Tag Archives: concrete mender

Contractor uses 10 Minute Concrete Mender to make pebble-crete floor.


Basic SYSTEM in Bahrain is using Roadware 10 Minute Concrete Mender™ to make rapid curing pebble-crete flooring in Bahrain. The easy mixing Concrete Mender combines with the pebbles and acts as a binder in seconds. The mixture is easy to apply and trowel flat without getting sticky until the final minutes of curing. See the video here.

UPDATE May 4th, 2015


“I will take the opportunity of this e-mail & send you a recent photo of the pebbles application with Concrete mender at PinkBerry frozen yogurt / pictures was taken today, the floor is performing well and the client is very happy / the application will be repeated in Future PinkBerry shops in the region…”

Regards

George Honein

Basic SYSTEM in Bahrain is using Roadware 10 Minute Concrete Mender™ to make rapid curing pebble-crete flooring in Bahrain. The easy mixing Concrete Mender combines with the pebbles and acts as a binder in seconds. The mixture is easy to apply and trowel flat without getting sticky until the final minutes of curing. See the video here.

Pebble floor application at a Pinkberry Store in Bahrain. 

600ml of Roadware 10 Minute Concrete Mender™ is combined with about 6kg of 3-5mm pebbles. The components are mixed be hand, spread out on the floor about 3cm deep and troweled flat. 600ml

The pebbles are completely coated and help in place by the Roadware 10 Minute Concrete Mender™. The floor performs well and creates the look specified by the designer. The floor does not need further sealing. Daily maintenance consists of vacuuming and mopping.

When I first saw this application, I had some questions:

Hello George at Basic SYSTEMS in Bahrain.

Your application has not been tried before with Concrete Mender.
How does the surface look?

It’s giving a wet look / looking really nice.. they have used resin in the past in other outlets, but the problem it was not strong enough and was smelling due to cleaning process.

Are the rocks coated completely?

We have mix it with in a bucket with the Concrete Mender / pebbles size was 3 to 5mm, we have used 600 ml of CM and an average of 6 kg of pebbles, it was completely coated

Do any of the rocks come loose? 

Yes some, but it was superficial, we brush it out with hard brush the next day and fill the few areas where the pebbles was removed with same mix materials…

Will the floor be easy to clean?

Well vacuuming and mopping was our instruction to follow…

Do you use a clear sealer after the application?

The pebbles are completely coated/ by sealing it, will loose the natural look as required in the concept design.

See the video here:

Warehouse Floor Repairs in the Dominican Republic.

Franklin Gutierrez in the Dominican Republic is using Roadware 10 Minute Concrete Mender™  to repair multiple spalls in a warehouse floor that were causing damaged forklifts and damaged backs.

“We did 87 repairs for this client, it is a tin can production plant, they work 24/7 so there was no time to close areas for repairs , also lots of equipment very sensible to dust in the air. The major problem was that those small holes were damaging the wheels of the forklifts, damaging the back of the operators and creating possible dangerous situations for the forklift operators, because they manage very heavy loads and even a small hole could make it unstable.
We did all in two days and the client is very very happy, the problems were solved and there was no interruption for them.
This is a big plant that produces for the local market and export, its called Troquedom.” 

Loose materials are removed from the spall.

 

Bulk Roadware 10 Minute Concrete Mender™ mixed with sand is troweled into the spall. See instructions here.

 

 

Heavy forklift traffic can be restored in about 10 – 20 minutes depending on the temperature.
Roadware 10 Minute Concrete Mender™ with Microdoweling™ performance creates structural concrete repairs that will hold up under the toughest warehouse floor applications. Even if the warehouse is for frozen food and -20F or colder.

 

Use Roadware 10 Minute Concrete Mender™ to repair concrete statuary.

In October 2014, Roadware was exhibiting at the Concrete Decor Show in Ft Worth, Texas. After the first day of the show, I received a phone call from an exhibitor working in the Decorative Concrete Competition at the show. A decorative art piece cracked in half as it was removed from its mold. The piece was intended to be a giant leaf shaped chair. The question now was, can it be fixed and would Concrete Mender™ work?

I walked back over the show at the Ft Worth Convention Center and this is what I encountered.

The “Chair” was broken into two parts right at the critical stress point in the middle.
We carefully pushed the two pieces together using care to mate the surfaces as closely as possible and supported the chair with wood 2×4’s and some shims. I then place duct tape on the bottom of the break to hold the Concrete Mender™ in place while it cured.

I used two 50ml cartridges of Concrete Mender and 4030 silica sand to make a full depth repair.

This is how the repair looked when I was finished.

The next morning, we came back and removed the wooden supports and the duct tape. The repair held perfectly. The Concrete Mender has structurally repaired the high strength concrete back together. 

William Reynolds with element7concrete continued with the project by scoring veins in the leaf with a diamond blade.
A high gloss glaze was added to the surface.

You could barely see the break when the glaze cured.

The repair was strong enough the hold together when moving the chair into the exhibit.

The finished work help together for the duration of the show and the move out process after. Roadware 10 Minute Concrete Mender™ with its Microdoweling™ structural bonding really saved the day.
Thank you to William Reynolds with element7concrete in Granite Shoats, Texas for their masterful artistic skills and all their hard work.
Once work got out that I repaired the chair, I was call on to repair other projects at the convention like   this long horn steer.
I use 10 Minute Concrete Mender™ to repair the tip of the horn.

You would never know it was broken.

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.

 

When the busses have to keep rolling, Concrete Mender gets going.

When a city bus garage in the Pacific Northwest needed a fast concrete repair solution, crews turned to Roadware 10 Minute Concrete Mender™.
Repairing concrete cracks with Roadware 10 Minute Concrete Mender™

Mission critical concrete repairs is what we do here at Roadware. Facilities like city bus garages have areas that are required to be open and operational 24/7 365 days per year. Roadware 10 Minute Concrete Mender™ is your best choice for fast repairs that have to last.

January 18, 2014
Dear Roadware,
“I am writing this letter in regards to Roadware Incorporated, in particular their 10 minute mender concrete repair product. I have been involved in the concrete industry for 28 years. I am a former Certified American Concrete Institute field testing technician and have been an ACI Concrete Flatwork Finisher and Technician for more than 10 years. For the past 15 years, I have been working to perfect the art of concrete rehabilitation on structural concrete and Architectural concrete. Other repair textures include masonry, slate. granite, clay artworks and architectural stone works.At the 2011 World of Concrete Convention, I met with The Roadware sales staff. I was quite intrigued and impressed with their 10 minute concrete mender product line. I was given some test samples which ultimately persuaded me into using Roadware product.
Our first project using Roadware products was a complicated repair contract with a bus transit authority and I had to include a two-year warranty. There would be limited time access during the repair and I needed a product that would withstand heavy bus traffic within hours of application. I submitted my bid using the specifications and MSDS for the 10 minute mender product line and believe this may have been the reason I was awarded the job. End result 10 minute mender works! Fractured concrete, spalled concrete, cracked concrete. Concrete deficiencies e.g. all surface and deep restoration repairs. Microdoweling works period! 

While I was confident in the product, it is always reassuring to experience it first hand. I am quite familiar with what it takes to provide world class service to demanding customers. Roadware Employees deliver excellent customer service and unmatched product support.”

Sincerely,

William F. Neal
Bothell, WA

Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
The process starts with removing dirt and debris from the cracks and preparing them for repair.
Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
Sometimes, remove and replace is not an option. Roadware 10 Minute Concrete Mender™ can have this back in service in minutes, not hours or days.
Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
Roadware 10 Minute Concrete Mender™ mixed at a one to one ratio and blended with two parts sand. Each gallon of Concrete Mender makes about 2.2 gallons of repair material.

 

Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
Roadware 10 Minute Concrete Mender™ can be mixed in bulk with simple tools and equipment.
Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
Manufactured sand or quartz is added to the Concrete Mender to make a trowel-able mortar.
Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
Roadware 10 Minute Concrete Mender™ is available in 10 gallon kits or convenient 2 gallon jug kits.
The Roadware 10 Minute Concrete Mender™ blended with silica sand is poured into the cracks and troweled flat.
Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
Repairs can be made in all seasons with an ambient temperature range of -20F to 100F.
Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
Roadware 10 Minute Concrete Mender™ repairs are ready for bus traffic in about 10 minutes at 70 degrees F.
Repairing concrete cracks with Roadware 10 Minute Concrete Mender™
Customer letter to Roadware

 

 

All about Roadware 10 Minute Concrete Mender™

At Roadware, we see lots of two-component polymer concrete repair products that claim to be just like Concrete Mender™. One even calls it self, “Quick Mender.”  They are all basically polyurea based products that are too thick to effectively penetrate concrete surfaces and are so reactive, they become too sticky and gooey to trowel in just a minute or two after mixing.  When you dig a little deeper, you will see a very distinct difference in genuine Roadware 10 Minute Concrete Mender™.

  • What is Concrete Mender? Proprietary Polyurethane Blend
  • Formulation: Classified
  • Manufacturing: South Saint Paul, Minnesota, USA
  • Origin: NATO program for rapid bomb damage repair on runways.
  • Function: To penetrate deep into concrete cracks, joints, and spalls creating a structural repair in 10 minutes.
  • Military Use: Classified
  • Civilian Use: Repair cracks, joints and spalls in commercial, industrial and civil applications.
  • Service Life: Indefinite
  • Cure Time: 10 Minutes at 70°F (21°C)
  • Distribution: Worldwide Distributor Network

Surface Tension:

Surface Tension is a measurement of the ability of a liquid to overcome its own internal friction and penetrate into a material like concrete. Roadware 10 Minute Concrete Mender™ has a surface tension One third of water. It will penetrate concrete cracks and fissures quicker and deeper than water. This low surface tension lets Concrete Mender™ penetrate normal bond lines and allows structural bonding with the aggregate in the concrete. See the electron microscope slide below.

 

Low surface tension has another little hidden benefit.  It allows Roadware 10 Minute Concrete Mender™ to be combined with more than two parts sand and still be workable and trowel-able.  Try that with a polyurea and you will have a gooey mess on your hands.

 

 
Roadware Microdoweling™ Technology:
Slab to slab micro-doweling action, provided by Roadware 10 Minute Concrete Mender, links concrete slabs together, locks them in place and allows for full-traffic, dynamic-load transfer, in 10 minutes. This micro-doweling action is more compatible with concrete and less re-active in harsh environments than even Poly-coated re-bar. Millions of micro-dowels penetrate, then bridge and bond, side by side, broken and jointed slabs. Hairline cracks, trench wide cracks, irregular cracks, cured control joints and variable depth spalls are candidates for this amazing technology.
In 10 minutes, at 70°F (21°C) , this micro-doweled bond has the same compressive and shear strength as poured and fully cured concrete. This makes bond-line failures a thing of the past. Parallel re-cracking, often experienced when epoxies cure out, are eliminated with Roadware’s micro-doweling technology.

Structural Polyurethane

Roadware 10 Minute Concrete Mender™ is a polyurethane based material that restores structural integrity and aggregate interlock to distressed concrete by using low surface tension and low viscosity to penetrate concrete surfaces and cross -linking polymer chains to bond directly to the concrete-aggregate matrix.  This bonding action utilizes capillary forces to self-inject polymer chains into the surrounding concrete. This material should have a modulus of elasticity less then the surrounding concrete and should not become brittle over time. This material may be combined with manufactured sand to form a PCC compatible polymer concrete that can structurally repair concrete cracks  and spalls.

Advantages– Due to the very low surface tension of the material and low viscosity, complete saturation bonding of cracks can be easily achieved. Minimal prep to remove lose debris is all that is normally required.  This can be considered a structural repair if the material is allowed to gravity flow to the full depth of the crack. Manufactured sand or quartz may be introduced into the repair as necessary to prevent under slab ponding and martial waste. For repair greater than 0.125 inches, specified sand may be added at a ratio of two parts sand to one part mixed polyurethane as the crack is filled to extend the material and add strength. The sand also brings the thermal coefficient of expansion of the repair material closer in-line with surrounding concrete. Polyurethanes of this nature may be applied in a wide range to substreight temperatures making them useful in frozen and cold storage warehouse applications or cold weather application below -20F (-23C). Repairs are typically ready to accept traffic in approximately 10 minutes at 72F (22C).

Toughness:

Roadware 10 Minute Concrete Mender™ mixed with sand gets about as hard as concrete, yet it’s modulus of elasticity is slightly less than concrete so it will move with the slab, not work against it.

Common uses for 10 Minute Concrete Mender™
 
Spalled control joints and cracks.
Spalls and holes.
Delamination Repair

 

Uneven slabs and thresholds.
Crack Injection using gravity:
Typical crack injection repair techniques involve epoxy, ports, pumps, and pressure to force thick epoxies into a crack.  Roadware 10 Minute Concrete Mender™ with its low surface tension can do same job in less time, less mess, and better performance.

Polishable:

Polishing your floor to a mirror like finish? Repairs made with Roadware 10 Minute Concrete Mender™ will not smear into the surrounding surface or gum-up diamond polishing pads.  You can even add natural sand to match the grain and color of the surrounding concrete.

The repair pictured above shows  Roadware Concrete Mender™ Off-white blended with plain concrete sand and a small amount of portland cement. This water-thin polyurethane is almost translucent. When we add nearly any type of dry sand or aggregate, we get a fast-curing polishable repair that blends beautifully with the surrounding concrete. Since this material is almost translucent, it resists shadowing effects due to over-banding when applied.

Lower Cost:

By adding two parts silica or quartz sand to a gallon of Concrete Mender™ you will yield about 2.2 gallons of repair material.

A gallon of polyurea or epoxy will yield a gallon of repair material.  That makes polyurea more expensive to use even at half the material cost! This does not even factor in the hidden costs of short repair life, damage to the surrounding concrete caused by pre-mature failure, or the cost of redoing the the repairs when they fail.

 

Packaging:

Roadware 10 Minute Concrete Mender™ hand packed with state-of-the-art packaging materials.  They have to be good. The very low viscosity and surface tension require it.

Bulk Application:
Due to the the extended working time formula, bulk mixing of Concrete Mender™ is easy.  Unlike polyureas that start to gel up instantly, Concrete Mender will remain workable and flowable for several minutes before curing begins.  Much less wasted product setting up in buckets.
Pin-point Application:
With a Roadware needle tip mixer, you can apply Concrete Mender™ within-point accuracy delivering product to where it is needed most. Our needles come as small as 1.2mm in diameter.  If you can get a finger nail in the crack, we can get some Concrete Mender in there as well.

Freezers:

Working in the cold?  We’re from Minnesota. We know first hand what it takes to work in freezing temperatures. Roadware 10 Minute Concrete Mender™ can be applied at temperatures below -30 F ( -34C).  That is really cold.  Exposed flesh will freeze in seconds.  That is almost too cold to go ice fishing. Most repair products would freeze solid before curing and quickly fail.  Roadware 10 Minute Concrete Mender™ generates its own heat. Curing will take several hours, but you will still get the same great performance.

 

 

Colors:
Roadware Concrete Mender™ comes in two standard colors.  Concrete Grey and natural off-white. Since a typical repair is made up of two parts sand to one part liquid, the color of the sand will determine the color of the finished repair.  By adding colored quartz sand to off-white Concrete Mender, you can make custom colors as needed.
Specialty Applications:
We also custom make Concrete Mender in Safety Yellow, Red, Blue, and Black.  Use Concrete Mender Yellow to create permanent safety lines and marks in difficult areas like cooler and freezer floors.
Safety:
Roadware 10 Minute Concrete Mender™ is completely self-reacting and does not out-gas solvents or VOC’s when curing.  This material meets FSIS guidelines for work is federally inspected meat and poultry plants.

History:

For over twenty years, Roadware 10 Minute Concrete Mender™ has performed without fail in thousands of applications. Many times outliving the facility itself.

Concrete Mender repair in a cold storage warehouse after 15 years of heavy forklift traffic.

Utilizing technology developed to repair bomb damaged runways for NATO, Roadware 10 Minute Concrete Mender™ was reformulated and brought to commercial markets in the early 1990’s.  You can find us in nearly every industry that has concrete floors, decks, slabs or surfaces.

Links:
Roadware 10 Minute Concrete Mender™

Availability:

Roadware 10 Minute Concrete Mender is made in the USA and is available from Roadware authorized distributors and dealers worldwide. Call 1-800-522-7623 or 1-651-457-6122 to find a dealer near you.

Specifications:

For complete specifications, ASTM testing data, and usage guidelines, please visit the Roadware Website.