Riprap, Flow-Through Rockfill, and Reinforced Rockfill

Fighting Corrosion - Coatings• First line of defense• Zinc, (galvanized coatings), has a limitedlife…sacrifices itself to protect the steel• Zinc is conductive and would require more electricalenergy if cathodic protection were ever added to theprotection scheme• Epoxy has small discontinuities that leave somesmall areas exposed to corrosion• A corrosion monitoring system can tell whencathodic protection might be necessary if all othertypes of protection do not work.