A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Corrosion Testing of Bridge Decks
When the percentage of corrosive halfcell potentials on a bridge deck proper exceeded about 10% or concrete corrosion caused delamination exceeded about 1% of the deck area, a chloride analysis generally would not be required as it was already too great. For the average depth of reinforcing steel, the quantity of chloride apparently needed to cause corrosion was statistically related to a maximum amount at the 95% confidence limits of 1.0 lb./cu.yd. The accuracy of chloride determinations was about equal when the concrete was either drilled or cored. Although the halfcell potential of -0.35 volts CSE is indicative of active corrosion, an equipotential contour map is the most reliable means for evaluating the corrosion activity of steel in concrete. After repair of concrete delaminations, the percentage of corrosive potentials reduced by about 50%. Repairing concrete delaminations does not prevent or necessarily control corrosion at other locations.
Corrosion Testing of Bridge Decks
When the percentage of corrosive halfcell potentials on a bridge deck proper exceeded about 10% or concrete corrosion caused delamination exceeded about 1% of the deck area, a chloride analysis generally would not be required as it was already too great. For the average depth of reinforcing steel, the quantity of chloride apparently needed to cause corrosion was statistically related to a maximum amount at the 95% confidence limits of 1.0 lb./cu.yd. The accuracy of chloride determinations was about equal when the concrete was either drilled or cored. Although the halfcell potential of -0.35 volts CSE is indicative of active corrosion, an equipotential contour map is the most reliable means for evaluating the corrosion activity of steel in concrete. After repair of concrete delaminations, the percentage of corrosive potentials reduced by about 50%. Repairing concrete delaminations does not prevent or necessarily control corrosion at other locations.
Corrosion Testing of Bridge Decks
D. F. Stratfull (author) / W. J. Jurkovich (author) / D. L. Spellman (author)
1975
32 pages
Report
No indication
English
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