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Background
EDYSTON was utilized by RL McCoy, LLC and the Indiana Department of Transportation to rejuvenate 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 a concrete overlay system. The bridge over Clear Creak on State Road 469 acts as a necessary artery for commercial transportation in the Ft Wayne district. Due to the premature deterioration, of the concrete surface, the bridge deck was knocked, sounded, and hydro-jetted. This aggressive process was done to clean the concrete surface of deteriorated concrete and create a profile for the next overlay to adhere, Figure 1.
EDYSTON
In order to quantify EDYSTON’s impact it was only applied to one side of each of the seven construction joints. The process of applying is preceded by pressure washing loose debris off of the surface. Based on the deterioration level, the EDYSTON products DENSYGEL was applied through one application at 1250 sq ft per gallon. 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. The cost of the DENSYGEL product was $0.50 per sq ft for the application to the hydro-jetted surface and the same amount on the grooved concrete overlay.
Results
Within 72-hrs the concrete overlay was placed on the concrete bridge deck, Figure 2. The concrete used was a standardized concrete overlay as prescribed by the IND-DOT from the 2024 Specifications Guide. Two-weeks after the overlay was placed, the contractor cut grooves into the concrete surface, an additional dosage of the DENSYGEL was applied through one application at 1250 sq ft per gallon to the concrete surface after the grooving process.
The initial results from the field point towards a longer term life-cycle than compared with the overlay process without the EDYSTON. An impact echo of the overlay was conducted and shower no major signs of delamination of bonding and as one IND-DOT engineer put it, “impact echo from the Anthony deck with EDYSTON looks very good compared with other results…”.
Furthermore, for the first time in the last 2-years of bridge deck overlay construction, the grooves have not failed and cracked.
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