Date: January 2006
Structure: Segmental Bridge I-75 connector to Sawgrass SR869, Fort Lauderdale, Florida
Contractor: Lanford Brothers, Rounokee VA. MJ construction, Tarpin Springs FL.
Engineer: Florida D.O.T. Larry Sessions. PE.
Material Used: FORTEC Carbon/Kevlar Grid 24K 8″ wide with 4020 epoxy resin
Project Scope:
Waterproof segmental joints to control long term water infiltration into tension tendons

Previous method was to saw cut and fill with low modulas epoxy. New method: 4020 was utilized as waterproofing membrane; carbon/kevlar grid was used to strengthen and transfer the load across the joint. After joints were waterproofed, E-Bond 526-HV epoxy overlay was used to overlay the entire bridge surface. 15,580 linear ft of carbon/kevlar was placed and cured at amibient temperatures.

Entire project was completed in under 55 days, including 2,000 ft. of carbon/kevlar joint per day. After being open to traffic for over a month, there are no signs visual cracking in the overlay that had occurred when using saw cut method only a short time after being opened to traffic.

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