The National Academies Press

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From page 2... ... CONCRETE BRIDGE DECK PERFORMANCE SUMMARY Concrete bridge decks can deteriorate as a result of concrete distress from freeze-thaw damage, abrasion damage, alkali-aggregate reactivity, excessive cracking, or spalling caused by corrosion of the reinforcement. As concern about deterioration of concrete bridge decks from corrosion of reinforcement increased in the 1960s and 1970s, attention focused on several strategies to prevent or slow down the penetration of chlorides to the reinforcement. Read the entire page →
From page 3... ... 2 Epoxy-coated reinforcement continues to be the most common reinforcement used to reduce the potential for deterioration of concrete bridge decks from reinforcement corrosion. However, epoxy-coated reinforcement cannot be relied on to never corrode in a wet or chloride environment. Read the entire page →
From page 4... ... 3 • Design and Construction Practices – Maintain a minimum concrete cover of 64 mm (2.5 in.) ; – Use moderate concrete temperatures at time of placement; – Use windbreaks and fogging equipment, when necessary, to minimize surface evaporation from fresh concrete; – Provide minimum finishing operations; – Apply wet curing immediately after finishing any portion of the concrete surface and wet cure for at least 7 days; – Apply a curing compound after the wet curing period to slow down the shrinkage and enhance the concrete properties; – Use a latex-modified or dense concrete overlay; – Implement a warranty requirement on bridge deck performance; and – Gradually develop performance-based specifications. Read the entire page →

From page 2...

... CONCRETE BRIDGE DECK PERFORMANCE SUMMARY Concrete bridge decks can deteriorate as a result of concrete distress from freeze-thaw damage, abrasion damage, alkali-aggregate reactivity, excessive cracking, or spalling caused by corrosion of the reinforcement. As concern about deterioration of concrete bridge decks from corrosion of reinforcement increased in the 1960s and 1970s, attention focused on several strategies to prevent or slow down the penetration of chlorides to the reinforcement.

Read the entire page →

From page 3...

... 2 Epoxy-coated reinforcement continues to be the most common reinforcement used to reduce the potential for deterioration of concrete bridge decks from reinforcement corrosion. However, epoxy-coated reinforcement cannot be relied on to never corrode in a wet or chloride environment.

Read the entire page →

From page 4...

... 3 • Design and Construction Practices – Maintain a minimum concrete cover of 64 mm (2.5 in.) ; – Use moderate concrete temperatures at time of placement; – Use windbreaks and fogging equipment, when necessary, to minimize surface evaporation from fresh concrete; – Provide minimum finishing operations; – Apply wet curing immediately after finishing any portion of the concrete surface and wet cure for at least 7 days; – Apply a curing compound after the wet curing period to slow down the shrinkage and enhance the concrete properties; – Use a latex-modified or dense concrete overlay; – Implement a warranty requirement on bridge deck performance; and – Gradually develop performance-based specifications.

Read the entire page →

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