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Title:

RESILIENT AND PLASTIC BEHAVIOR OF CLASSIFIER TAILINGS AND FLY ASH MIXTURES

Accession Number:

00646005

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309055660

Abstract:

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.

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

Monograph Accession #:

01398731

Language:

English

Authors:

Lee, Seung W
Fishman, K L

Pagination:

p. 51-59

Publication Date:

1993

Serial:

Transportation Research Record

Issue Number: 1418
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309055660

Features:

Figures (13) ; References (17) ; Tables (1)

Uncontrolled Terms:

Triaxial tests

Old TRIS Terms:

Subject Areas:

Design; Geotechnology; Highways; Materials; Pavements; I35: Miscellaneous Materials

Files:

TRIS, TRB

Created Date:

Apr 4 1994 12:00AM

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