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Title: CHLORIDE PERMEABILITIES OF RIGID CONCRETE BRIDGE DECK OVERLAYS
Accession Number: 00494991
Record Type: Component
Availability: Find a library where document is available Abstract: A study of the chloride permeability of rigid concrete bridge deck overlays was conducted during the 1987 construction season. A total of thirteen latex-modified concrete (LMC) overlays, ten superplasticized dense concrete (SDC) overlays, and two condensed silica fume concrete (CSFC) overlays, were investigated. Concretes were tested both by the rapid chloride permeability test and by 90-day chloride ponding. Results of this study indicate that, of the three materials tested, CSFC is the most impermeable to chloride ions. Followng CSFC, in order of increasing permeability, are LMC and SDC. Although all materials show a decrease in permeability with age, chloride ions slowly penetrate these materials and can build up to substantial levels over long periods of time. For newly constructed overlays, there was a good correlation between results of the rapid chloride permeability and 90-day ponding tests.
Supplemental Notes: This paper appears in Transportation Research Record No. 1234, Concrete and Construction: New Developments and Management. 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 Title: Monograph Accession #: 01414220
Authors: WHITING, DDziedzic, WPagination: p. 24-29
Publication Date: 1989
Serial: ISBN: 0309049504
Features: Figures
(9)
; References
(20)
TRT Terms: Old TRIS Terms: Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete
Files: TRIS, TRB, ATRI
Created Date: Jun 30 1990 12:00AM
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