00607736

Component

http://onlinepubs.trb.org...trr/1990/1286/1286-017.pdf

https://scholar.google.co...ttle&publication_year=1990

Laboratory fatigue testing of asphalt concrete can be used to predict field performance. The introduction of a shift factor is necessary to account for the effects of residual stresses and healing that occur in the field but do not occur in the laboratory. In this study the healing mechanism in asphalt concrete is investigated. A theoretical hypothesis for the shift factor and a new approach to characterizing the toughness of paving mixtures based on the J-integral concept are also introduced. The shift factor is assumed to consist of the combined effect of a strain recovery component and crack recovery component. The two components can be determined from simple laboratory tests, including stress relaxation, beam fatigue, and the overlay tests. The fracture mechanics approach, the J*, is based on the path-independent J integral, which can be defined as the energy released per unit area of crack extension. The J* parameter is adopted to characterize material toughness.

This paper appears in Transportation Research Record No. 1286, Design and Evaluation of Rigid and Flexible Pavements 1990. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01411074

p. 173-183

1990

Transportation Research Record

0309050707

Figures (9) ; Photos (3) ; References (13) ; Tables (3)

Asphalt concrete; Fatigue tests; Forecasting; Fracture mechanics; Health care; Laboratory tests; Mechanical relaxation; Medical treatment; Performance; Residual stress; Theory; Toughness

Field performance; Healing

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

TRIS, TRB, ATRI

Apr 30 1991 12:00AM

• AASHTO FLEXIBLE PAVEMENT DESIGN METHOD: FACT OR FICTION?
• AGGREGATE INTERLOCK: A PURE-SHEAR LOAD TRANSFER MECHANISM
• ASSESSMENT OF DAMAGE CAUSED TO PAVEMENTS BY HEAVY TRUCKS IN NEW ENGLAND
• COMPUTER SIMULATION OF LOAD EQUIVALENCE FACTORS
• CONTROL OF FAULTING THROUGH JOINT LOAD TRANSFER DESIGN
• EFFECT OF LANE WIDENING ON LATERAL DISTRIBUTION OF TRUCK WHEELS
• EVALUATION OF THE SUBBASE DRAG FORMULA BY CONSIDERING REALISTIC SUBBASE FRICTION VALUES
• EVALUATION OF VARIABLES AFFECTING FLEXIBLE PAVEMENT THAWING FOR TIMING SPRING LOAD RESTRICTIONS
• EXTENSION OF LOAD EQUIVALENCY FACTORS FOR VARIOUS PAVEMENT CONDITIONS
• FATIGUE DAMAGE PROPERTIES OF ASPHALTIC CONCRETE PAVEMENTS
• FIELD INVESTIGATION OF PUNCHOUT DISTRESS IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENT IN ILLINOIS
• FIELD PERFORMANCE AND EVALUATION OF THIN BONDED OVERLAYS
• HEAVILY LOADED TRAILERS: AN APPROACH TO EVALUATE THEIR INTERACTION WITH ASPHALT CONCRETE PAVEMENTS
• INFLUENCE OF AXLE GROUP SPACING ON PAVEMENT DAMAGE
• INTEGRATED COMPUTER MODEL TO ESTIMATE MOISTURE AND TEMPERATURE EFFECTS BENEATH PAVEMENTS
• MECHANISTIC DESIGN CONSIDERATIONS FOR PUNCHOUT DISTRESS IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENT
• MICH-PAVE: A NONLINEAR FINITE ELEMENT PROGRAM FOR ANALYSIS OF FLEXIBLE PAVEMENTS
• OVERLAY DESIGN METHOD FOR FLEXIBLE PAVEMENTS IN ARIZONA
• PREDICTION OF DAMAGE TO FLEXIBLE PAVEMENTS IN SEASONAL FROST AREAS
• PRESTRESSED CONCRETE PAVEMENT: INSTRUMENTATION, BEHAVIOR, AND ANALYSIS OF HORIZONTAL MOVEMENTS
• PROBABILISTIC MODELING OF FLEXIBLE PAVEMENTS
• THAW WEAKENING OF PAVEMENT STRUCTURES IN SEASONAL FROST AREAS
• VALIDATION OF CONCRETE PAVEMENT RESPONSES USING INSTRUMENTED PAVEMENTS