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, 2014Dear 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.”
William F. Neal
|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.|
|Customer letter to Roadware|
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 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 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 than 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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
We took the proven Microdoweling™ 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.
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.
How do polish a floor when your concrete is like this?
Deep cracks and surface spalling can make polishing jobs costly and difficult. A lot of the top surface has to be removed to get to a smooth finish.
Roadware 10 Minute Concrete Mender™ is a great choice for filling out all the cracks, spalls and holes before polishing.
The floor shows zero failure shown here 3 years later in 2007. The floor continues to perform today.
Use Roadware 10 Minute Concrete Mender™ and sand to repair damaged concrete block walls in an hour or less. Sent in by Dave Wilson at Myspec Integrated Concrete Repair Group in Georgia. 770-335-9123 Roadware 10 Minute Concrete Mender™ is great for repairing cracks and spalls in floors. This ultra-low 8cps viscosity material gravity flows deep into concrete and makes repairs from the bottom up. To repair a holes in a block wall, mix the Concrete Mender™ with fine silica sand to make a trowel-able mortar.
Step 2: Mask off the area like shown. In a clean bucket, mix one part AB blended Concrete Mender with 3 parts sand to make a stiff mortar and trowel into the repair area. You may want to tape a plastic sheet over the repair area to hold the Concrete Mender mixture in place while it cures for 10 minutes. See bulk mixing instructions here.
Step 3: After approximately 10 minutes depending on the ambient temperature, pull the masking and blend in the repair with a rubbing brick.
Step 4: Roadware 10 Minute Concrete Mender™ can be painted as soon as it cures. Paint the repair area to match the surrounding wall.
With Roadware 10 Minute Concrete Mender™ you can do a job in less than an hour that used to take two days. No more waiting for hours or days while traditional cement based materials to set and cure.
Here is a video of using Roadware 10 Minute Concrete Mender™ to repair cracks in concrete or block walls.
Why are my contraction joints spalling and what can I do to stop it?
joints) are joints cut into a slab shortly after pouring. The purpose of these joints is to control the cracking of the slab as it cures. Most concrete slabs shrink and sometimes curl for the first 12 months after pouring. Contraction joints allow the
slab to crack at pre-determined intervals instead of natural random cracking. Joint filler is used to protect the joints from spalling and chipping caused by traffic on the slab.
As the slab cures for the first
12 months, it shrinks in size and may even curl up at the joints. The contraction joints will expand as the slab shrinks. This causes the joint filler to split apart or dis-bond from the sides of the joint leaving them exposed to traffic.
joint. The force of the load has to transfer from the wheel, to the concrete, and to the base. If the slab is even slightly curled and the joint is expanded, the force of the load will impact on the joint causing cracking and spalling. You may even get stress cracking parallel to the joint. You can sometimes feel the uneven load transfer across the joint if you stand with one foot on either side of the joint and have someone else roll a heavy load across the joint.
the top. This will stabilize the slab, restore aggregate interlock,
and allow for complete and even load transfer from the wheels all the way down to the base. Your contraction joint problems are solved.
is recommended for interior controlled environment applications with sound concrete and base. Exterior applications may have different results. Always test a small section
of large repair for compatibility.