Abstract
A methodology for characterization of low-temperature fracture behavior of paving mixtures is presented. The critical elasto-plastic energy release rate, the JIc parameter, is adopted as the fracture criterion. The methodology permits the study of fracture in plasticized sulfur (Sulphlex) and asphaltic paving mixtures. To accommodate special fracture characteristics of pavement materials, certain modifications to the standard ASTM fracture testing procedures are proposed. The rationale for these modifications is also discussed. Approximate values of KIc, KQ, are correlated to the JQ measurements, which are a provisional representation of JIc, and results are compared with theoretical predictions. Tearing modulus is also investigated. The overall results of this study indicate that the JQ parameter can be effectively utilized for characterization of thermal cracking susceptibility of pavement materials.
| Original language | English |
|---|---|
| Pages (from-to) | 210-218 |
| Number of pages | 9 |
| Journal | Journal of Testing and Evaluation |
| Volume | 18 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 1990 |
Bibliographical note
Funding Information:Funding for this research was provided by the Federal Highway Administration (FHWA). Valuable assistance was offered to the author by the faculty and staff of the Texas A&M University; this work was the subject of the author's Master of Science research. Typing was done by Mr. Dale Hall, University of Kentucky.
Publisher Copyright:
© 1990 by the American Society for Testing and Materials.
Keywords
- JIc
- JQ
- KIc
- KQ
- Sulphlex
- asphalt
- elastoplastic fracture
- fracture testing
- low-temperature cracking
- pavement materials
- tearing modulus
- three-point bend
ASJC Scopus subject areas
- Materials Science (all)
- Mechanics of Materials
- Mechanical Engineering