The Use of Porcelain Enamel Coatings on Reinforcing Steel to Enhance the Bond to Concrete

摘要

Initial testing has shown that specialized porcelain enamel coatings can significantly increased the strength of the bond developed between Portland cement mortar and steel reinforcement materials. Incorporating unhydrated Portland cement into the vitreous enamel fired on a smooth mild steel rod was found to increase the bond strength by a factor ranging from three- to five-times compared to uncoated steel. Specialized porcelain enamel coatings can potentially be used to improve the performance of steel used in concrete reinforcement in forms ranging from metal fiber to conventional rebar or sheet metal panels used in composite flooring.