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Effect of Construction Quality, Temperature, and Rutting on Initiation of Top-Down Cracking.
| 题名： | Effect of Construction Quality, Temperature, and Rutting on Initiation of Top-Down Cracking. |
| 作者： | de-Freitas-Elisabete-Fraga; Pereira-Paulo; Picado-Santos-Luis; Papagiannakis-AThomas |
| 关键词： | Asphalt-mixtures; Dissipation-; Fatigue-life; Fatigue-tests; Hot-mix-asphalt; Laboratory-tests; Statistical-analysis |
| 摘要： | A fatigue endurance limit has been postulated to exist in hot-mix asphalt pavement performance. It cannot be observed and studied with the use of traditional phenomenological approaches as seen by the totally different fatigue behavior at low strain-damage levels close to the fatigue endurance limit. The ratio of dissipated energy change succeeds in defining and investigating the existence of a fatigue endurance limit with a unique relationship between plateau value (PV) and fatigue life (Nf), regardless of strain-damage levels, mixture types, loading modes, and other testing conditions. To determine a fatigue endurance limit requires an extraordinarily long time to conduct testing. This paper applied the PV to the study of a fatigue endurance limit to validate a shortened laboratory testing procedure. Statistical analysis shows that the shortened test can predict the PV with sufficient accuracy. By applying the validated relationship between PV and Nf, the extremely long fatigue life under low strain-damage condition can be predicted without performing millions of loading cycles. |
| 总页数： | Transportation Research Record: Journal of the Transportation Research Board. 2005. (1929) pp165-173 (6 Fig., 4 Tab., 24 Ref.) |
| 报告类型： | 科技报告 |
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