United States Department of Transportation
i
Durability performance of submerged concrete structures - phase 2 : [summary].
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2015-10-01
[PDF-485.47 KB]
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Abstract:Thousands of Florida bridges have steel-reinforced concrete piling foundations standing
in salt water. Over time, chloride ions in the water can migrate through the concrete to
attack the steel inside. The Florida Department of Transportation (FDOT) has implemented
designs that better protect the steel. However, many structures were built before the new
standards and, as such, are more susceptible to corrosion. Steel reinforcement has been
studied extensively in the section of the pile just above the water line, the so-called splash-evaporation zone, where salt buildup is greatest.
The portion of the structure below the water line
has been less studied, but this area can still be a
site of steel degradation.
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