00207626

Component

http://onlinepubs.trb.org...s/hrr/1973/466/466-010.pdf

THE CONCEPT OF AND A PROCEDURE FOR CONDUCTING A DETERMINISTIC SENSITIVITY ANALYSIS TO ESTABLISH THE RELATIVE INFLUENCE OF MATERIALS CHARACTERIZATION ON THE PREDICTION OF THE FATIGUE PERFORMANCE OF ASPHALT CONCRETE PAVEMENTS ARE PRESENTED. THE EFFECTS OF ISOTROPIC LINEAR-ELASTIC MATERIALS CHARACTERIZATION ON FATIGUE PERFORMANCE PREDICTION ARE COMPARED WITH THE EFFECTS ASSOCIATED WITH ENVIRONMENT, AND FATIGUE CRITERIA VARIABILITY. THE RESULTS OF THE STUDY HAVE PERMITTED AN EVALUATION OF THE ADEQUACY OF AN ISOTROPIC LINEAR-ELASTIC CHARACTERIZATION OF THE THREE MOST COMMON TYPES OF MATERIALS USED IN FLEXIBLE PAVEMENT CONSTRUCTION (ASPHALT CONCRETE, UNTREATED GRANULAR BASE COURSE, AND SUBGRADE) FOR THREE TYPICAL STRUCTURAL SECTIONS AND FOR A RANGE OF TEMPERATURES. FOR SEVERAL SPECIFIC STRUCTURAL SECTIONS AND ENVIRONMENTS, IT WAS FOUND THAT IMPROVED MATERIAL CHARACTERIZATION BEYOND ISOTROPIC LINEAR ELASTICITY COULD SIGNIFICANTLY REDUCE THE UNCERTAINTY (VARIATION) OF FATIGUE LIFE PREDICTION. HOWEVER, BOTH THE CONSTRUCTION CONTROL OF AIR VOIDS IN THE ASPHALT CONCRETE AND THE INHERENT VARIABILITY IN THE EXPERIMENTAL DEFINITION OF THE FATIGUE CRITERIA THEMSELVES ALWAYS CONTRIBUTED MORE UNCERTAINTY TO THE PREDICTION OF FATIGUE PERFORMANCE THAN THE UNCERTAINTY CONTRIBUTION ASSOCIATED WITH LINEAR ISOTROPIC MATERIALS CHARACTERIZATION.

Publication of this paper sponsored by Committee on Theory of Pavement Design. 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.

01410377

pp 139-152

1973

Highway Research Record

52nd Annual Meeting of the Highway Research Board

0309022509

Digital/other

Figures (8) ; References (12) ; Tables (2)

Asphalt concrete; Fatigue (Mechanics); Flexible pavements; Forecasting; Isotropy; Linear elasticity; Materials selection; Pavement performance

Fatigue life

Highways; Pavements

TRIS, TRB

May 15 1974 12:00AM

• CORRELATION OF KENTUCKY CBR'S AND SOIL SUPPORT VALUES
• ESTIMATION OF 18-KIP EQUIVALENT ON PRIMARY AND INTERSTATE ROAD SYSTEMS IN VIRGINIA
• FINITE-ELEMENT ANALYSIS OF CONCRETE SLABS AND ITS IMPLICATIONS FOR RIGID PAVEMENT DESIGN
• FRACTURE (ULTIMATE STRENGTH) ANALYSIS OF ASPHALT PAVEMENT LAYERS RESULTING FROM TRAFFIC LOADING
• LAYER ANALYSIS OF THE BRAMPTON TEST ROAD AND APPLICATION TO PAVEMENT DESIGN
• PAVEMENT FEEDBACK DATA SYSTEM
• PAVEMENT SLABS RESTING ON ELASTIC FOUNDATION
• PRESTRESSED CONCRETE HIGHWAY PAVEMENT AT DULLES INTERNATIONAL AIRPORT
• PROBABILISTIC CONCEPTS AND THEIR APPLICATIONS TO AASHO INTERIM GUIDE FOR DESIGN OF RIGID PAVEMENTS
• RELATIVE EFFECTS OF STRUCTURAL VARIABLES ON THE PERFORMANCE OF CONTINUOUS PAVEMENTS
• STIFFNESS HISTORY OF ASPHALT CONCRETE SURFACES IN ROADS
• THE PRINCIPLE OF SUPERPOSITION IN PAVEMENT ANALYSIS