Date: November, 2005
Location: Highway, Elkton Virgina
Contractor: Lanford Brothers, Rounokee VA. MJ construction, Tarpin Springs FL
Engineer: Virginia D.O.T.
Highway overpasses are subject to harsh environmental and traffic conditions that speed their deterioration and cracking. In addition to the age of many of these structures, water and road salt seep down the cracks and collect in the pockets under the negative steel, and freezing of the water can cause the bridge deck surface to become pitted and extensively cracked, requiring expensive repairs.
To incorporate composite grid as repair and waterproofing to leaking joints on highway 33 at the 340 overpass.
Material Used: FORTRESS Carbon/Kevlar Grid 48K with 4020 epoxy resin
Fortress 4020 Epoxy gel was used for water proofing sealant and carbon/kevlar grid was encapsulated into the epoxy resin. Vacuum clamping process was utilized to remove any trapped air. Two lifts of epoxy overlay and broad cast aggregate was then applied.
Joints were repaired in less than one hour and highway was open to traffic in four hours.