Are overlays used with Exodermic™ decks?
The top portion of an Exodermic™ deck is essentially the top half of a standard reinforced concrete slab, and is therefore compatible with any overlay types used with concrete bridge decks. Overlays are recommended for use on precast Exodermic™ decks, but are not essential. For precast decks, an overlay helps to protect the field-placed closure pours and cold joints from water intrusion and freeze/thaw damage. Overlays are rarely used on cast-in-place Exodermic™ deck applications, as weight is generally a concern when Exodermic™ decks are chosen.
