Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of Fatigue Performance of Coarse and Fine Graded Asphalt Concrete Mix Employing Viscoelastic Continuum Damage (VECD) Model
During the last two decades, Superpave pavements were built using mostly coarse graded mixes as opposed to fine graded mixes due to the fact that coarse mix requires less asphalt binder than a fine mix while both mixes fulfill the Superpave criteria. Recently, it was observed nationally that the Superpave mixes have poor cracking performances in general. In an effort to examine this issue, this study has investigated the fatigue performance of coarse and fine graded asphalt concrete (AC) mixes. Both fine and coarse mixes were collected from a pavement site NM14, where they were applied side-by-side to construct a 2-lane 2-mile section in each direction. They have identical performance grade binder, RAP content, and aggregate source. Mixes were compacted in the laboratory and samples were tested for dynamic modulus, and four-point bending beam fatigue (BF). The fatigue test data were analyzed by employing the viscoelastic continuum damage model (VECD). The dynamic modulus test result shows that the coarse mix has higher dynamic modulus than that of the fine mix. The beam fatigue test results reveal that coarse mix has better fatigue performance than the fine mix.
Evaluation of Fatigue Performance of Coarse and Fine Graded Asphalt Concrete Mix Employing Viscoelastic Continuum Damage (VECD) Model
During the last two decades, Superpave pavements were built using mostly coarse graded mixes as opposed to fine graded mixes due to the fact that coarse mix requires less asphalt binder than a fine mix while both mixes fulfill the Superpave criteria. Recently, it was observed nationally that the Superpave mixes have poor cracking performances in general. In an effort to examine this issue, this study has investigated the fatigue performance of coarse and fine graded asphalt concrete (AC) mixes. Both fine and coarse mixes were collected from a pavement site NM14, where they were applied side-by-side to construct a 2-lane 2-mile section in each direction. They have identical performance grade binder, RAP content, and aggregate source. Mixes were compacted in the laboratory and samples were tested for dynamic modulus, and four-point bending beam fatigue (BF). The fatigue test data were analyzed by employing the viscoelastic continuum damage model (VECD). The dynamic modulus test result shows that the coarse mix has higher dynamic modulus than that of the fine mix. The beam fatigue test results reveal that coarse mix has better fatigue performance than the fine mix.
Evaluation of Fatigue Performance of Coarse and Fine Graded Asphalt Concrete Mix Employing Viscoelastic Continuum Damage (VECD) Model
Hasan, Md. Mehedi (Autor:in) / Hasan, Md. Amanul (Autor:in) / Tarefder, Rafiqul A. (Autor:in)
International Airfield and Highway Pavements Conference 2019 ; 2019 ; Chicago, Illinois
Airfield and Highway Pavements 2019 ; 216-226
18.07.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Viscoelastic continuum damage (VECD) models for cracking problems in asphalt mixtures
| Online Contents | 2017
Viscoelastic continuum damage (VECD) models for cracking problems in asphalt mixtures
| Taylor & Francis Verlag | 2018