Thermal cracking of asphalt overlays is a leading cause of pavement deterioration. The thermoelastic response of a multilayered pavement structure is modeled using a transient thermal analysis followed by a quasi-static stress analysis at discrete time intervals using finite element analysis. Numerical analysis of two- and three-dimensional cracking problems is performed. Based on a fracture mechanics approach, the potential of thermal cracks to propagate through the overlay is examined using both a displacement formula and an energy-balance principle. The interaction between multiple cracks and the effect of bond between layers on crack propagation are examined. The proposed numerical methods for analysis of pavement thermal cracking provide a means to characterize and optimize different evolving materials and innovative pavement reinforcement techniques.
Low-Temperature Stresses and Fracture Analysis of Asphalt Overlays
Transportation Research Record
Transportation Research Record: Journal of the Transportation Research Board ; 1539 , 1 ; 132-139
1996-01-01
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Low-Temperature Stresses and Fracture Analysis of Asphalt Overlays
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