Date: April 2012
Location: I-75 & 12 Mile Rd in Sterling Heights MI
Engineer: Michigan Department of Transportation
Contractor: Smith’s Waterproofing
Material used: Fortec 600 gsm unidirectional carbon fiber fabric w/#4550 Epoxy Saturant and #590 Epoxy paste
Project Scope: Concrete Columns were deemed to be fatigued due to deterioration of steel reinforcement. Repair was to wrap columns using 600 gsm carbon fiber wrap utilizing onsite impregnator of epoxy saturant.
Conclusion: Wrapping column with Fortec carbon fiber fabric allowed for a minimal road closure as would have been needed with old method of teardown and replacement of column. The #4550 epoxy allowed contractor to cure out in field under difficult weather conditions. With highs in the 60’s and lows dipping into the 40’s a night curing was a challenge.