Concrete Delamination Repair

Roadware 10 Minute Concrete Mender™ provides an excellent solution for repairing delaminations in concrete topping slabs. With its exceptionally low viscosity of under 8 cps and exclusive Microdoweling™ penetration capabilities, it flows deeply into delaminated concrete voids. The Concrete Mender restores aggregate interlock and facilitates dynamic load transfer under heavy traffic. You can avoid the costs and complications linked to pressure injection using epoxy, as it requires no ports or pumps. Fill and repair delaminations within hours, not days.

The Roadware Easy Injection method involves drilling multiple 3/8 inch (1 cm) holes into the concrete down to the delamination. Use a shop vacuum to remove dust and inject pre-mixed Roadware 10 Minute Concrete Mender™ with a Roadware Easy-injection Mixer. This method allows you to observe the material exiting the adjacent hole, confirming that it fills the delaminated area. After filling, blend the holes into the surrounding concrete using a finishing stone or re-drill 1/4″ (5 mm) deep and fill them with a color-matching concrete mortar

Another method involves using a diamond drill to create a 2 or 3 inch (5-8 cm) diameter hole in the concrete slab down to the delamination. Dust is removed with a shop vacuum. Roadware 10 Minute Concrete Mender is poured or pumped into the void. Only one or two inches (3-5 cm) of head pressure is necessary to push the material as far as 10 ft (3 m) into the delamination. When the material backs up to the top of the hole and fills the void, silica sand is added, and the hole is filled flush with the surface. Soundings are made with a hammer to confirm the delamination is repaired in about 30 minutes after application.

Roadware is featured in the July 2008 issue of Concrete International. This is the official publication of the American Concrete Institute. The article was written by Nelson Tonet, President of Express Polymers at the time and Roadware distributor. The ACI has granted us permission to allow the article to be downloaded off our website. Click here to download and view the article.

ABSTRACT
“Delaminations in concrete floor slabs can be difficult to repair in a cost-effective and timely manner. A newly developed product (Roadware 10 Minute Concrete Mender™) that uses a two-part hybrid polyurethane with a viscosity similar to water can significantly reduce the difficulty of performing delamination repairs by easily flowing up to 10 ft (3 m) from an injection point and penetrating deep into concrete surfaces. The product also speeds up repair by setting in only 10 minutes, allowing the repair to be checked by sounding only 30 minutes after product placement.”

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Both methods will yield good results and are more cost effective then epoxy injection.
Product Information for Roadware 10 Minute Concrete Mender.

80300 Roadware 10 Minute Concrete Mender 600ml Cartridge

1006-STR 24-element static mixer with Easy Injection Tip

1006-STR 24-element static mixer with Easy Injection Tip

5300C 600ml Dual Cartridge Application Tool

600ML (300x300) dual cartridge application tool for all Roadware 600ML cartridges.

Less Evasive Concrete Repair | Reducing Silica Dust