Experiments on the shear-flow properties and the creep-rupture behavior of modified asphalt cements were conducted to evaluate the performance of rubber (from used tires) as an asphalt cement modifier. Results suggest that various asphalt/rubber samples display shear-thickening, Newtonian, and shear-thinning behavior depending on the shear rate. The addition of rubber increased the shear viscosity, linear viscoelastic functions, elasticity, and creep resistance of the asphalt cement. These increases suggest that the addition of rubber will improve the low temperature properties of asphalt cement, and that such modifications are essential to reduce the tendency of asphaltic-paving substances to crack in cold climates and to increase the life cycle of the road.


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  • Accession Number: 00712758
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Oct 25 1995 12:00AM