Performance Research of Polyphosphoric Acid Modified Asphalt

Performance of polyphosphoric acid modified asphalt and asphalt mixture was researched. Tests including penetration test, softening point test, DTT test and DSR test were done for polyphosphoric acid modified asphalt and base asphalt. The softening point test and DSR test results indicate that the high temperature performance of asphalt with polyphosphoric acid is enhanced compared to base asphalt. The DTT result indicate that the low temperature performance of polyphosphoric acid modified asphalt is enhanced compared to base asphalt. Field performance tests including rutting test, bending beam test and moisture test were done for polyphosphoric acid modified asphalt mixture and base asphalt mixture. The results indicate that the high temperature performance and low temperature performance of polyphosphoric acid modified asphalt mixture are enhanced compared to base asphalt, but the moisture stability is lowered. While the moisture stability performance of polyphosphoric acid modified asphalt mixture can reach the criterion£§ s requirement by adding anti-stripping agent. Economic analysis was done for base asphalt and polyphosphoric acid modified asphalt, and the results indicate that the use of polyphosphoric acid modified asphalt is very economical.

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  • Corporate Authors:

    Hubei Key Laboratory of Control Structure, Huazhong University of Science £¦ Technology, Wuhan Hubei 430074, China

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  • Authors:
    • LI-QIANG, F U
    • ZI-LING, WANG
    • XIAO-MING, HUANG
    • RUI, ZHANG
  • Publication Date: 2008-2

Language

  • Chinese

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Filing Info

  • Accession Number: 01155198
  • Record Type: Publication
  • Source Agency: Transport Research Centre (CDV)
  • Files: ITRD
  • Created Date: Apr 23 2010 10:57AM