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ROADWARE 10 MINUTE CONCRETE MENDER 10 GAL UNIT

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ROADWARE 10 MINUTE CONCRETE MENDER

Two component, high penetration polyurethane for crack, spall, and surface repair.

 

Description:

Roadware 10 Minute Concrete Mender is a high-penetration two-part hybrid urethane that combines with sand to form a tough instant polymer concrete. This nearly water thin formula is designed to break the surface tension of concrete thus creating extremely high bond strengths and permanent repairs.

Roadware 10 Minute Concrete Mender produces polymer concrete repairs that absorb the shock of heavy traffic without cracking or disbonding. It is highly chemically resistant and can be applied in a wide range of temperatures. It is excellent for industrial floor repairs subject to forklift traffic and harsh conditions.

Uses:

  • Repairing hairline cracks or larger, where future movement is not anticipated.
  • Restoring integrity to distressed concrete.
  • Connecting broken slabs.
  • Repairing moving slabs.
  • Repairing spalls and pop-outs in concrete.
  • Securing bolts, equipment, or railings into concrete.
  • Vertical repairs when combined with specified sand.
  • Repairing concrete surface imperfections prior to coating.

Features:

  • Extremely low viscosity allows deep penetration into concrete.
  • All material is self-mixed and delivered at the point of application. No messy pot-mixing or wasted product.
  • When combined with manufactured sand, Concrete Mender will form a tough 4500 psi polymer concrete with similar properties to existing concrete that will stay pliable over time.
  • Safe to use. Materials react quickly with very low odor.
  • Self-leveling or may be combined with sand and worked with a trowel.
    Completely cures in 10 minutes after application at 70° F. Will also cure rapidly in subzero environments.

Benefits:

  • Long lasting repairs that accommodate harsh physical environments.
  • Easy preparation, a wire brush is all that is needed in most cases.
  • No downtime, repairs are fully ready for traffic in approximately 10 minutes from application.
  • Very low odor, can be used in a wide range of indoor areas.

Limitations:
10 Minute Concrete Mender is designed for use on interior or exterior concrete surfaces. It is not intended for repairing areas of movement such as exterior cracks and joints subject to regular freeze /thaw cycling. It must be applied to concrete free of surface moisture.

Packaging:
10 Minute Concrete Mender

  • 21 fl oz. dual cartridge units (600 ml) with mixer (80300)
  • 2 gallon units in two parts (80040)
  • 10 gallon units in two parts (80050)

Technical Data:

Typical Properties

Value

ASTM Test

Hardness @ 72° F. (22° C)

72D

na

Compressive Strength

31 Mpa

C 881

Tensile Strength

30.8 Mpa

D 412

Elongation

6%

D 412

Bond Strength

13.6 Mpa

C882-99

Viscosity

<8 cps

na

VOC

5.5 g/l

na

Surface Tension

0.026 N/m

D 971

Gel time @ 72° F (22° C)

6-7 min

na

Cure time @ 72° F (22° C)

10 min

na

Ambient temperature range for application

-30C  to 43C°F

na

Solids

98%

na

 

Yield

Part A

Part B

With 40-30 grit manufactured sand

Total Yield

1 liter

1 liter

4 liter

4.4 liters

1 liter

1 liter

0

2 liters

1 gallon

1 gallon

4 gallons

4.4 gallons



Installation:
Application Temperature: Recommended application temperature is between 0° F and 100° F (-18° to 38°C). It is best to keep material at room temperature (60° to 80° F) prior to application. If manufactured sand is to be used with product, it also should be kept at room temperature. Avoid frost laden surfaces as this may adversely affect bonding and curing. 10 Minute Concrete Mender will fully cure in 10 minutes at 72° F (22° C). Cure time is affected by the temperature of the material and the temperature of the concrete surfaces. Warmer temperatures will decrease cure time and colder temperatures will increase cure time. In extreamly cold enviroments, heat the concrete to remove frost before application


Preparation:
Surface Cracks (all depths and widths): Cracks should be free of dirt, oils, dust, latents and old crack repair materials. ALL SURFACES MUST BE CLEAN AND DRY. New concrete must be fully cured. A wire brush, twisted wire wheel, or diamond blade attached to an electric hand grinder is recommended for preparing cracks and creating a clean surface for bonding.

Surface Spalls and Deflections: Remove all loose materials back to sound concrete with a chisel or light chipper. DO NOT SQUARE CUT THE REPAIR AREA. If a square appearance is necessary, lightly score surface and remove material. Use a wire brush or twisted wire wheel to clean the repair area. All surfaces must be free of dirt, oils, dust, latents and old repair materials. New concrete must be fully cured.


Mixing:
Cartridges: 10 Minute Concrete Mender is a two component material and must be thoroughly mixed at a ratio of 1 part "A" to 1 part "B" by volume. Mixing and metering of 10 Minute Concrete Mender is achieved with self-mixing cartridges provided by Roadware, Inc. Material is ejected from prepackaged cartridges through a supplied static mixing nozzle with a dual component caulking gun such as the Roadware 5300 Application Tool, Mixed material is applied directly into the repair area immediately after mixing.

Bulk: Due to the rapid setting nature of the product, pot-mixing of the components is not recommended for crack and joint repairs less than 3/4" in width. 10 Minute Concrete Mender supplied in 10 gallon kits may be bucket mixed in quart batches and applied immediately to the repair area. Combined one pint of Part A with one pint of Part B. Mix with a drill mixer or hand mixing stick for 30 seconds or until well blended. Add 2 quarts of manufactured sand and mix for an additional 10 seconds. Pour the entire batch into the repair area immediately. SEE BULK MIXING INSTRUCTIONS INCLUDED WITH MATERIAL. 10 Minute Concrete Mender may be dispensed through a one-to-one ratio pump specifically designed to handle extremely low viscosity materials while maintaining exact ratios. The system must not allow the two components to combine until they reach the point of delivery. Contact Roadware for information on acceptable pumping equipment. All pumping equipment must be approved by Roadware, Inc. prior to application.


Application Methods:
Surface cracks (all depths and widths): Assemble cartridge according to directions. Holding the SYLCAT application gun upward, place cartridge set into gun. Gently squeeze trigger to bleed-off air and start material flowing into mixers. Point mixer into waste container and squeeze trigger to start mixing process. DO NOT POINT MIXER UPWARD AFTER MATERIAL IS FLOWING. This may cause material to flow back into the tubes and cause clogging.

Pre-wet repair area with material. Fill with 30-40 grit manufactured silica sand and additional material to grade. Be sure to saturate all of the sand completely. Additional sand may be added to the repair as necessary. Saturated sand may be moved into place with a small squeegee or scraper. Work with one small section at a time. Do not stop flowing material for a period of more than 2 minutes. If material sets inside mixer, remove cartridge from gun and replace mixer.

Fill all repair areas to grade. When material cures (turns gray) in about 10 minutes, remove excess material with a sharp scraper for a smooth and flat finish.

Spalls: Pre-wet repair area with mixed Concrete Mender without sand. Fill with 30-40 grit manufactured silica sand and additional material to grade. Be sure to saturate all of the sand completely. Additional sand may be added to the repair as necessary. Saturated sand may be moved into place with a small squeegee or scraper. Work with one small section at a time. Do not stop flowing material for a period of more than 2 minutes. If material sets inside mixer, remove cartridge from gun and replace mixer. A trowel or scraper may be used to move saturated sand into place and to create a level surface. If required, surface friction may be maintained by adding additional manufactured to the surface as the material cures. Allow to cure (approximately 10 minutes). Finished repairs may be "cleaned up" by sanding or buffing within a few hours of application.

Color:
10 Minute Concrete Mender is composed of an amber colored liquid and a violet colored liquid. The material is black when dispensed and cures to a gray finish. Alternate colors can be achieved by selecting different colors of manufactured sand. 10 Minute Concrete Mender will lighten in color when exposed to ultraviolet rays. This natural occurrence within urethanes will NOT effect the physical properties of the material or the repair.

Clean Up:
Clean all tools and equipment immediately after use with acetone, xylene, MEK, or toluene. Cured material may be removed by soaking or abrading. 10 Minute Concrete Mender is very aggressive, gloves should be worn to keep material from contacting skin. Use an industrial paint and stain hand cleaner to remove from skin.

Curing:
10 Minute Concrete Mender will cure in approximately 10 minutes from application at 72° F for most traffic situations. The material will reach it's full strength in 24 hours. Cure rates in extremely cold environments should be tested beforehand.

CAUTION:
Roadware 10 Minute Concrete Mender Part A contains diphenylmethane-diisocyanate (MDI) CASS# 101-68-8, napthelene CASS# 91-20-3, and petroleum hydrocarbon CASS# 64742-94-5.

Risks:
Inhalation of mists and vapors may cause dry throat, cough, dizziness, headache, nausea, unconsciousness and other central nervous systems effects. MDI can induce respiratory sensation with asthma-like symptoms. Repeated and prolonged contact with skin can cause irritation.

Emergency And First Aid Procedures:
Eye contact - flush eye with water for at least 15 minutes. Get medical attention promptly. Inhalation - remove person to fresh air, if breathing is difficult administer oxygen. Get medical attention immediately. Skin contact - wipe off and wash thoroughly contacted area with soap and water. Ingestion - do not induce vomiting. Consult physician immediately.

Precautions:
Provide adequate ventilation to keep the airborne concentration of diisocyanate below TLV limit. For concentration above TLV limit, use of a positive pressure self- contained breathing apparatus (SCBA) or NIOSH/MSHA approved positive pressure supplied air respirator with a full face piece and escape (SCBA) required. Use protective equipment to minimize skin contact. Wear chemical safety goggles, and laboratory coats or aprons to avoid skin contact. Provide access to safety shower and eye wash stations.

SEE MSDS SHEETS FOR FURTHER INFORMATION.

CAUTION:
Roadware 10 Minute Concrete Mender Part B contains napthelene CASS# 91-20-3, and petroleum hydrocarbon CASS# 64742-94-5

Risks:
Inhalation of mists and vapors may cause dry throat, cough, dizziness, headache, nausea, unconsciousness and other central nervous systems effects. Repeated and prolonged contact with skin can cause irritation.

Emergency And First Aid Procedures:
Eye contact - flush eye with water for at least 15 minutes. Get medical attention promptly. Inhalation - remove person to fresh air, if breathing is difficult administer oxygen. Get medical attention immediately. Skin contact - wipe off and wash thoroughly contacted area with soap and water. Ingestion - do not induce vomiting. Consult physician immediately.

Precautions:
Provide adequate ventilation to keep the airborne concentration of diisocyanate below TLV limit. For concentration above TLV limit, use of a positive pressure self- contained breathing apparatus (SCBA) or NIOSH/MSHA approved positive pressure supplied air respirator with a full face piece and escape (SCBA) required. Use protective equipment to minimize skin contact. Wear chemical safety goggles, and laboratory coats or aprons to avoid skin contact. Provide access to safety shower and eye wash stations.

Frequently Asked Questions

1. How big a crack can I fix?
Roadware 10 Minute Concrete Mender can repair cracks and spalls of all depths and sizes. In over 20 years we have not encountered a job too big, too deep, or too wide for Concrete Mender. We have even used solid Concrete Mender to support railroad weigh scales for Burlington Northern.

2. Can I use Mender for an overlay?
Only in small areas. While it is possible to apply 10 Minute Concrete Mender over large surfaces, we do not recommend the material for general overlay use. The rapid curing nature of Concrete Mender makes smooth coatings over a large area difficult. The material itself was not designed as an overlay. Mender is excellent for repairing floors before coatings are applied.

3. How about using Mender in a freezer?
Yes, 10 Minute Concrete Mender works great in freezers and coolers. Use the same techniques that are used in normal floors with the following exceptions. Keep the material and sand at room temperature (70-80° F), and allow for extra curing time. Make sure the floor dry and free from frost or ice. Use a propane torch or electric heat guns to dry the repair area if needed.  Contractors have used mender in flash freezers (-30°F) with excellent results. For detailed informations, see Cold Storage and Warehouse Applications.

4. What is the shelf-life of Concrete Mender?
With recent changes in Roadware packaging and scheduling, over 90% of Roadware cartridges are packaged and shipped within 72 hours. That means you will always get fresh cartridges when you order product. We guarantee the shelf life of factory sealed Roadware products for one year when stored properly. Of course we rarely find any cartridges sitting on the shelf that long. Roadware bulk materials packed in steel cans will last for one year or longer when stored in a cool dry place. Be sure to mix side “A” and side “B” separately before use. Opened containers should be resealed with a head of dry grade nitrogen to prevent moisture contamination. Nitrogen is available from welding supply dealers. You will need a tank, a regulator, and an air hose with a trigger valve on the end. Just before resealing the cans, shoot in a little nitrogen. Your Concrete Mender will be fresh and ready to go for the next job.

5. Can I get extra instruction sheets?
Yes, many distributors sell partial cases of product. Roadware wants every end user to have an instruction sheet. If you need extra copies, call Roadware at 800-522-7623. We will send them out ASAP.

6. Can we link our web site to your web site?
Yes, Roadware encourages distributors and customers to use our Internet web site for the latest product information, specifications, and SDS sheets.

7. Can 10 Minute Concrete Mender be air shipped?
Yes. Both 10 Minute Concrete Mender and Flexible Cement II are non IATA/DOT regulated and non-hazardous. They may be shipped standard air freight. We recommend using the original shipping containers and including the SDS sheets on the outside on the box with the packing list just in case the box gets severely damaged and product should leak out. Do place Roadware products in your personal checked or carry-on luggage.

8. Where can I get sand for Concrete Mender?
Good sand can be found at most places that supply the sandblasting industry. The best sand is dry white silica/sandblasting sand with a gradation close to table sugar. For hairline crack repairs a finer sand can be used. For larger repairs a courser sand will work. Do not use play sand, beach sand or concrete sand. They contain too much dust and moisture. If you do not have the proper sand in your area, we can arrange for sand to be purchased and shipped from the Chicago area.

9. Why the clear cap on the Concrete Mender?
The clear cap has three functions. It protects the cartridge when it is out of the shipping case. It holds the flow restrictor in place when packaged. And it can be used to catch drips from the end of the mixer when moving from crack to crack.

10. Can I reuse the mixer?
Yes, Mender only. If you immediately remove the mixer from the cartridge and empty it out completely, the mixer can be reused. The same goes for the flow restrictor. With Flexible Cement II, you can use the same mixer with multiple cartridges if you work fast. This will reduce the small amount of material left in each used mixer.

11. Can I buy Concrete Mender  to repair my driveway?

Products like 10 Minute Concrete Mender are designed for the concrete repair professional. They require training in the safe use of highly reactive two-component polyurethanes and advanced application techniques. While our videos make it all look easy, there is more involved for a successful application. This includes choosing the proper product for the repair, understanding how the concrete problem occurred and what the conditions are likely to be in the future.  We do not recommend use of Roadware products inside the home or in residential applications without the assistance of a trained and experienced professional. Your local Roadware distributor can assist you in choosing proper products and professional installers.


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