The following revisions are made to the use of epoxy coated reinforcement in bridge structures:
The above recommendation is applicable to all prestressed girder, concrete box girder, and steel girder bridges with cast-in-place concrete deck slabs.
The condition of cracks in non-post-tensioned bridge decks worsen over the service life of the structure, with possibility of cracks extending through the deck thickness, causing corrosion in bottom layer reinforcement due to chloride penetration. Use of epoxy-coated reinforcement in bottom layer rebar will inhibit corrosion of reinforcement and deterioration of concrete.
However, the performance of longitudinal post-tensioned bridge decks is satisfactory with epoxy-coated reinforcement for top layer rebar only.
If you have any questions regarding these issues, please contact Bijan Khaleghi at 705-7181.
cc: Mohammad Sheikhizadeh, Bridge Construction - 47354