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Title: Simple Model for Pavement Damage
Accession Number: 01005177
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: A simple phenomenological damage model based on the number of load applications, the critical response, and the material modulus was used with three sets of experimental data: (a) the decrease in the modulus of an asphalt concrete (AC) under laboratory, direct tension fatigue testing; (b) the decrease in the modulus of a pozzolan-lime-stabilized sand under accelerated loading in a full-scale pavement testing facility; and (c) the increase in the permanent strain at three levels of two subgrade materials, also under full-scale accelerated loading. The model is shown to be capable of describing the damage reasonably well for all three cases, though with some limitations. For the direct tension tests with AC, the rate of damage was underpredicted for two of six samples under controlled stress testing, whereas the prediction for all 10 controlled strain tests was good. For freeze-thaw conditions, the model for permanent strain in the subgrade also tended to underpredict the damage rate. The simple damage model may be useful for incremental-recursive pavement design or for pavement management systems.
Monograph Title: Pavement Rehabilitation, Strength and Deformation Characteristics, and Surface Properties 2005 Monograph Accession #: 01005160
Language: English
Authors: Ullidtz, PerPagination: pp 128-137
Publication Date: 2005
ISBN: 0309093775
Media Type: Print
Features: Figures
(12)
; References
(7)
; Tables
(2)
TRT Terms: Uncontrolled Terms: Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: Oct 3 2005 4:31PM
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