Can damage result from corrosion of rebar when chloride-based deicers are used on concrete structures, such as bridges and parking garages?
|
It has long been known that chloride ions from deicing salts, sea spray, sea water, marine fog, admixtures and mixing water can permeate concrete. When chloride, oxygen and moisture come together on the surface of unprotected steel, corrosion will result. Rust formation on rebar places pressure on the concrete that can result in cracking, spalling and delamination. The loss of bond between concrete and reinforcing steel and the loss of rebar cross-sectional area both have the potential to result in serious structural problems.
|
Companies and trade organizations with expertise in concrete construction technology are familiar with options available for corrosion protection in new or rehabilitated structures. With support from these experts, each end user should determine whether or not application of chloride-based deicers is appropriate for their given situation.
|
|
|
|
|
|