The Effect of Base Asphalt Aging on Performance of Crumb Rubber Modified Asphalt

Crumb rubber modified asphalt (CRMA) has been widely used because of its physical and environmental benefits. Many researchers have studied the aging of CRMA, but most of them have focused on the overall research of CRMA. Little research has been conducted on the effect of base asphalt aging on performance of CRMA. In this study, the aging effect of base asphalt on the performance of CRMA has been studied using the thin film oven test (TFOT). The results show that thermo-oxidative aging of base asphalt has a negative effect on the properties of CRMA. The aging of base asphalt resulted in the reduction of penetration, ductility, and elastic recovery of CRMA prepared as well as in an increased softening point and viscosity, and further deterioration of plasticity of CRMA. The latter effect continued to be more serious as the degree of aging of base asphalt increased.


  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 2026-2034
  • Monograph Title: CICTP 2020: Transportation Evolution Impacting Future Mobility

Subject/Index Terms

Filing Info

  • Accession Number: 01768124
  • Record Type: Publication
  • ISBN: 9780784483053
  • Files: TRIS, ASCE
  • Created Date: Dec 9 2020 3:03PM