Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of aging on asphalt mixture and pavement performance
Highlights The cyclic fatigue analysis results show deterioration in performance in both DR and Sapp. Aging makes the material stiffer, more brittle, and more susceptible to cracking. Pavement performance due to aging must consider both traffic and thermal loading. Increased material stiffness decreases traffic stresses but increases thermal stresses. The competition between increased stiffness and decreased durability due to aging is critical.
Abstract This study investigates the effects of long-term aging on pavement performance under realistic traffic and thermal conditions. Using the NCHRP 09-54 aging procedure, a systematic study of the effects of aging on asphalt mixture linear viscoelastic and fatigue properties was conducted. The computational engine of FlexPAVE™ V1.1was modified to run more realistic pavement performance simulations. Results suggest that the effect of aging on pavement performance is evident only when simulations employ more realistic traffic and climatic conditions. In the absence of thermal conditions, the effect of changes in mixture properties on pavement performance is not significant.
Effects of aging on asphalt mixture and pavement performance
Highlights The cyclic fatigue analysis results show deterioration in performance in both DR and Sapp. Aging makes the material stiffer, more brittle, and more susceptible to cracking. Pavement performance due to aging must consider both traffic and thermal loading. Increased material stiffness decreases traffic stresses but increases thermal stresses. The competition between increased stiffness and decreased durability due to aging is critical.
Abstract This study investigates the effects of long-term aging on pavement performance under realistic traffic and thermal conditions. Using the NCHRP 09-54 aging procedure, a systematic study of the effects of aging on asphalt mixture linear viscoelastic and fatigue properties was conducted. The computational engine of FlexPAVE™ V1.1was modified to run more realistic pavement performance simulations. Results suggest that the effect of aging on pavement performance is evident only when simulations employ more realistic traffic and climatic conditions. In the absence of thermal conditions, the effect of changes in mixture properties on pavement performance is not significant.
Effects of aging on asphalt mixture and pavement performance
Saleh, Nooralhuda F. (Autor:in) / Keshavarzi, Behrooz (Autor:in) / Yousefi Rad, Farhad (Autor:in) / Mocelin, Douglas (Autor:in) / Elwardany, Michael (Autor:in) / Castorena, Cassie (Autor:in) / Underwood, B. Shane (Autor:in) / Kim, Y. Richard (Autor:in)
19.07.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Aging , Fatigue , Pavement life , FlexPAVE™
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