Research on Fatigue Resistance Performance of Nano-Rubber Powder Modified Asphalt

Many applications, including road construction, have used asphalt pavement for a long time. During asphalt pavement service life, stripping, raveling, cracking, moisture damage, and other pavement distresses often occur due to heavy loading and busy traffic. This research investigated the possibility of using nano-rubber as an asphalt modifier. The American Association of State Highway and Transportation Officials T321-03 standard was used to conduct fatigue testing. A four point bending test using the phenomenological fatigue methodology at two temperatures was used to investigate fatigue resistance performance of the original asphalt concrete and modified asphalt concrete. Good basic physical performance was shown by the results for rubber modified asphalt concretes. Although modified asphalt-based composite flexural stiffness modulus has less strain influence at 5°C, the effect was obvious at 15°C. Nano-rubber modified asphalt-based composite fatigue performance was better than that of styrene-butadiene-styrene modified asphalt base asphalt. A small amount of nano-rubber powder could increase modified asphalt concrete toughness greatly, when comparing the toughening effect of other ordinary modification powders, and keep them in high tension and heat resistance. Aging resistance is an advantage of nano-rubber powder modified asphalt, which could improve modified asphalt service life and reduce pavement maintenance cost.

  • Availability:
  • Authors:
    • Wu, Shaopeng
    • Han, Jun
    • Wang, Hong
  • Publication Date: 2009-9

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01145297
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 8 2009 9:12PM