Concrete rebar corrosion can be addressed by applying a coating

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In coastal port terminals, sea-crossing bridges, as well as airports and highways that require the use of saltwater to remove ice and snow, the inevitable presence of cracks or voids in the reinforced concrete can lead to rusting of the rebar when exposed to saltwater. The rust-induced oxide scale expands in volume by dozens of times, causing concrete cracking and spalling of the protective layer. This exposes the steel reinforcement directly to the atmosphere, water, and corrosive agents, thereby accelerating the corrosion rate. As a result, buildings often deteriorate prematurely, before reaching their designed service life. The use of epoxy-coated rebar is an important measure to address such problems; it can shift the approach from reactive repairs to proactive prevention, thereby extending the service life of buildings. The main characteristics of epoxy-coated rebar include: excellent chemical corrosion resistance ； The formed coating exhibits high adhesion to metals, low shrinkage, and great ductility, effectively blocking corrosive substances ； It can extend the service life of buildings, avoiding the many inconveniences and high costs associated with repairs or demolition.