- Freezer Threshold Repair with Concrete Mender™
- Roadware 10 Minute Concrete Mender™ saves food distribution warehouse thousands of dollars for over 15 years
Concrete repair for freezer and cold storage warehouse floors.
If your business is refrigerated warehousing or grocery distribution, Roadware 10 Minute Concrete Mender™ is the premier concrete repair product for keeping your floors in top condition. The unique Microdoweling™ polyurethanes in Concrete Mender™ will cure at temperatures well below -20 degrees F. ( -28 C) in just a few hours. You can repair cracks, spalls, slabs, joints, and surfaces while the warehouse is in service.
Features:
- Easy to mix one-to-one ratio polyurethane.
- Add manufactured sand to extend the material over to two times. Two gallons of Concrete Mender™ will make 4.4 gallons of repair material.
- Ultra low viscosity for easy application and workability.
- Microdoweling™ penetration into the concrete for load transfer bonding.
- Cures only has hard as the concrete. Will not become brittle like epoxy.
- Tough repairs that can take industrial levels of punishment.
Benefits:
- Smooth and safe floors.
- Less damage to forklifts and equipment.
- Clean floors. Meets FSIS and USDA guidelines.
- Less tipped loads and damaged product.
- Reduced cleaning and floor maintenance costs.
- Reduced workers comp claims attributed to accidents.
Cold environments such as walk-in freezers and refrigerated warehousing pose difficult challenges for repairing concrete. In temperatures less than 0° F, most repair materials become unworkable and may take many hours to set and cure. Most epoxies are not usable below 32° F. Roadware Polyurethanes have been used in temperatures as low as -20°F below freezing. Listed below are some problems and solutions for working in cold environments.
Cold Environment Challenges
Frost: Frozen moisture in the concrete will act as a barrier between the repair material and the pours of the concrete. Most repair materials will try to bond to the frost coated concrete. When the temperature increases, the frost melts and so does the bond.
Working Conditions: Working with materials in the cold is challenging to both man and materials. Mixing epoxies or mortars in the cold is especially challenging. As the temperature decreases, the viscosity and flow rate of these materials increase making them harder to mix and much more difficult to work with.
Product Challenges and Limitations
Longer Cure Times
Lower temperatures create longer cure times. At zero degrees F, the cure time can be two hours or more, depending on the repair size. Longer cure time also allows for longer working times. See Cure Time Diagram.
Limited Preparation Options
Freezers and Coolers will require a mostly mechanical approach to concrete prep. Diamond grinders, wire wheels, Shop Vacuums, and concrete dust mitigation may be required.
Enclosed Areas
Repairs made in high-moisture conditions can produce a stronger odor during curing. Before applying Concrete Mender, ensure the repair area, sand, and aggregates are dry. Exercise caution when using Concrete Mender in coolers, freezers, or any enclosed spaces with low ventilation. Additionally, repairs should not be performed near active food preparation areas or in close proximity to odor-sensitive products, materials, or merchandise.
Curing: With most materials, cure times in cold environments are extended significantly. A product that normally cures in an hour at room temperature may take as much as 12 hours in a cold environment. Some materials may not cure at all before actually freezing solid.
ROADWARE Solutions
The extremely low viscosity and rapid cure times of Roadware 10 Minute Concrete Repair products make them excellent for cold environment application. Successful repairs are routinely made at temperatures below -20°F in freezer floors. Download the Cooler and Freezer Application Guide
Preparation
Remove loose concrete, dirt, and debris.
Use a heat gun or torch to remove water, ice, frost, and moisture from the repair area immediately before applying Concrete Mender.
Keep Concrete Mender and any added sand or aggregate at 60-80 degrees F until mixing and application. Frozen sand will likely contain ice and release moisture when mixed with Concrete Mender. Make sure any sand used is clean, warm, and dry. ROADWARE INCORPORATED 381 BRIDGEPOINT WAY SOUTH ST PAUL, MN 55075 WWW.RODWARE.US (651) 457-6122
Application
Cracks
Use a 300x300ml cartridge and flood the crack with Concrete Mender. Immediately apply a layer of 40-30 grit silica sand or equivalent. Add additional Concrete Mender and layers of sand up to the top making sure the sand is fully saturated. Strike off the top flush with the concrete and allow to cure. Finish as normal.
Spalls
Create a repair base by filling the lower one-inch of the repair area with a mixture of 10 Minute Concrete Mender™ and silica sand (30-40 grit). Use a ratio of 1 part mixed Concrete Mender to 2 parts silica sand. During the application, you can add up to 1/2 part of additional sand to help with troweling and placement. Make sure to leave the lower half of the surface rough and covered with sand to prepare for the next layer.
EXAMPLE
1 Qt side A,
1 Qt Side B,
4 Qts 40-30 grit silica sand, Up to 1 quart of additional sand as needed.
Once the lower layer sets and turns grey, continue adding additional layers to the surface and the desired finish.
The mixed material should always be resin-rich, and the sand should be fully saturated when applied to the repair area.
For extra surface strength, 30 grit aluminum oxide may be broadcast and troweled in place on top as the materials start to gel after placement.
Real Life Examples
Roadware 10 Minute Concrete Mender™ saves food distribution warehouse thousands of dollars for over 15 years.
COVERAGE CHART
ROADWARE 10 MINUTE CONCRETE MENDER™
Approximate yield with 40-30 silica sand mixed 2 parts sand to 1 part liquid.
| SIDE A | SIDE B | SAND | MIXED MATERIAL | CUBIC INCHES |
| 4 OZ | 4 OZ | 16 OZ | 17.5 OZ | 32 |
| 8 OZ | 8 OZ | 32 OZ | 35 OZ | 64 |
| 16 OZ | 16 OZ | 64 OZ | 70 OZ | 128 |
| 1/2 GAL | 1/2 GAL | 2 GAL | 2.2 GAL | 508 |
| GAL 1 | 1 GAL | 4 GAL | 4.4 GAL | 1016 |
ORDERING INFORMATION
ROADWARE 10 MINUTE CONCRETE MENDER™
| Item Number | Kit |
| 80300 | 300x300ml twin cartridge |
| 80020 | 2 gallon kit in one gallon cans |
| 80040 | 4 gallon kit in one gallon cans |
| 80050 | 10 gallon kit in 5 gallon cans |
Roadware MatchCrete™ Concrete Mender in safety yellow color is used for permanent line marking in cold storage and freezer floors.
