Impact of characteristics of asphalt concrete wearing courses on crack resistance at low temperatures

Cracks of various shapes and sizes are among the most widespread damage to road surfaces. The main reason for the formation of cracks in the asphalt layer are increasing tensile and shear stress and strain to the point when exceeds the strength of the material. To evaluate influential factors on strength of the asphalt several laboratory tests of the asphalt mixture AC 8 and AC 11 at low temperatures according to EN 12697-46 were performed. We studied effect on the content of bitumen and void content in asphalt samples on maximum tensile strength reserve and temperature at maximum reserve. The impact of different start temperature and different sample preparation technique on the TSRST test results was evaluated. With statistical analyzes we analyzed effect of the specimen length, and bulk density on maximum tensile strength reserve and temperature at maximum reserve. Main results of our study were recommendations for test conditions and for further research.

Language

  • English

Media Info

  • Pagination: 7p
  • Monograph Title: Transport Research Arena (TRA) 2014 Proceedings

Subject/Index Terms

Filing Info

  • Accession Number: 01534624
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: VTI, TRIS, ATRI
  • Created Date: Aug 14 2014 10:16AM