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Product Description

6012-2S Slow Set Epoxy Primer & Grout For Warm Temps and Damp Conditions

6012-2S is a unique multi-use product designed as an epoxy primer and grout for a wide variety of warm & damp conditions.  It is a summer grade 2 component, 100% solids, moisture tolerant advanced polymer.  The resulting polymer structure is high strength, very adhesive, fast set, moisture tolerant, extremely tough with superior chemical resistance to corrosive waters, deicing chemicals, most aircraft and many truck and automotive chemicals including many acids. The 6012-S Epoxy is designed to provide penetration, wetting and sealing of substrates and surfaces as a fast set,  high quality epoxy primer and cross link to various polyurea and urethane top coats when properly and timely applied.    Cured film conforms to USDA requirements for coatings in incidental contact with food. As a primer, the 6012-2S is also used on cleaned surfaces for bridge joint applications prior to the application of ASTC polyurea joint products (3003, 3004, 3246). 6012-2S is one of the components of the fast set polyurea spray systems where the substrate requires a low viscosity penetrating moisture tolerant primer (1006, 1007).    The 6012-2S is an excellent primer for the ASTC Nova Bar barrier protective coating systems. As an airfield grout 6012-2S meets FAA-P606 requirements for bonding in-pavement airfield light fixture bases into concrete pavement, kerfs, docking systems for taxi ways & landing zones.   The product is also used for rapid repair in damp conditions on exterior concrete slabs, airfields, etc. or on interior floor applications where the concrete surfaces have been damaged and aggregate is exposed. May be brush, roller or spray applied. Comes standard in a clear or gray color option.  The 6012 also comes in a fast set version, 6012-F for cold temperature and cold weather applications.  Comes standard in 3 gallon and 15 gallon kits.
Where is 6012-S typically used?

  • Base coat/prime coat – ASTC industrial floor & ESD floors products
  • Primer for ASTC expansion joint products (3246)
  • Polyurea primer
  • Waste holding & treatment areas primer
  • Petrochemical production floors base coat
  • Pulp and paper primer/base coat
  • Airfield Lighting & Grout Applications
  • Food processing areas repair
  • Concrete repair & “knitting”
  • Damp conditions sealing

Why 6012-S?

  • Advanced curing agent – warm conditions
  • Not moisture sensitive and can be used in damp areas
  • Rapid development of strength
  • Quick set and low viscosity
  • Excellent chemical resistance
  • High abrasion resistance
  • Flowable grout mixture
  • Quick Gel time
  • Conforms to USDA requirements
  • High heat deflection up to 200°F
  • 100% solids, no VOC, low odor

Technical Information

Color Clear or Gray color standard
Hardness ASTM D2240 D 65
Set time 8-20 seconds
Tack free ASTM D2471 30 seconds
Solids 100%
Mix ratio 2:1
Application method Spray, roller, trowel as grout
Surfaces Applied to Concrete, steel
Solids 100%
Application Temperature 35°F  to 125°F
Tensile ASTM D638 psi >1500 – prep metal
Concrete bond elcometer Concrete failure
Coefficient of Liner expansion (ASTM D11608) cm/cm/degC .00040
Viscosity mixed grout/sand Pourable
VOC 0%
Arc resistance (ASTM D495) sec 145
Dielectric strength (ASTM D149) 500  lits/mil
Concrete cure time Minimum 28 days after new pour

Application Instructions

Prepare Steel surface and remove all materials on the surface prior to sand blasting. Sand Blast using the appropriate blasting medium to a near white sand blast per SSPC-SP10/NACE 2. Welds, seams, edges, etc. grind/blast smooth and provide 2 mil profile. Provide a 2 mil profile over the whole of the steel surface to be coated. If sand blasting cannot be used surface grinding or sanding may be substituted provided that the surface is left with a 2 to 3 mil surface abraded profile.

Concrete must have a minimum 28 day cure prior to application. Remove any curing agent, form release materials, oils, wax, moisture or any material that may effect bonding. Clean and wash to remove contaminants and maintain pH 8.0-11.0. *Perform a Moisture Vapor Test before making the coating application on concrete. See ASTC CMW for vapor drive reduction. Clean by abrasive “brush-off” blast.
Provide rough profile minimum 2 mils. Review ASTM D4259 Abrading Concrete and ASTM F1869 Measuring Moisture Vapor Emission. Seal/repair all bug-holes, cracks and spalls, see ASTC data sheets on 830, 4034 and 3004 (joints).

Apply Flash Rust Retarder:
Mix 1 part Retarder to 50 parts of potable water. Apply Retarder mix to the surface using an airless sprayer or water jet sprayer supplied via a pump. Employ the easiest method for surface wash down. The Retarder may also be used in the sand blast medium for wet sand blasting.

Enough product must be mixed and used immediately after sand blasting even if the sand blasting has not been completed on the whole of the surface to be coated. The Retarder will last about 2 to 3 days providing protection against salts for that time.

Start the Retarder wash-down at the highest point of the application to be washed and work down. When the surface has been thoroughly treated and washed with the Retarder allow the surface to dry completely. Remove any puddles or wet spots. Assure that all joints or depressions are completely dry before coating. Maximum standing time before coating not to exceed 48 to 72 hours depending on the dew point of the environment and the humidity (no rain or surface dew). 1 drum of 55 gallons of Rust Retarder will mix with 2700 gallons of water.

Inspect the surface after it has dried. Surface fill imperfections, wields ect.

Mixing the 6012:
This is a plural component product, two parts of A are mixed with one part of B. Do not vary the proportions. Mix only the amount that can be used by the application crew in approximately 20 to 30 minutes. Set time in volume is faster then in thin films. The environmental temperature will effect the set time. High heat will accelerate set times and cool conditions will slow set times. Test the set time if unsure by mixing up a small amount of product at the temperature the product will be used. High volumes of product, if left in a mixing pail, can cause an exotherm and make the product set faster in a mixing pail by building this heat.

Mixing: Jiffy mixer - 650 rpm drill motor to mix product. Use equipment that will allow proper mixing without “spinning” the mixing containers while being mixed. Mix at sufficient speed to thoroughly combine part A and B. Mix until a uniform blend of the two part is evident after adding part B into part A. Do not change the proportions. Mix completely for approximately one to two minutes. Power stir - continue agitation during the applications. Avoid mixing air into the blend.  Mix the product as needed and pour into shallow application trays when using rollers.  Keep the un-mixed and mixed product out of direct sunlight.

Improper mixing may result in product failure.

For best mixing results and proper blending of parts A and B, recommend a Jiffy Mixer style drill mixer.

Application range - 35°F to 125°F (air and surface) and 5°F above dew point. Apply mixed 6012 over properly prepared surface.

Roller/brush: product should be applied using a short nap roller, about 3/8 inch synthetic nap or short hair natural bristle.
Note: The viscosity of the product when mixed is fairly low – Roller apply only as much mixed product that will not “Sag” or run. Re-apply additional coats as soon as the first coat is stable enough to support additional coats. Apply additional coats at 90 degrees to the coat being covered, alternate each coat of product in this way. In proper conditions the time between coats will be an hour +, check and time additional coats as needed to build the required mil thickness for the application. See data sheet for maximum time between coats.

Airless; Graco or equal. Pump ration 30:1 or higher, 206-718 gun with fluid tip of .019 or larger orifice size with a Reverse-A-Clean tip, 3/8 I.D. or larger high pressure solvent resistant fluid line, ½ inch I.D. or larger air supply line. Continuous air source capable of 80 to 100 psi inbound pressure at pump.

Conventional spray; Binks or equal. Pressure material pot with mechanical agitator, dual regulators, air gauges, oil and moisture separators. No. 18 gun (external mix), 67 fluid nozzle, 65 fluid needle, 67 PB air cap, heavy duty fluid spring, Teflon fluid packing, ½ inch I.D. or larger high solvent resistant fluid line and 3/8 inch I.D. or larger air supply line. Continuous air source capable of 20 cfm or more at 80 psi per nozzle and 60 psi to the pot. Apply in an even wet coat. Insure seams and irregularities are completely covered.

Thinning; If thinning is required thin with MEK @ 15% or .94lbs./gal. Primer. Check local VOC regulations prior to thinning.
Apply mixed product in even coat and insure uniform mil thickness. Apply second coat in opposite direction to assure coverage of pin holes. If a third coat is applied change direction again.

Aggregate; When using a "broadcast to refusal" aggregate always use a high quality aggregate with low dust.

Mil Thickness: Application mil thickness is predicated on the surface and the application/service environment and potential contact to harsh chemicals, temperature and length of time of contact Cure 24 hours before opening to immersion or traffic. Accelerate cure by using heaters or increase environmental temperature for faster cure.

Recoating/repair; If material has reached complete cure and hardness, or if subjected to extended exposure to sunlight, uniformly abrade the surface and feather the edges. The surface must be roughen sufficiently to provide a profile adequate to insure a mechanical bond.

Inspection; Check for desired dry film thickness and for pinholes, holidays, bare areas, etc. before placing into operation/service. Use 2500 volt spark detector for thick film laminates on conductive substrates.

Back in Service:  Before placing a tank back in service, thoroughly wash the surface with soap and water, rinse several times and allow to dry. Inspect again before allowing the tank to be placed in use

6012-S Data Sheet


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