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Concrete Overpass Repair

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Contractor and Engineering Resources
Case Studies
Repair of Concrete
Highway Overpass

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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.

In this case, carbon fiber/kevlar grid was used to repair and waterproofing leaking joints on highway and overpass.


Date: November 2005
Structure: Highway, Elkton Virgina
Contractor: Lanford Brothers
Engineer: Virgina D.O.T.
Material Used: FORTRESS Carbon/Kevlar Grid 48K with 4020 epoxy resin
Project Scope:
To incorporate composite grid as repair and waterproofing to leaking joints on highway 33 at the 340 overpass.



Solution:
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.



Observations:
Joints were repaired in less than one hour and highway was open to traffic in four hours.

Fortress Stabilization Systems - 1-800-207-6204






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