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Title SHRINKAGE OF LATEX-MODIFIED AND MICROSILICA CONCRETE OVERLAYS
Accession No 00964827
Authors Buchanan, P M; Mokarem, D W; Weyers, R E; Sprinkel, M M
Journal Title Transportation Research Record information No. 1834
Corp. Authors
/ Publisher		 Transportation Research Board information
Publication Date   20030000
Description p. 33-39; Figures(7); References(6); Tables(5)
Languages English
Abstract Shrinkage performance was examined of Virginia Department of Transportation-approved latex-modified and microsilica concrete overlay mixtures. Research was conducted on both field-sampled and laboratory-fabricated restrained and unrestrained specimens. From crack and delamination surveys of sampled bridge decks and laboratory test results, a shrinkage performance-based specification for the Virginia Department of Transportation was developed. There was no significant difference between the unrestrained shrinkage values of latex-modified and microsilica concrete overlay mixtures for the specified time periods. Restrained microsilica concrete specimens generally cracked earlier and more frequently than restrained latex-modified concrete specimens. However, the bridge deck crack and delamination surveys show that conditions and quality of construction and type and frequency of traffic may have a greater effect on cracking than the overlay material.
Supplemental
Information		 This paper appears in Transportation Research Record No. 1834, Concrete 2003.
TRT Terms Bridge decks information; Concrete overlays information; Construction information; Cracking information; Delamination information; Field studies information; Laboratory tests information; Latex modified concrete information; Performance based specifications information; Quality control information; Shrinkage information; Traffic information
Other Terms Microsilica concrete
Subject Areas H32 CEMENT AND CONCRETE; H25 STRUCTURES DESIGN AND PERFORMANCE; I32 Concrete; I24 Design of Bridges and Retaining Walls
ISBN 0309085683
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