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Background
EDYSTON was utilized by RL McCoy, LLC and the Indiana Department of Transportation to rejuvenate the walls of the Kruse Tunnel in Ft Wayne, In. The project will be a mutli-year study on the impact of the EDYSTON technologies in controlling the deterioration cycle of the concrete tunnel and be part of the restoration package to bring it back into service.
The Kruse Tunnel used to act as a means for rare cars to be shuttle to a car museum in Ft Wayne. Due to the deterioration, the tunnel was decommissioned. Since the beginning of the EDYSTON project the Kruse Tunnel has been repurposed for part of the city’s new park, Figure 1.
EDYSTON
In order to quantify EDYSTON’s impact it was only applied to one side of the tunnel. The process of applying is preceded by pressure washing loose debris off of the surface. Based on the deterioration level, the EDYSTON product DENSYGEL was applied through successive applications over 2-hrs. A commercial grade, cordless bucket sprayer was used to uniformly apply EDYSTON within 10 minutes of the concrete surface reaching a saturated surface dry condition after the initial pressure washing step.
Results
Within 18-hrs it was clear that EDYSTON had stopped any water migration through the areas it was applied, while water continued to drip from the untreated side of each joint. In August 2024, 30-days after the EDYSTON was applied to the concrete surface it was evaluated using the RILEM water tube test. EDYSTON reduced permeability of the concrete by 10% to 40% illustrated in Figure 3.
These initial results indicate that the DENSYGEL hydrogel controls the wicking action of water and can be used to slow future deterioration of cracks within the concrete of the spillway. At a product price of $0.50 to $0.75 per sq ft, EDYSTON proved itself both cost effective and efficient at the rejuvenating the damaged concrete at the Kruse Tunnel.
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