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Two major Interstate 17 bridges in Phoenix were recently repaired using a new carbon-fiber technique developed by a Tucson company.

The Arizona Department of Transportation says the repairs focused on bridge girders that were damaged when they were struck by over-height vehicles. Instead of a normal repair method, such as injecting epoxy to rebuild sections of the concrete girders, ADOT wrapped the girders in a strengthening material called Fiber Reinforced Polymer, or FRP — carbon-fiber strips that…. read more

Source: Arizona Highways

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