| contributor author | Yongqi Li | |
| contributor author | John B. Metcalf | |
| date accessioned | 2017-05-08T21:17:42Z | |
| date available | 2017-05-08T21:17:42Z | |
| date copyright | August 2004 | |
| date issued | 2004 | |
| identifier other | %28asce%290899-1561%282004%2916%3A4%28306%29.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/45946 | |
| description abstract | It is widely known that pavement fatigue life is often greater than that predicted based on laboratory bending beam or indirect tensile fatigue tests. Among many factors contributing to this difference, the effect of sample dimensions on fatigue life can be significant due to the multiphase nature of asphalt concrete. In this research, fatigue tests were conducted on asphalt slabs, which realistically simulate the fatigue cracks in pavements, to investigate crack initiation and propagation. The fatigue crack at the underside of asphalt slabs was identified as a semielliptical surface crack, which is the same type of fatigue crack found in pavements. A three-dimensional finite-element analysis was conducted to evaluate the stress intensity factor. Paris’s law was used to characterize the crack propagation rate. The fatigue crack initiation life and propagation life determined from this research were compared with those calculated using the Strategic Highway Research Program existing parameters and equation. It was found that the two results are significantly different. The factors that may contribute to this difference were discussed. | |
| publisher | American Society of Civil Engineers | |
| title | Fatigue Characteristics of Asphalt Concrete from Asphalt Slab Tests | |
| type | Journal Paper | |
| journal volume | 16 | |
| journal issue | 4 | |
| journal title | Journal of Materials in Civil Engineering | |
| identifier doi | 10.1061/(ASCE)0899-1561(2004)16:4(306) | |
| tree | Journal of Materials in Civil Engineering:;2004:;Volume ( 016 ):;issue: 004 | |
| contenttype | Fulltext | |
