Characterization of Trackless Tacks Using Fracture Mechanics

Current practices lack a standard procedure for evaluating the performance of trackless tack. The primary purpose of this study is to develop a procedure through literature search that incorporates the combined shear and tensile stress state that an interlayer tack coat experiences in between a hot-mix asphalt overlay and an existing pavement, using the crack mouth opening displacement (CMOD), a standard method to predict the fracture energy. Recent developments in fracture testing and numerical simulation techniques have provided stronger links between material fracture properties and field cracking performance of asphalt pavements. Using the fracture energy as a criterion, performance of various trackless tack materials can be compared. The higher fracture energy required to crack a material, the better performance the material will have. The fracture energy methodology can be applied to characterize the performance of trackless tack with confidence.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 186-193
  • Monograph Title: Design, Analysis, and Asphalt Material Characterization for Road and Airfield Pavements

Subject/Index Terms

Filing Info

  • Accession Number: 01535071
  • Record Type: Publication
  • ISBN: 9780784478462
  • Files: TRIS, ASCE
  • Created Date: Jul 21 2014 3:02PM