Copps K-070 Crete Patch

K-070 Crete Patch is a versatile three component, 100 % solids epoxy with a stiff, non-sag consistency that trowels easily on vertical or overhead surfaces. K-070 patches a wide variety of materials.

K-070 Crete Patch adheres tightly to concrete, asphalt, wood, aluminum, steel, and most other construction materials. It bonds tightly to wet surfaces, working even underwater. It is resistant to impact - reducing chipping and spalling - and will not shrink, crack, or become brittle with age. A high compressive strength – 7,000 psi - means K-070 Crete Patch withstands heavy loads. It finishes to a textured surface that is slip and abrasion resistant.

K-070 is used to patch or repair cracked, spalled or corroded surfaces. Because it is a smooth, non-sag paste, K-070 may be applied to vertical, horizontal, or curved surfaces. K-070 Crete Patch may be used to make wet or dry repairs to pipes, pumps, valves, and tanks, including swimming pools. In addition, it will repair worn concrete or blacktop.

Little surface preparation is needed when using K-070 Crete Patch. It has a work life of one hour. The repaired area is ready for service overnight. Solvents such as isopropanol, xylene, or toluene can be used to smooth the surface.

PACKAGING CONVENIENCE

GP-ADHESIVE is packaged in two-gallon (7.57 l) pre-measured kits of resin and hardener. To use, simply mix the resin and hardener in a 1:1 ratio by volume and apply. Unmixed material remaining in the cans may be resealed for future use.

WORKING TIME

The working time (th° time you have before it sets) of GP-ADHESIVE will vary according to the air temperature. The average working time at 70 °F (21 °C) will be 45 minutes for approximately 1 pint (0.5 l) of mixed material. In cooler weather, you will have more time to work with the material, and in hotter weather you will have less time.

CURE TIME

The cure time (the time before the parts can be used) will also depend on the air temperature and the temperature of the parts themselves. The average cure time from the last application to start-up at 70 °F (21 °C) will be 4 to 5 hours. Preheating the parts will accelerate the cure time. Do not heat parts hotter than 100 °F (38 °C).

PACKAGING / YIELD

K-070-35: 2.5 gal = 555 in.3
K-070-160: 11 gal = 2,531 in.3

HANDLING PROPERTIES @ 72°F
COMPONENTS Resin/Hardener/Aggregate  
COLOR Light Gray  
MIXING RATIOS  
Resin/Hardener, pbw (pbv) 1/1.4 (1/1.3)  
Resin+Hardener/Aggregate, pbw (pbv) 1/1 (1.4/1)  
APPLICATION THICKNESS, in. 1/8-1 or greater  
WORKING TIME, h 1  
TACK-FREE TIME, h 4-6  
CURING TIME, h 16-24  
COVERAGE @ 1/8 in. thick, ft2/lb 0.87  
TYPICAL CHARACTERISTICS
COMPRESSIVE STRENGTH, psi 7,000 ASTM D 695
HARDNESS, Shore D 60 ASTM D 2240

APPLICATION INSTRUCTIONS

SURFRACE PREPARATION

The surface must be free of rust, scale, dirt, dust, grease, oil and release agents. For molding or casting purposes, coat the mold surface with a release agent. If appearance is not a factor, coat the surface with a suitable wax or grease. If appearance is important, you should use a commercially available release agent.

MIXING & APPLICATION

Do not use partial kits. If kits are colder than 60 °F, preheat them in hot tap water to a maximum of 90 °F. Higher temperatures will reduce the working time. Do not use a torch to heat kits. Empty all of the hardener into the resin.

Mix with a paddle and a heavy-duty low speed drill until uniform, usually 2-5 minutes. Incomplete mixing results in poor curing and soft spots. Slowly add the aggregate and mix until uniform.

If you need less than a complete kit, do not attempt to "eyeball" the mixture. Accurately weigh or measure the resin and hardener following the mixing ratios under HANDLING PROPERTIES.

Cure time may be shortened by applying heat with a hot air blower or heat lamps. Do not exceed 120 °F.

CLEAN-UP

K-070 Concrete Patch, before it has hardened, can be removed from tools with Copps Enviro Kleen solvent.

SAFETY PRECAUTIONS

Avoid breathing of vapors. Forced local exhaust is recommended to effectively minimize exposure. NIOSH approved, organic vapor respirators and forced exhaust are recommended in confined areas, or when conditions (such as heated polymers, sanding) may cause high vapor concentrations. DO NOT WELD ON, BURN OR TORCH ON OR NEAR ANY EPOXY MATERIAL. HAZARDOUS VAPOR IS RELEASED WHEN AN EPOXY IS BURNED.

Read and understand all cautions on can labels and material safety data sheets before using this material.

WARRANTY AND DISCLAIMER

Copps Industries, Inc. gives no warranty, express or implied, and all products are sold upon condition that purchasers will make their own tests to determine the quality and suitability of the product. Copps Industries, Inc. shall be in no way responsible for the proper use and service of the product. The information given in this publication is considered to be accurate and reliable and is provided as a service only. Physical properties shown are typical. Actual properties are dependent on curing conditions and degree of cure. Any information or suggestions given are without warranty of any kind and purchasers are solely responsible for any loss arising from the use of such information or suggestions. No information or suggestions given by us shall be deemed to be a recommendation to use any product in conflict with any existing patent rights.

TB#4070 (03/12/09)