Experimental Evaluation of Porous Asphalt Ultra-Thin Wearing Course

Ultra-thin porous asphalt wearing course can improve pavement performance and discharge surface water rapidly, but the research and application of this overlay technology was relatively insufficient. In this paper, the durability, void distribution characteristic, strength property, and anti-skidding property of open graded friction course 5 (OGFC-5) asphalt mixture were investigated based on laboratory test. Results showed that immersion scattering test can evaluate the durability of OGFC-5 asphalt mixture accurately. Furthermore, OGFC-5 asphalt mixture can achieve a satisfied water stability and scattering resistance when asphalt film thickness is larger than 14 um and asphalt viscosity is over 35000 Pa.s. With same design void volume, the void numbers of OGFC-5 asphalt mixture were more than OGFC-10 and OGFC-13, while the void area distribution range, longitudinal void volume and transverse void volume were less than OGFC-10 and OGFC-13, resulting in a small interconnected void volume and water permeability coefficient of OGFC-5 asphalt mixture. The shear strength index, including cohesion, internal friction angle, of OGFC-5 asphalt mixture was superior to OGFC-10 and OGFC-13, yet the anti-skidding property of OGFC-5 asphalt mixture was slightly weak correspondingly. The demonstrated experimental result in the study is of great significance for design and construction of ultra-thin porous asphalt wearing course.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee AHD18 Standing Committee on Pavement Preservation.
  • Corporate Authors:

    Transportation Research Board

    ,    
  • Authors:
    • Hu, Mingjun
    • Li, Lihan
    • Feng, Jingrong
    • Peng, Fangxing
  • Conference:
  • Date: 2019

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: References;
  • Pagination: 5p

Subject/Index Terms

Filing Info

  • Accession Number: 01698430
  • Record Type: Publication
  • Report/Paper Numbers: 19-00755
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 7 2018 9:23AM