RCR-7® | Culvert Pipe Repair

In July 2021, along SR 66 near Delphos, Ohio, Meredith Brothers and DOT workers scheduled this 60”, 24’ long culvert pipe for repair. Made of 8 gauge corrugated galvanized steel multi-plate pipe and installed approximately 30 years ago, it had thinned from years of water and sediment flow.

ITL Reinforced Concrete Roll®, (ITL RCR®) was selected to repair, protect and extend the life of the pipe while minimizing disruption to traffic from the adjacent highway during installation. The ITL RCR-7®, or ~7mm thick material, is ideal for culvert repairs. One roll of 16’4” x ~65’ 7” was pre-cut to 4’x 6’ sheets and Hilti-fastened every 6” along the inside top edges and end of the pipe. Sheets down the length of the pipe were also overlapped by 6” and welded together with a hand held propane torch.

Further adding installation ease as well as pipe strength is the material's ability to mold well to the pipe corrugations during the hydration process. Tar was applied and sealed the top edges before ITL RCR® was hydrated to start the curing process. As ITL RCR® can be installed and subsequently cured in water, the pipe was returned to service immediately after completion of the installation.