Kingsley Lau

TL;DR: In this paper, the corrosion performance over a nearly 30-year service period of epoxy-coated rebar (ECR) in Florida marine bridges is presented, and a predictive corrosion initiation-propagation model is developed and the model output is compared with the field results to identify suitable parameters for forecasting future rehabilitation needs.

TL;DR: In this article, eight coatings consisting of primers, topcoats and combinations of primer/topcoats were evaluated and shown to offer better corrosion protection of the steel substrate than its counterpart with polyurethane topcoat, while the addition of any of the top-coats has outperformed the properties conferred by the epoxy coating pigmented with zinc phosphate (ZP) and micaceous iron oxide (MIO).

TL;DR: In this paper, an innovative model to predict corrosion in reinforced concrete structures is presented, incorporating potential dependence and corrosion macrocell effects, which integrates the initiation and the propagation stages of corrosion in a single predictive model.

TL;DR: In this article, the authors examined three bridges in the Florida panhandle with ∼40 years in aggressive marine service and one newly constructed marine bridge utilizing concrete cylinder piles and found that the older marine bridges showed minimal corrosion distress despite a low design concrete cover over the steel hoop reinforcement (2 cm to 4 cm).

TL;DR: The extent of corrosion of epoxy-coated rebar in marine bridges was found to be generally correlated with concrete chloride diffusivity, DApp, with significant corrosion observed for bridges with DApp values reaching up to ∼10−7 cm2/s but not for sound concrete locations in bridges with difusivity approaching the order of 10−9 cm 2/s.