原文传递
CHARACTERIZATION OF FRACTURE IN ASPHALTIC MIXES BASED ON A MOLECULAR APPROACH.
| 题名： | CHARACTERIZATION OF FRACTURE IN ASPHALTIC MIXES BASED ON A MOLECULAR APPROACH. |
| 作者： | Jacobs-MMJ; Hopman-PC; Molenaar-AAA |
| 关键词： | ASPHALTIC-MIXTURES; ABSOLUTE-RATE-THEORY; CRACK-GROWTH; CRACK-PROPAGATION; ACTIVATION-ENERGY |
| 摘要： | In contradiction to the fracture mechanics approach, the fundamental absolute rate theory (ART) model describes the macroscopic behavior of processes on the molecular level. Attention is given to the theoretical background of the ART and its application to describing the crack growth process in asphalt concrete mixes. From the analyses, it is concluded that in the crack propagation phase, three parallel processes are distinguished: cohesive crack growth, adhesive crack growth, and a crack-retardant process. In the crack initiation phase, only cohesive crack growth is present. The difference between the mixes is specified by the free activation energy (Q sub a): increase in crack growth resistance increases the Q sub a value. This Q sub a value, determined from mechanical tests, is close to the energy that bonds the bitumen to the aggregate, determined from chemical tests. |
| 总页数： | Transportation Research Record. 1996. (1535) pp22-28 (6 Fig., 9 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- BINDER CHARACTERIZATION AND EVALUATION BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY.
- BINDER CHARACTERIZATION AND EVALUATION. VOLUME 1.
- Liquid Resins With Low VOC Emissions
- IMPROVED LOW-TEMPERATURE FRACTURE PERFORMANCE FOR RUBBER-MODIFIED ASPHALT BINDERS.
- BIBLIOGRAPHIES FOR PHYSICAL PROPERTIES OF ASPHALT CEMENT.
- Transit: Planning, Management and Maintenance, Technology, Marketing and Fare Policy, and Capacity and Quality of Service. 2005.
检索历史
应用推荐
