00985876

Component

https://doi.org/10.3141/1896-10

http://scholar.google.com...+Kim&publication_year=2004

A study of fatigue-cracking mechanisms in asphalt pavements used the finite-element program VECD-FEP++. This program employs the viscoelastic continuum damage model for the asphalt layer and a nonlinear elastic model for unbound layers. Both bottom-up and top-down cracks are investigated by taking several important variables, such as asphalt layer thickness, layer stiffness, pressure distribution under loading, and load level applied on the pavement surface, into account. The cracking mechanisms in various pavement structures under different loading conditions are studied by monitoring a damage contour. Preferred conditions for top-down cracking were identified with the results from this parametric study. The conjoined damage contours in thicker pavements suggest that a through-the-thickness crack may develop as the bottom-up and top-down cracks propagate simultaneously and coalesce; that idea supports observations from field cores and raises the question of the validity of traditional fatigue performance models that account for the growth of the bottom-up cracking only.

This paper appears in Transportation Research Record No. 1896, Pavement Design and Accelerated Testing 2004.

00985866

English

p. 96-106

2004

Transportation Research Record

0309094895

Figures (10) ; References (20) ; Tables (1)

Asphalt pavements; Computer programs; Fatigue (Mechanics); Finite element method; Loads; Pavement cracking; Stiffness; Thickness

Bottom-up cracking; Pressure distribution; Top-down cracking

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Feb 10 2005 12:00AM

• A 9-YEAR EVALUATION OF FIELD CRACKING AND RUTTING PERFORMANCE OF SPS-9 SUPERPAVE EXPERIMENT
• ACCELERATED PAVEMENT TESTING EVALUATION OF THE STRUCTURAL CONTRIBUTION OF FULL-DEPTH RECLAMATION MATERIAL STABILIZED WITH FOAMED ASPHALT
• CALIBRATION OF MECHANISTIC-EMPIRICAL PERFORMANCE MODEL FOR CONTINUOUSLY REINFORCED CONCRETE PAVEMENT PUNCH-OUTS
• COMPUTER-BASED MULTIMEDIA PAVEMENT TRAINING TOOL FOR SELF-DIRECTED LEARNING
• DEVELOPING SOFTWARE FOR ELASTIC ANALYSIS OF PAVEMENT STRUCTURE RESPONSES TO VERTICAL AND HORIZONTAL SURFACE LOADINGS
• DEVELOPMENT OF A MECHANISTIC-EMPIRICAL STRUCTURAL DESIGN PROCEDURE FOR CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS
• EARLY-AGE CURLING AND WARPING BEHAVIOR: INSIGHTS FROM A FULLY INSTRUMENTED TEST-SLAB SYSTEM
• FATIGUE-TRANSFER FUNCTIONS: HOW DO THEY COMPARE?
• GUIDE FOR INVESTIGATING AND REMEDIATING DISTRESS IN FLEXIBLE PAVEMENTS: CALIFORNIA DEPARTMENT OF TRANSPORTATION'S NEW PROCEDURE
• INTERLAYER AND DESIGN CONSIDERATIONS TO RETARD REFLECTIVE CRACKING
• LABORATORY, PROTOTYPE, AND IN-SERVICE ACCELERATED PAVEMENT TESTING TO MODEL PERMANENT DEFORMATION
• MECHANISTIC-EMPIRICAL MODEL TO PREDICT TRANSVERSE JOINT FAULTING
• MULTILAYER BOUNDARY-ELEMENT METHOD FOR EVALUATING TOP-DOWN CRACKING IN HOT-MIX ASPHALT PAVEMENTS
• ONE-WAY AND TWO-WAY DIRECTIONAL HEAVY-VEHICLE SIMULATOR LOADING: EFFECTS ON RUTTING IN HOT-MIX ASPHALT PAVEMENTS
• PAVEMENT RESPONSES DUE TO HARD LANDINGS OF HEAVY AIRCRAFT
• PERFORMANCE OF COLD IN-PLACE RECYCLING IN NEVADA
• SIMPLIFIED DESIGN OF ROLLER-COMPACTED CONCRETE COMPOSITE PAVEMENT
• THICKNESS TOLERANCE FOR PORTLAND CEMENT CONCRETE PAVEMENTS
• TIRE-INDUCED SURFACE STRESSES IN FLEXIBLE PAVEMENTS
• USING LONG-TERM PAVEMENT PERFORMANCE DATA TO PREDICT SEASONAL VARIATION IN ASPHALT CONCRETE MODULUS