RESILIENT AND PLASTIC BEHAVIOR OF CLASSIFIER TAILINGS AND FLY ASH MIXTURES
The resilient modulus and plastic deformation of two materials, currently considered waste products, were studied. The first material is fly ash, which is a waste product of coal combustion. The second is classifier tailings, a fine-grained material that is a by-product of aggregate processing. Results from cyclic triaxial testing used to study the resilient and plastic response of fly ash, classifier tailings, and a mixture of the two materials are presented. By itself neither material exhibits sufficient stiffness to realize any advantage in pavement construction. However, the resilient modulus of a mixture of the two materials is higher and plastic deformation lower than that of either material considered alone. Since no previously published experience with this material mixture exists, it is considered a new type of geomaterial. Historically, because of difficulties associated with cyclic triaxial testing, empirical formulas have been used to estimate resilient modulus. Therefore, the usefulness of applying existing empirical relations to the materials investigated to estimate resilient modulus is explored. Mechanistic-based pavement analyses were performed to predict pavement lives for flexible pavements having a subgrade of fly ash, classifier tailings, or a mixture of the two. The benefits of the material mixture in improving the pavement performance over that of either of its constituents are demonstrated.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309055660
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Supplemental Notes:
- This paper appears in Transportation Research Record No. 1418, Performance-Related Testing and Evaluation of Characteristics of Aggregates and New Geomaterials. 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:
- Lee, Seung W
- Fishman, K L
- Publication Date: 1993
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 51-59
- Monograph Title: Performance-related testing and evaluation of characteristics of aggregates and new geomaterials
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Serial:
- Transportation Research Record
- Issue Number: 1418
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Blends; Cyclic tests; Equations; Fly ash; Forecasting; Mechanical analysis; Mechanistic design; Modulus of resilience; Pavements; Performance evaluations; Plastic deformation; Service life; Subgrade materials; Triaxial shear tests
- Uncontrolled Terms: Triaxial tests
- Old TRIS Terms: Classifier tailings; Empirical equations; Pavement life
- Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; I35: Miscellaneous Materials;
Filing Info
- Accession Number: 00646005
- Record Type: Publication
- ISBN: 0309055660
- Files: TRIS, TRB
- Created Date: Apr 4 1994 12:00AM