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Title:

EVALUATION OF MOISTURE SUSCEPTIBILITY OF ASPHALT MIXTURES CONTAINING BOTTOM ASH

Accession Number:

00965405

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Public/Blurbs/153501.aspx

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Order URL: http://worldcat.org/isbn/0309085667

Abstract:

Bottom ash, as a by-product of coal-fired electric power plants, has recently been used in constructing transportation facilities. However, the use of bottom ash in asphalt mixtures is still in an early stage. The moisture resistance of asphalt mixtures containing bottom ash, which has not been adequately researched, is investigated in this study. Eight asphalt mixtures produced with one type of asphalt cement, two types of aggregate, three sources of bottom ash, and lime additive were evaluated using the principles in AASHTO T283. Analysis of test data indicated that granite mixtures had higher tensile strength values than did limestone mixtures in dry conditions. Addition of lime or bottom ash did not substantially change these values. All mixtures tested met the Superpave volumetric mix design requirement of tensile strength ratio (TSR) after one freeze-thaw cycle. The addition of lime significantly improved the moisture resistance of the asphalt mixtures as measured by the TSR. With lime addition, aggregate type, bottom ash addition, and bottom ash source were all insignificant with respect to TSR. On the basis of TSR rate (TSRR), the addition of lime significantly improved the moisture resistance of the asphalt mixtures subjected to multiple freeze-thaw cycles. Without lime addition, bottom ash played a role similar to that of lime in improving the TSRR for the materials tested.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1832, Bituminous Paving Mixtures 2003.

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Zeng, M
Ksaibati, K

Pagination:

p. 25-33

Publication Date:

2003

Serial:

Transportation Research Record

Issue Number: 1832
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309085667

Features:

Figures (7) ; References (13) ; Tables (4)

Subject Areas:

Highways; Materials; I31: Bituminous Binders and Materials

Files:

TRIS, TRB, ATRI

Created Date:

Nov 4 2003 12:00AM

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