Moisture-Induced Damage Resistance, Stiffness and Fatigue Life of Asphalt Mixtures with Different Aggregate-Binder Adhesion Properties

This study investigated the effects of aggregate-binder adhesiveness on moisture damage and on fatigue life of four different asphalt mixtures. Adhesivemeness was assessed by: (i) qualitative observation of binder stripping from the coarse aggregate’s surface, incremented in this paper with digital image processing, and (ii) modified Lottman test. Fatigue damage modeling was performed, using tension-compression test results. The granitic aggregate produced mixtures with better moisture resistance and fatigue properties when compared to the phonolitic aggregate (same ranking as for aggregate-binder adhesiveness). The same was observed for mixtures with binder containing an anti-stripping agent. It was demonstrated that mixtures with better aggregate-binder adhesiveness have greater fatigue life.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01708943
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 11 2019 3:15PM