David B. McDonald

David B. McDonald's Posts

Coating Repaired Rebar

One approach to improving the performance of reinforced concrete structures in corrosive environments has been to coat the reinforcing bars with epoxy or another corrosion-protective coating. Read more

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Reducing Transverse Cracking in New Concrete Bridge Decks

Most concrete bridge decks develop transverse cracks soon after construction. The authors recently completed a study for the National Cooperative Highway Research Program (NCHRP) that examined the causes of transverse cracking in new concrete bridge decks. They found that a combination of shrinkage and thermal stresses causes most transverse deck cracking, not traffic loads and vibrations before or during concrete hardening. Read more

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