CRACK DEVELOPMENT IN PAVEMENTS
THIS PAPER DISCUSSES METHODS OF ANALYZING CRACK DEVELOPMENT IN PAVEMENTS SUBJECTED TO RANDOM REPETITIONS OF VARIOUS LOADS IN VARIABLE OPERATING CONDITIONS. THE APPROACHES BASED ON MINER'S LAW PRESENT THE ADVANTAGE OF SIMPLICITY. THEIR PRINCIPAL LIMITATIONS ARE THAT THE PREDICTED FATIGUE LIFE IS GENERALLY A FUNCTION OF GEOMETRY AND LOADING CONDITIONS. THE DATA OBTAINED IN THE LABORATORY CONSTITUTE A GOOD APPROXIMATION TO LIMITED TYPES OF PAVEMENT SYSTEMS. THIS LAW CAN BE MODIFIED TO ACCOUNT FOR TEMPERATURE VARIATIONS AND VARIATIONS IN LOADING SPECTRUM AND MATERIAL PROPERTIES. THE APPROACHES BASED ON THE CONCEPTS OF FRACTURE MECHANICS CAN BE VIEWED AS A GENERALIZATION OF MINER'S LAW. ALTHOUGH THE LATTER BASES THE PREDICTION OF CRACK DEVELOPMENT ON THE INITIAL CONFIGURATION OF THE SYSTEM, THE FRACTURE MECHANICS APPROACH INCORPORATES THE CHANGES OF CONFIGURATION (I.E., GEOMETRY). THE APPLICATION OF THIS APPROACH TO LINEAR ELASTIC SYSTEMS CAN ALSO BE VIEWED AS A SPECIAL CASE OF A GENERAL APPROACH INCLUDING TIME-DEPENDENT AND NONLINEAR MATERIAL PROPERTIES. A SIMPLIFIED EXTENSION TO VISCOELASTIC SYSTEMS IS ALSO DISCUSSED. THE MODIFIED MINER'S LAW IS PREFERRED IN THE SHORT RANGE BECAUSE OF ITS SIMPLICITY AND THE AVAILABILITY OF DATA, WHEREAS THE APPROACHES BASED ON FRACTURE MECHANICS CONCEPTS ARE PREFERRED IN THE LONG RANGE BECAUSE OF THEIR COMPLETENESS.
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Availability:
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Characteristics of Aggregates of Bituminous Materials. 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
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Authors:
- Soussou, Joseph E
- Moavenzadeh, Fred
- Publication Date: 1973
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 16-29
- Monograph Title: Asphalt and asphalt mix technology
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Serial:
- Highway Research Record
- Issue Number: 468
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Elasticity (Mechanics); Fatigue (Mechanics); Forecasting; Laws; Mathematical models; Pavement cracking; Viscoelasticity
- Subject Areas: Highways; Law; Materials;
Filing Info
- Accession Number: 00211885
- Record Type: Publication
- ISBN: 0309022541
- Files: TRIS, TRB
- Created Date: May 7 1974 12:00AM