Durability of epoxy-bonded TiO2-modified aggregate as a photocatalytic coating layer for asphalt pavement under vehicle tire polishing

D. Wang, Zhen Leng, H. Yu, M. Hüben, J. Kollmann, M. Oeser

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)


Two methods, namely the surface coating and pore filling methods, were adopted to produce the TiO2modified aggregate. Their photocatalytic efficiency and mechanical performance under vehicle tire polishing, applied by an Aachen Polishing Machine (APM), were investigated and compared. Results indicated that it is feasible to build durable photocatalytic pavement using the new approach and material spreading process reported in this study. Both TiO2modification methods provided the spreading aggregate with excellent and comparable NO degradation rates before polishing; however, the pore filling method provided better long-term NO degradation efficiency. The spreading aggregate modified by either method showed excellent long-term skid resistance and surface texture properties after vehicle tire polishing.
Original languageEnglish
Pages (from-to)1-7
Number of pages7
Publication statusPublished - 1 Jan 2017


  • Epoxy-bonded aggregate
  • Photocatalytic asphalt pavement
  • Titanium dioxide (TiO ) 2
  • Wearing resistance

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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