Addressing Corrosion Extends Concrete Service Life
Summary
Yet, those responsible for maintaining today’s concrete structures are finding their buildings and bridges may not last as long as they’d like, partly due to the destructive effects of corrosion. Long-term durability in modern concrete structures is frequently impacted by corrosion of the embedded steel used to reinforce and limit cracking. De-icing salts generally consist of chlorides, electrolytes that react with other components in the concrete to form an acid, which can cause areas of severe corrosion. A combination of chlorides, moisture, and carbonation eventually caused the steel reinforcement to corrode the concrete on the underside of the facility’s roof decks. The repairs performed are expected to provide an additional 10 years of service life to allow the structure to be used while the building is slowly decommissioned.
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