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Title: APPLICABILITY OF RESILIENT CONSTITUTIVE MODELS OF GRANULAR MATERIAL FOR UNBOUND BASE LAYERS
Accession Number: 00641442
Record Type: Component
Availability: Find a library where document is available Abstract: Analytical design methods for pavements require the determination of the resilient behavior of each layer. Granular material behavior under traffic loading is nonlinear and stress path dependent. Because the deformation characteristics of the material are significantly affected by stress magnitude and path, stress-strain behavior must be modeled accurately. A wide range of graded granular material types was selected to assess the applicability of stress-strain models. A repeated load triaxial test apparatus, which can cycle deviatoric and cell pressure, was used to test a variety of stress paths for furnace bottom ash, graded washed river sand, sand and gravel, Fontainebleu sand, limestone, and gritstone. Linear and nonlinear regression programs were used to obtain the parameters for five different models. The results indicated that there is no unique model to represent the granular material behavior under all circumstances. Elhannani's model can be used for predicting the response to cyclic deviatoric stress with cyclic cell pressure test data. Using K-theta and Pappin and Brown models, approximate predictions can be made of axial stiffness under the cycling of both stresses using parameters obtained from more-simple only-cyclic deviatoric stress test data.
Supplemental Notes: This paper appears in Transportation Research Record No. 1406, Construction Robotics and Automation, and Foundations Engineering. 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
Monograph Title: Construction robotics and automation, and foundations engineering Monograph Accession #: 01403255
Language: English
Authors: Karasahin, MDawson, A RHolden, J TPagination: p. 98-107
Publication Date: 1993
Serial: ISBN: 0309055539
Features: Figures
(9)
; References
(20)
; Tables
(1)
TRT Terms: Subject Areas: Data and Information Technology; Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I42: Soil Mechanics
Files: TRIS, TRB, ATRI
Created Date: Jan 25 1994 12:00AM
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