00607730

Component

http://onlinepubs.trb.org...trr/1990/1286/1286-011.pdf

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

A rational overlay design method for flexible pavements in Arizona, which includes roughness, fatigue, and plastic deformation models, has been developed. The roughness model is based on an analysis of the change in roughness because of overlay and the rate of change in roughness after overlay for typical Arizona roads. The fatigue model uses a shift factor to adjust existing fatigue criteria for the rate of crack development of pavements in the state. The plastic deformation model ensures that the overlay is thick enough so that expected traffic loads will not induce significant plastic deformations in underlying layers. The three design models are incorporated into a microcomputer program for computing the optimum overlay thickness, estimating the remaining life of an existing pavement, evaluating the life of a user-specified overlay, and performing economic analyses. Twenty in-service pavement sites were selected from Arizona highways covering various geographical and environmental regions, soil types, pavement conditions, and traffic volumes. Nondestructive tests were performed on these sites using the falling weight deflectometer at several stress levels, as well as Dynaflect tests. The layer elastic moduli were back calculated and adjusted for temperature. Asphalt concrete cores and undisturbed subgrade samples were collected and tested in the lab for modulus and other properties. The overlay design procedure has been verified with typical pavement sections in the state. Although the procedure in its current form applies to conditions in Arizona primarily, the design concepts can be used with conditions in other states.

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. 112-122

1990

Transportation Research Record

0309050707

Figures (9) ; References (16) ; Tables (1)

Backcalculation; Computer programs; Core samples; Deflection; Design methods; Dynaflect; Economic analysis; Estimating; Falling weight deflectometers; Fatigue (Mechanics); Flexible pavements; Laboratory tests; Microcomputers; Modulus of elasticity; Nondestructive tests; Optimization; Overlays (Pavements); Pavements; Plastic deformation; Roughness; Service life; Thickness; Undisturbed samples

Design models

Data and Information Technology; Design; Economics; 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 FRACTURE HEALING ON LABORATORY-TO-FIELD SHIFT FACTOR
• 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
• 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