All posts by Kelton Glewwe

concrete mender

Roadware Safety Dots

Roadware distributor Bill Bacha of Precision Devices in Connecticut has developed an innovative way to create yellow safety markings in warehouse and cold storage floors. By simply using a 4′ core drill and Roadware Concrete Mender in Safety Yellow, Bill can mark safety areas that are permanent and can be applied at temperatures well below freezing.

 Use a core drill to make 3″ circle impressions about 1/4″ inch deep.
 
 Fill the circles with Roadware Concrete Mender in Safety Yellow color.

The safety circles will cure yellow in about 15 minutes at 70 degrees F or in an hour at 0 degrees F.

Roadware Concrete Mender in Safety Yellow permanently bonds with the concrete using Roadware’s Microdoweling™ technology.

• Integral color will not peel or chip-off.
• Apply in temperatures as low as -20°F.
• Cures forklift traffic ready in 15 minutes at 70°F.
• Easy to clean and maintain.
• High chemical resistance.
• Based on Roadware’s proven Microdoweling™ technology.

Ordering:

Call Roadware at 800-522-7623

Item 70020-y (2 gallon kit) Concrete Mender in Safety Yellow

concrete mender, Concrete Repair

Hairline Crack Repair with 10 Minute Concrete Mender™.

 

 
Concrete Mender with needle tip applicator repairing a hairline crack.
Concrete Mender is applied with a needle tip to a hairline crack in a decorative concrete floor.
Concrete Mender repair blended into the surrounding concrete.
Repairs are blended in with the surrounding concrete using sandpaper as the product cures.
The sandpaper picks up particles and color from the surrounding concrete and blends hem into the Concrete Mender while it’s in a plastic state. The result is a repair that blends with and closely matches the surrounding concrete. The floor is resealed after and the repairs blend in nicely.
Concrete Repair, MatchCrete

Repairing cracks in polished concrete.

Repairing Cracks in Polished ConcreteUse Roadware MatchCrete™ Clear to repair and match polished concrete floors.

 

 

 

 

 

 

 

Concrete Repair

Safety Yellow Line Marking with Concrete Mender™ Yellow

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Roadware Concrete Mender™ is available in safety yellow.

Permanent safety yellow line marking with Concrete Mender™

Use for creating permanent yellow safety lines in concrete floors.
• Integral color will not peel or chip-off.
• Apply in temperatures as low as -30°F.
• Cures forklift traffic ready in 15 minutes at 70°F.
• Easy to clean and maintain.
• High chemical resistance.
• Based on Roadware’s proven Microdoweling™ technology.

Yellow Concrete Mender™ cures to a bright safety yellow color in minutes.

Yellow safety marking can be permanently installed in concrete floors with this material. The photo above shows Concrete Mender™ Safety Marking after a year of commercial service.


Bill Smith, US Food Service, Wixom, Michigan.

After years of frustration trying to keep safety line marking in place in a cold storage warehouse, Bill Smith of US Food Service in Michigan started looking for a better way. Installing safety line marking in a 38°F cold storage warehouse is especially challenging. With the 24/7 operations and the heavy fork lift traffic, there was never enough time to let traditional marking paint to cure without the forklift tires marking up the paint. At cool temperatures, the cure times were even slower. Marking tape fared no better. The cold concrete was hard to adhere to and the heavy traffic would quickly damage the marking tapes.

Bill was using Roadware 10 Minute Concrete Mender™ to repair cracks, joints, and spalls in the warehouse floor. He liked the fast cure times at low temperatures and he noted the repairs hold up very well to forklift traffic. Bill thought, “What if we could fix our safety line issue with Concrete Mender?” After experimenting with different types of Yellow sand and a request into Roadware for MatchCrete™ Concrete Mender factory colored in Safety Yellow, the line marking MatchCrete™ system was born.

After much experimentation, here is the system that works the best.
1. Scarify a shallow recess in to the concrete the length of the line marking. This can be done any number of ways. Stacking several diamond blades together and placing a temporary saw guide works best. Cut the recess about 1/4 inch deep and 1 inch wide.
2. Vacuum all dust and debris from the saw cut area. Mask off the recess with duct tape.
3. Carefully flood the recess area with Safety Yellow MatchCrete™ Concrete Mender. A small amount of safety yellow quartz sand may be used to choke-off any material that flows too far into any cracks or joints. The top of the material should be slightly recessed and smooth.

Permanent yellow line marking in concrete floors beyond paint.
Permanent safety yellow line marking with Concrete Mender™

The lines will be ready for full traffic in about 15 minutes at room temperature. Give them a few hours to cure if working in a cold room or freezer. No special maintenance is required.
Ordering:

Call Roadware at 800-522-7623

Item 70020-y (2 gallon kit) Concrete Mender™ in Safety Yellow

concrete mender, Concrete Repair

New Concrete Mender™ Mini Cartridge for precise application.

For the first time, Roadware 10 Minute C5150-mender-verticaloncrete Mender™, the industry’s only Microdoweling™ concrete repair polyurethane, is available in 50ml mini cartridges. The mini cartridge offers precise application control that is perfect for repairing hairline cracks. Each mini cartridge comes with a needle tip mixer and is simple to use. Use the 50 ml cartridge with the Roadware 5150 application tool. Each cartridge will repair about 10 feet of hairline cracks or 3 feet of 1/4 x 1/4 inch cracks.

 

Roadware 80105 50ml 10 Minute Concrete Mender™ mini cartridge with mixer and needle tip.

 

 

concrete mender, MatchCrete

New bulk packaging for Roadware 10 Minute Concrete Mender™.

Two-gallon Roadware 10 Minute Concrete Mender™ bulk kits will now come in high-performance plastic jugs. The plastic jugs are made from the same material as our plastic cartridges. The new jugs will be boxed and sold as two-gallon kits. The four-gallon kit will be phased out.  The new jugs allow for easier pouring and will accommodate a wide variety of spouts and spigots.

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Products affected:
Item 80020 Two-Gallon Kit Roadware 10 Minute Concrete Mender™
Item 70020 Two-Gallon Kit Roadware MatchCrete™ Concrete Mender
DISCONTINUED: Items 80040, 70040
Ten gallon bulk kits will remain in steel tight-head cans. 

Item 80020 Roadware 10 Minute Concrete Mender two gallon kit in high-performance plastic packaging.

Roadware 80020 two-gallon kits are shipped in custom designed 4-G shipper cartons to insure problem free delivery.

For several years, contractors in the field have been asking for a bulk container that is easier to pour from. The new plastic containers use a standard size and thread and will accept a wide range of spigots and pour spouts.

Screw-on spigots and spouts are available for precise measuring and pouring.
The new containers and easier to pour for more precise measuring.
concrete mender, Concrete Repair

Use Roadware 10 Minute Concrete Mender to repair and re-bond delaminated concrete slabs.

Use Roadware 10 Minute Concrete Mender to repair and re-bond delaminated concrete slabs.

Roadware delimanition repairs are 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 and a Roadware distributor.

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.”

View full article in PDF format Delamination Repairs PDF

Here is a Roadware synopsis.

Roadware 10 Minute Concrete Mender™ is an excellent choice for repairing concrete slab delaminations. The very low viscosity of less then 8 cps and the exclusive Microdoweling™ penetration properties of the material allow it to flow deep into delaminated concrete voids. The Concrete Mender will restore aggregate interlock and will allow dynamic load transfer under heavy traffic. The expense and mess of pressure injection with epoxy can be avoided.

Two methods of repair have been successful. The first involved dry diamond drilling a 2 or 3 inch (5-8 cm) diameter hole into 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 required 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 the void is filled, silica sand is added and the hole is filled flush with the surface. Soundings are made with a hammer to verify the delamination is repaired in about 30 minutes after application.

Click here to see how Nelson Tonet repairs delaminated concrete slabs.

Another method is to drill multiple 3/8 inch (1 cm) holes into the concrete down to the delamination. Remove dust with a shop vacuum and inject pre-mixed Roadware 10 Minute Concrete Mender™ with a syringe tipped with a rubber gasket. With this method, you can actually see the material exit the adjacent hole and verify the material is filling the delaminated area. After filling, the holes are blended into the surrounding concrete with silica sand and Concrete Mender or re-drill 1/4″ (5 mm) deep and fill with a color matching concrete mortar.

See the movie:

Both methods will yield good results and are more cost effective than epoxy injection.

Concrete Repair

Repairing vertical cracks in concrete structures with Roadware 10 Minute Concrete Mender™.

The same Microdoweling™ properties of Roadware 10 Minute Concrete Mender™ that make the material excellent for repairing horizontal surfaces also make a good choice for vertical repairs.

 

UPDATE: New method recommended for vertical crack repair. See the Gebbie System.
Roadware 10 Minute Concrete Mender™ is a very low viscosity polyurethane that uses a surface tension one-third of water to penetrate quickly and deeply into concrete cracks. The typical process relies on self-gravity injection to fill cracks completely. What is not seen by the naked eye is the capillary action of the Concrete Mender polymer chains flowing horizontally into the sidewalls of the crack.  We call this chaining of polymers into the concrete Microdoweling™.  This chaining of the concrete together works on vertical surfaces too.
So, your saying, “How do we get this super thin material to stay in place long enough for the Microdoweling™ to take place and the repair to cure?” Over the years, Roadware contractors have come up with creative and ingenious ways to use Roadware 10 Minute Concrete Mender™ on vertical surfaces. Here are some techniques that have evolved.
UPDATE: New method recommended for vertical crack repair. See the Gebbie System.
1.     Vertical Crack Injection
This technique involves covering the vertical crack with transparent duct tape and injecting Concrete Mender through the tape with a needle tip meter/mix cartridge. This method will work well if the concrete surface is smooth and the tape can make a good bond with the surface. The crack should be 1/4 inch (5mm) or less in width. The tape will make the, “form” while the Concrete Mender sets. Concrete Mender will not stick to duct tape, so once the material cures, you can cleanly pull off the tape. It is best to warm the cartridges up to 80° F (26°C) before use for a faster gel time. Start filling the crack at the lowest point and work you way up.
See the video here.
2.     Bulk Mix and Trowel Applied Repair
Mix bulk Concrete Mender and 60-80 grit manufactured sand into a thick mortar. Working in small batches, use a margin trowel to make the repair. The fine sand will hold the Concrete Mender in place long enough for the Microdoweling™ effect to take place and for the material to set.
3.     Bag Mix and Apply
This method uses a heavy duty, clear plastic bag to quickly mix one part of blended Concrete Mender to two parts of 60-80 grit manufactured sand. Once mixed by kneading the bag for several seconds, the bag is opened and the whole batch is applied and held in place with the bag. This technique is used around building mechanical entry points such as refrigeration and HVAC units.
Whatever method you choose, Roadware 10 Minute Concrete Mender™ stands at the ready to perform. Finished repairs can be ground smooth and painted to match the wall if necessary.
Kelton Glewwe
VP Operations
concrete mender, Concrete Repair

See actual bridge deck repairs in PA on Google Maps.

See actual bridge deck repairs on Google Maps.

Google has spent the last few years mapping and photographing roads all over the world. If you know where to look, you can see actual concrete repairs with Roadware 10 Minute Concrete Mender™

The Google Map photo below shows actual bridge deck repairs with Roadware 10 Minute Concrete Mender™ on Interstate 279 in Pittsburgh, PA.  See all the lighter colored spots? Each one is a hole or spall filled with Roadware 10 Minute Concrete Mender™. The repairs here are over three years old. Thank you Roadware distributor, Express Polymers, Inc., in the Pittsburgh area for sending this project in.


View Larger Map

concrete mender, Concrete Repair

Roadware Commercial for World of Concrete 2011

The World of Concrete 2011 in Las Vegas is next month, January 17-21. Roadware will be in Booth S11847. If your coming to the show, I hope to see you there. You can register for the World of Concrete 2011 here.  Use source code A20 for free registration courtesy of the American Society of Concrete Contractors. 
Here is a 15 second commercial we will be running at the WOC on the shuttle busses and on screens at the show.