Evaluation of Tack Coat Bond Strength for Mixtures Containing Baghouse Fines

Asphalt layer delamination was one of the distresses observed by the North Carolina Department of Transportation (NCDOT). Among other distresses observed were distortion, manifesting itself in the form of surface corrugation and ruts as well as development of crescent shaped slippage cracks. These distresses adversely affect ride quality and safety. After a preliminary investigation it was found that the debonding process could have been initiated by: improper selection and application of tack coat; adverse effect of moisture on tack coat; and improper use of baghouse fines. The goal of this study is to evaluate these causes. In addition to the three factors listed, other variables such as construction techniques used for placement and compaction of hot mix asphalt were evaluated briefly to ensure that these were not major contributors to the distresses under investigation. Based on the results of the study, the following were recommended:

  • Availability:
  • Authors:
    • Kulkarni, M B
    • Fischer, W Kevin
    • Tayebali, Akhtarhusein A
  • Publication Date: 2005-9

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01006709
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 27 2005 1:58PM