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.
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.
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 a city bus garage in the Pacific Northwest needed a fast concrete repair solution, crews turned to 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
The process starts with removing dirt and debris from the cracks and preparing them for repair.
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.
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.
Roadware 10 Minute Concrete Mender™ can be mixed in bulk with simple tools and equipment.
Manufactured sand or quartz is added to the Concrete Mender to make a trowel-able mortar.
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.
Repairs can be made in all seasons with an ambient temperature range of -20F to 100F.
Roadware 10 Minute Concrete Mender™ repairs are ready for bus traffic in about 10 minutes at 70 degrees F.
At Roadware, we encounter many two-component polymer concrete repair products that claim to be similar to Concrete Mender™. One product even refers to itself as “Quick Mender.” However, these products are primarily polyurea-based and are often too thick to effectively penetrate concrete surfaces. Additionally, they are highly reactive, becoming sticky and gooey just one or two minutes after mixing, making them difficult to trowel. When you examine the details, you will notice a significant difference between these alternatives and the 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 measures a liquid’s ability to overcome its internal friction and penetrate materials such as concrete. Roadware 10 Minute Concrete Mender™ has a surface tension that is one-third that of water, allowing it to enter concrete cracks and fissures more quickly and deeply than water. This low surface tension enables Concrete Mender™ to infiltrate standard bond lines and promotes structural bonding with the concrete’s aggregate. For more details, please refer to the electron microscope slide below.
Low surface tension offers another hidden benefit: it enables Roadware 10 Minute Concrete Mender™ to be mixed with more than two parts sand while still remaining workable and easy to trowel. In contrast, if you try that with a polyurea, you’ll end up with a gooey mess.
Roadware 10 Minute Concrete Mender can be bucket mixed and applied like or mortar.
Roadware Microdoweling™ Technology:
The slab-to-slab micro-doweling action provided by Roadware 10 Minute Concrete Mender effectively links concrete slabs together, securing them in place while allowing for full traffic and dynamic load transfer within just 10 minutes. This micro-doweling action is more compatible with concrete and less reactive in harsh environments compared to poly-coated rebar. Millions of micro-dowels penetrate the slabs, bridging and bonding broken and jointed surfaces side by side. This remarkable technology is suitable for addressing hairline cracks, wide trench cracks, irregular cracks, cured control joints, and variable depth spalls.
Scanning electron microscope image of the interface between Concrete Mender™ and concrete.
In just 10 minutes at 70°F (21°C), this micro-doweled bond achieves compressive and shear strengths equivalent to those of poured and fully cured concrete. As a result, bond-line failures are now a thing of the past. Furthermore, parallel re-cracking, which is often seen when epoxies cure, is eliminated thanks to Roadware’s micro-doweling technology.
Structural Polyurethane
Roadware 10 Minute Concrete Mender™ is a polyurethane-based material designed to restore the structural integrity and aggregate interlock of distressed concrete. Its low surface tension and low viscosity allow it to penetrate concrete surfaces effectively. The product utilizes cross-linking polymer chains to bond directly to the concrete-aggregate matrix. This bonding action harnesses capillary forces to self-inject polymer chains into the surrounding concrete.
The material is engineered to have a modulus of elasticity that is lower than that of the surrounding concrete, ensuring it does not become brittle over time. Additionally, it can be mixed with manufactured sand to create a polymer concrete that is compatible with Portland Cement Concrete (PCC), enabling effective structural repairs for concrete cracks and spalls.
Advantages– One of the key benefits of this material is its very low surface tension and viscosity, which allows for effective saturation bonding of cracks without significant effort. This characteristic enables the repair process to be straightforward, requiring only minimal preparation, such as removing loose debris from the area before application.
Once applied, if the material is allowed to flow freely to the full depth of the crack, the repair can be classified as structural. To enhance the durability of the repair and prevent issues such as water pooling underneath the slab, it may be advantageous to incorporate manufactured sand or quartz into the mixture. This addition helps to optimize material usage and improve overall stability.
For cracks measuring greater than 0.125 inches in depth, it is recommended to mix the polyurethane with sand at a ratio of two parts sand to one part polyurethane. This not only extends the volume of the repair material but also significantly increases its strength. The inclusion of sand provides the added benefit of aligning the thermal coefficient of expansion of the repair material more closely with that of the surrounding concrete, thereby minimizing the risk of future cracking due to temperature fluctuations.
Another notable advantage of these polyurethanes is their versatility in application temperatures. They can be effectively applied in a wide range of substrate temperatures, making them particularly useful for repairs in freezing conditions and cold storage environments. These materials can even be applied in extremely low temperatures, as low as -20°F (-23°C), ensuring that repairs can be conducted year-round, regardless of weather conditions.
Finally, one of the practical benefits of this repair material is its quick curing time. Typically, repairs will be fully ready to accommodate traffic in approximately 10 minutes when applied at a temperature of 72°F (22°C). This rapid turnaround time minimizes downtime and allows for efficient maintenance of surfaces in both commercial and industrial settings.
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.
Easy Floor Crack Injection using cartridges:
Roadware 10 Minute Concrete Mender can be injected into a wide range cracks and delaminations using a simple cartridge and special Soft-tip injection mixers. Successful full-depth repairs have been made in 24″ of concrete.
Slowly injecting Roadware 10 Minute Concrete Mender into 24″ of concrete using 600ml cartridge and soft-tip injection mixers.
The core sample shows full depth repair down 24 inches.
Hairline cracks repaired using Roadware 10 Minute Concrete Mender and Easy Injection application.
Vertical Crack injection
For fast and easy vertical crack injection on walls and structures, we recommend the Gebbie Tech System
THE GEBBIE TECH SYSTEM TRANSFORMS VERTICAL CONCRETE WALL REPAIR
Comprehensive testing by Opus International Consultants – repairs have consistently achieved results higher than the manufactured panel.
Full training in the system – a step by step training video and instructional booklet is included within each kit.
Save time and money! Conventional repair methods with epoxy have longer repair times, additional downtime and are more expensive.
Use a hand gun – no need for expensive pumps! The Gebbie Tech System uses the cost effective Roadware 10-Minute Concrete Mender™ hand gun to repair walls.
Complete penetration. Due to the composition of the Roadware 10-Minute Concrete Mender™ the resin travels easily from the injection point.
The approved vertical wall repair system. The Gebbie Tech System is listed in Roadware’s 10 Minute Mender Concrete Data Sheet as the approved method of vertical concrete wall repair.
Repairs cracks from a hairline through to quarter inch. Walls are repaired within 2 – 12 hours depending on the temperature, and the length of the cracks.
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.
Polished concrete repair with Concrete Mender™ Off-white.
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 repairs when they fail.
4030 Grit manufactured quartz sand is the standard sand used with Roadware 10 Minute Concrete Mender.
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.
Roadware 10 Minute Concrete Mender can be easily mixed in a bucket with sand or used neat. No pumps of special equipment needed.
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.
Use Roadware needle tip injection to repair hairline cracks in concrete floors.
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.
Use Concrete Mender Off-white to make your own colored repair by adding different colored sand at the time of application.
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.
Supervalue warehouse cold storage floor repairs with Concrete Mender™.
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.
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.
Stop repairing polished concrete with polyurea joint fillers. They look like plastic, do not bond well, and do not hold-up over time. Concrete polishing lets the natural beauty of stones, sand, and rock shine through. Your repair product should as well.
We took the provenMicrodoweling™ properties of Roadware 10 Minute Concrete Mender™ and combined it with natural sands, aggregates and pigments to make repairs that not only look great, but perform better than epoxies and polyureas.
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.
Question: How do you epoxy inject cracks in floor slabs on grade when you do not have access to the bottom of the slab? What keeps the product from running out the bottom and all over the place?Answer: We make these type of repairs all the time. The first thing to do is dump the epoxy. It is too thick, too brittle, and takes too long to set. Fast setting materials like 10 Minute Concrete Mender allow you to control set points deep in the crack and prevent material seepage.Roadware 10 Minute Concrete Mender™ has an ultra low viscosity of 8cps and will gravity inject into the smallest of cracks. We make the repair in stages adding fine silica sand into the crack as necessary to prevent the material from running out the bottom. The product can be injected with needle tip mixers as small as 18 gauge. With careful technique and experience you can make structural repair that will restore aggregate interlock and restore the slab.
Start out by adding a small amount Concrete Mender to the prepared crack and noting where material in running beyond the slab. Add a light dusting of silica sand or fine quartz to the crack and some more Concrete Mender. The Concrete Mender will combined with the particles of sand to form a quick setting, “mud” at the bottom of the crack. Repeat as necessary and repair the full depth of the slab.
This will be a structural repair with no ports, no pumps, and almost no down time.
Roadware 10 Minute Concrete Mender™ needle tip application.
