United States Department of Transportation
i
Corrosion Susceptibility of Concrete Exposed to a Marine Environment
-
2004-12-01
[PDF-1013.51 KB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:A study was conducted to evaluate the chloride concentrations of reinforced concrete panels placed in a marine environment and compare their performance to reinforced concrete specimens exposed to cyclic laboratory simulated marine conditions. The panels and specimens were proportioned using corrosion-inhibiting admixtures intended to slow the corrosion process. The corrosion-inhibiting admixtures included Darex Corrosion Inhibitor (DCI), Rheocrete CNI, Rheocrete 222+, FerroGard 901, Xypex Admix C-2000, latex, fly ash, silica fume, and Kryton KIM. The mixtures used to fabricate the field panels were based on the mixtures for the corresponding laboratory specimens. Relevant properties of the field panels are reported, including compressive strength, elastic modulus, Poisson’s ratio, pH, air permeability, and half-cell potential. On average, based on chloride concentrations at 1.0 in. (25 mm), approximately 1.2 laboratory simulated cycles were equivalent to one year of field exposure for the control, DCI, FerroGard 901 and latex-modified panels. An average of 2.4 laboratory simulated cycles was equal to one year of field exposure for the silica fume panels. The chloride concentrations at various depths in the panel cover concrete were also predicted using the computer program Life-365. In most cases, the default values assumed by this program over-predicted the chloride concentrations in the panel concrete. Modified parameters are suggested to improve these predictions.
-
Format:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
