Influence of commercial waxes and polyphosphoric acid on bitumen and asphalt concrete performance at low and medium temperatures

Edwards Y., Tasdemir Y. , Isacsson U.

MATERIALS AND STRUCTURES, vol.39, no.7, pp.725-737, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 7
  • Publication Date: 2006
  • Doi Number: 10.1617/s11527-006-9134-8
  • Page Numbers: pp.725-737


The influence of adding four types of commercial wax and one polyphosphoric acid to a non-waxy bitumen was investigated with regard to binder and asphalt concrete mixture performance. Binder properties were determined using dynamic shear rheometer (DSR), bending beam rheometer, force ductilometer and various conventional test methods. Asphalt concrete performance was investigated using tensile stress restrained specimen test (TSRST), creep test at -25 degrees C, dynamic creep test at 40 degrees C and complex modulus test at 0, 10 and 20 degrees C. Totally eleven binders and eight asphalt mixtures were investigated.