00676547

Component

http://onlinepubs.trb.org...trr/1994/1449/1449-025.pdf

https://scholar.google.co...czek&publication_year=1994

Asphalt overlays are frequently used to improve the serviceability of a deteriorated concrete pavement. The asphalt overlay has a significant influence on the concrete pavement's behavior and response to loads. Most highway agencies approximate the behavior of composite pavements to that of asphalt or concrete pavements. In fact the 1993 AASHTO design guide suggests that concrete pavement load equivalency factors (LEFs) be used to assess the effects of traffic on composite pavements. This is an approximation and has not been validated with field measurements or realistic analytical procedures. From a structural point of view an asphalt overlay of a concrete pavement should have a significant effect on the response of the composite pavement. A logical approach for the development of composite pavement LEFs is presented. These LEFs were developed for a study of permissible overloads and are based on total deformation, elastic and plastic, at the pavement surface. A three-dimensional dynamic finite-element mesh (3D-DFEM) method of analysis was used to analyze the composite pavements. The 3D-DFEM was verified in two steps for asphalt and concrete pavements: first for static, linear elastic analysis and then for dynamic, nonlinear analysis. Moving loads and realistic material models were used in the analysis.

This paper appears in Transportation Research Record No. 1449, Design and Rehabilitation of Pavements. 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

01401288

English

p. 199-208

1994

Transportation Research Record

0309060567

Figures (10) ; References (24) ; Tables (1)

Bituminous overlays; Composite pavements; Concrete pavements; Dynamic tests; Finite element method; Load factor; Mathematical models; Nonlinear systems

Dynamic analysis; Load equivalency factors

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

TRIS, TRB

Apr 10 1995 12:00AM

• ANALYTICAL EVALUATION OF BITUMINOUS OVERLAYS ON FLEXIBLE PAVEMENTS
• DEVELOPMENT OF WEIBULL RELIABILITY FACTORS AND ANALYSIS FOR CALIBRATION OF PAVEMENT DESIGN MODELS USING FIELD DATA
• DYNAMIC FINITE-ELEMENT ANALYSIS OF JOINTED CONCRETE PAVEMENTS
• EFFECT OF PAVEMENT VARIABLES ON AVERAGE JOINT DEFLECTIONS IN EXPERIMENTAL CONCRETE PAVEMENT
• ESTIMATION OF STANDARD DEVIATION OF PREDICTED PERFORMANCE OF FLEXIBLE PAVEMENTS USING AASHTO MODEL
• EVALUATION AND REHABILITATION DESIGN OF I-495 IN DELAWARE
• EVALUATION OF HEAVY LOAD DAMAGE EFFECT ON CONCRETE PAVEMENTS USING THREE-DIMENSIONAL, NONLINEAR DYNAMIC ANALYSIS
• EVALUATION OF HIGHWAY UNDERSEALING PRACTICES OF PORTLAND CEMENT CONCRETE PAVEMENTS
• FACTORS AFFECTING CRACK WIDTH OF CONTINUOUSLY REINFORCED CONCRETE PAVEMENT
• FIELD INVESTIGATIONS OF SELECTED STRATEGIES TO REDUCE REFLECTIVE CRACKING IN ASPHALT CONCRETE OVERLAYS CONSTRUCTED OVER EXISTING JOINTED CONCRETE PAVEMENTS
• FRAMEWORK FOR INCORPORATION OF SPALLING IN DESIGN OF CONCRETE PAVEMENTS
• INFLUENCE FUNCTION APPROACH TO ANALYSIS OF JOINTED PORTLAND CEMENT CONCRETE PAVEMENT
• LOADING AND CURLING STRESS MODELS FOR CONCRETE PAVEMENT DESIGN
• MECHANISTIC EVALUATION OF AASHTO FLEXIBLE PAVEMENT DESIGN EQUATIONS
• MECHANISTIC-EMPIRICAL RIGID PAVEMENT DESIGN FOR NEW YORK STATE
• MODELING PERFORMANCE OF HIGHWAY PAVEMENTS
• NEW PREDICTIVE MODELING TECHNIQUES FOR PAVEMENTS
• OPTIMIZING DESIGN STANDARDS FOR NEW PAVEMENTS USING HIGHWAY DESIGN AND MAINTENANCE STANDARDS MODEL (HDM-III)
• PAVEMENT THICKNESS VARIABILITY AND ITS EFFECT ON DETERMINATION OF MODULI AND REMAINING LIFE
• PERFORMANCE OF UNBONDED CONCRETE OVERLAY PROJECT IN CANADA
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• RATIONAL APPROACH IN APPLYING RELIABILITY THEORY TO PAVEMENT STRUCTURAL DESIGN
• RELIABILITY IN PAVEMENT DESIGN: ISSUES, CONCEPTS, AND SIGNIFICANCE
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• SAWCUT DEPTH CONSIDERATIONS FOR JOINTED CONCRETE PAVEMENT BASED ON FRACTURE MECHANICS ANALYSIS
• SOIL-PROPERTY-BASED SUBGRADE RESILIENT MODULUS ESTIMATION FOR FLEXIBLE PAVEMENT DESIGN
• SPECIFIC ENERGY OF DAMAGE AS FRACTURE CRITERION FOR ASPHALTIC PAVEMENTS
• STRUCTURAL ANALYSIS OF UNBONDED CONCRETE OVERLAYS UNDER WHEEL AND ENVIRONMENTAL LOADS