Tag Archives: hairline cracks

Cracked floor in data center repaired with Roadware 10 Minute Concrete Mender™.

When permanent repairs are needed for a data center that will operate 24/7/365, the contractor turns to Roadware 10 Minute Concrete Mender™. Concrete Mender’s Microdowling™ action penetrates deep into concrete cracks and can re-bond slabs back together to form a structural repair. The repairs can be polished flush in about 15 minutes leaving a smooth high performing surface.
Cracked concrete in a space to be converted to a data center in Omaha, Nebraska.
The cracked topping span at this data center needs to be repaired so a dust free environment can be maintained.
Roadware 10 Minute Concrete Mender™ is used to repair the cracks and spalls prior to concrete polishing.

Roadware 10 Minute Concrete Mender™is mixed with sand and applied with a margin trowel.  Unlike polyureas, Concrete Mender™ will not gum-up and will remain trowel-able for several minutes before setting.

Concrete crack repairs with Roadware 10 Minute Concrete Mender™ can be most any length, width or depth.

After about 10 minutes, repairs can be polished smooth using standard concrete polishing equipment. Concrete Mender™ will not smear into the surrounding surface under  the heat if the diamond polishing.

The polished floor is now smooth, dust free and ready for the data center.

 

The polished floor is now smooth, dust free and ready for the data center.

 

New videos showing MatchCrete™ Clear.

Last week I posed two new videos on the Roadware YouTube Channel showing Roadware MatchCrete™ Clear in action repairing cracks in an exposed aggregate concrete sidewalk and patio. I also posed a video on how to repair a hairline crack in a driveway or sidewalk.How to repair a crack in an exposed aggregate concrete patio using Roadware MatchCrete™ Clear in a 600ml cartridge.

How to repair an exposed aggregate concrete sidewalk using Roadware MatchCrete™ Clear in the 50 ml cartridge.

How to repair a hairline crack in a driveway, sidewalk, patio, or pool deck with Roadware MatchCrete™ Clear.

 

Repairing Cracks in Driveways and Patios Updated

One of the most common calls we get is asking how to repair a crack in a driveway or patio.  We designed Roadware MatchCrete™ Clear with this in mind.  Roadware MatchCrete™ Clear is a UV stable clear polyurethane hybrid that makes effective repairs to most exterior concrete surfaces.  By simply leaving the repair clear, the color of the surrounding concrete shows throughout the repair.

The first step to a good looking crack repair is to rout-out or cut the repair open with a diamond blade grinder.  You only have to go about 1/4″ x 1/4″. This will create a recess for the material to rest as it soaks down further into the crack.  Skipping this step will allow the material to flow uncontrollably on the surface and will create a messy looking repair.

 

Apply cartridge mixed MatchCrete™ Clear directly to the crack. Small amounts of silica or quartz sand can be added to keep the material from flowing out the bottom of the slab.  If necessary, matching colored sand can be used to match colored concrete areas. Fill the crack to slightly below grade to prevent material from flowing on to the surface of the concrete.

After a year of service, the repair above still looks good.  Please note, MatchCrete™ Clear is not a soft expansion joint material and should not be used in joints that are designed to move.  Always give careful consideration as to why the concrete cracked in the first place and what the concrete is expected to do in the future before making repairs of this nature.

UPDATE:
September, 2013
We have a new video for driveway hairline crack repair: