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Title: EVALUATION OF PENETRATING CORROSION INHIBITOR SYSTEM
Accession Number: 00810828
Record Type: Component
Availability: Find a library where document is available Abstract: Sixteen reinforced slabs were cast with admixed chloride contents of 0.0, 0.35, 0.71, 1.4, 2.8, and 5.7 kg chloride per cubic meter of concrete. The slabs contained five isolated steel reinforcing bars with a 50-mm cover depth and were 1181 x 1067 x 216 mm. The slabs were stored at an outdoor exposure site in Blacksburg, Virginia, for 7 years before being treated with an alcohol-amine corrosion inhibitor. Treatments were three applications at a rate of 2.46 L/sq m over the entire surface area or over a center strip that was perpendicular to the bar direction. The concrete mixture had a water-to-cement ratio of 0.45 and a 28-day compressive strength of 34.5 MPa. Corrosion assessment measurements before treatment included acid- and water-soluble chloride contents and corrosion potentials and rates. Corrosion potentials and rates were monitored for 1 year after treatment, and about 9 months after treatment the depth of inhibitor penetration was measured qualitatively (color indicator test) and quantitatively (parts per million). Results indicated that the inhibitor penetrated to the bar depth, but there was no significant difference in the corrosion potentials and rates between the treated and the untreated slabs or areas.
Supplemental Notes: 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 #: 00810814
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Bryant Jr, J WWeyers, R EBrown, M CWeyers, R MPagination: p. 127-135
Publication Date: 2001
Conference:
Ninth Maintenance Management Conference
Location:
Juneau, Alaska ISBN: 0309067472
Media Type: Digital/other
Features: Figures
(10)
; References
(4)
; Tables
(2)
TRT Terms: Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I60: Maintenance
Files: TRIS, TRB, ATRI
Created Date: Apr 27 2001 12:00AM
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