Why is epoxy-coated rebar commonly used in bridges and piers?

Epoxy-coated rebar is favored in the construction of bridges and piers primarily due to its resistance to corrosion. In environments where concrete structures are exposed to de-icing salts, seawater, or other corrosive agents, traditional steel rebar can easily deteriorate over time. The epoxy coating acts as a protective barrier, preventing moisture and salts from reaching the steel core, thus significantly extending the lifespan of reinforced concrete structures.

This resistance to corrosion is crucial in maintaining the structural integrity and safety of bridges and piers that experience significant traffic loads and environmental exposure. As a result, using epoxy-coated rebar helps reduce maintenance costs and prolong the overall life of the structure, making it a practical choice for engineers and builders involved in these types of projects.