CHARACTERIZATION OF SATURATED GRANULAR BASES UNDER REPEATED LOADS
The behavior of typical granular materials with different gradation was investigated under saturated, undrained, repeated triaxial loading conditions. Of particular interest is the comparative behavior of open-graded and dense-graded base courses and the influence of fines content on the dynamic response. The effect of aggregate gradation on the cyclic stress-strain behavior, pore pressure, damping, resilient modulus, compressibility, and permeability is investigated. Results indicate that saturated granular materials will develop excess pore water pressure under undrained repeated triaxial loading. This could lead to a decrease in resilient modulus and a potential increase in volume compressibility. Open-graded aggregates are more resistant to pore pressure buildup than dense-graded aggregates and are therefore less likely to induce damage in pavements under saturated conditions. In this respect, the estimated damage per repetition could be as much as 70 to 100 times more for pavements with dense-graded bases.
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1369, Advances in Geotechnical 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
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Authors:
- Raad, Lutfi
- Minassian, George H
- Gartin, Scott
- Publication Date: 1992
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 73-82
- Monograph Title: Advances in geotechnical engineering
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Serial:
- Transportation Research Record
- Issue Number: 1369
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Accelerated tests; Aggregate gradation; Base course (Pavements); Compressibility; Damping (Physics); Defects; Deformation curve; Dense graded aggregates; Dynamic loads; Fines (Materials); Granular materials; Modulus of resilience; Open graded aggregates; Pavements; Percent saturation; Permeability; Pore water pressures; Repeated loads; Saturated soils
- Uncontrolled Terms: Dynamic response; Pavement damage; Undrained conditions
- Subject Areas: Geotechnology; Highways; Pavements; I42: Soil Mechanics;
Filing Info
- Accession Number: 00627119
- Record Type: Publication
- ISBN: 0309054109
- Files: TRIS, TRB, ATRI
- Created Date: Mar 18 1993 12:00AM