:
    Maine. Dept. of Transportation. Transportation Research Division
  • Subject/TRT Terms:
  • Publication/ Report Number:
    08-13
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Maine
  • Corporate Publisher:
    Maine. Department of Transportation
  • Abstract:
    The Maine Department of Transportation (MaineDOT) uses the Superpave hot mix asphalt process and ; specifies asphalt binder grades using the Performance Grade criteria. The Department mainly uses asphalt ; binder grade PG64-28. This is an asphalt binder material that passes the performance tests for high ; temperatures (rutting potential) at 64 degrees Celsius and passes tests for low temperatures (thermal ; cracking) at 28 degrees Celsius. It is widely recognized in the industry that the addition of polyphosphoric ; acid to asphalt can increase the high temperature PG grade to the next higher grade. However, there are ; concerns among transportation agencies that this PPA could alter the long term performance of the asphalt ; binder. One of the major asphalt suppliers to MaineDOT paving projects uses PPA to alter their PG58-28 ; neat asphalt binder into a PG64-28. ; This experimental construction study was established to field test the long term performance of the PPA ; modified PG64-28 and compare it to the PG58-28 neat asphalt binder. ; A highway reconstruction project, NH-1000(800)E, along Rt. 1 in Perry, Maine was selected as a suitable ; site for this comparison.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/28474/dot_28474_DS1.pdf
  • File Type:
    Filetype[PDF - 378.57 KB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:3159bcedc6869b6c0975325ba376b46dc9e74942b5f67af0dbdd01686ee75308
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