Green Concrete Primer, Sealer and Curing Compound

abe.®prime GCP is a twin pack water-borne epoxy. The product is diluted before use. It may be further diluted.

abe.®prime GCP is based on a modified amine curing agent.

abe.®prime GCP may be used as a primer for green concrete, sealer for porous cured concrete and curing compound for freshly poured concrete which does not have to be removed for subsequent top coating. Primer may be applied within 24 hours of concrete pour. Top coats have included Terrazzo and self-levelling floor formulations may be applied within 2 days of primer application.

Advantages
  • Water-borne (Zero VOC)
  • Rapid Thin film set time
  • Excellent adhesion to green concrete
  • Acts as a Concrete Curing Compound, Sealer and Primer all in one
  • Broad recoat window with excellent inter-coat adhesion:
    • Recoat at from 14 hours to 28 days and beyond; No surface prep.
    • Epoxy and polyurethane topcoats have excellent adhesion to abe.®prime GCP primed surface. Failure occurred within concrete
  • Strengthens Concrete by Promoting Hydration
  • Eliminates the need for and cost of Shot-Blasting
Properties of Wet Material
Mixing ratio Do not split kit
Density 1.089 undiluted
Colour Base: Clear
Activator: Clear Amber
Mixed : Straw-yellow emulsion
Dilute : Straw-yellow/green emulsion
Dilution As per instructions under ”mixing”
Flash point None
Consistency Mobile liquid
Properties During Application
Pot Life 500ml @ 25°C 60 min
Volume Solids (diluted) 50%
Recommended average DFT per coat 100µm
Coverage for above DFT Approx. 5m2/L (substrate dependant)
Recommended no. of coats One
Drying time @ 25°C Tack- Free Hard Approx. 1 hr Approx. 5 hrs
Over coating time from 14 hours to 28 days
Application temperature range 5°C to 35°C
Properties of Cured Material
Maximum service temperature 60°C
Colour Cures to a Matte Finish
 
Adhesion*
Laitance left intact
Laitance removed (stiff bristle brush)
Shallow cohesive failure of concrete
Deep cohesive failure of concrete
Typical water loss of coated concrete specimens (as a curing membrane). 0.53kg/m2 (ASTM C 156-98 compliant)
Weather resistance Chalks on exposure to ultra-violet light or sunlight

*Controlled design strength concrete with laitance minimised through limited towelling.

Surface Preparation

The concrete must be of good concrete design strength (not less than 1,5MPa tensile pull-off strength at 28d). Since one cannot fully control nor limit the degree of surface laitance on trowelled concrete screed, it is advisable to lightly “sweep off” any laitance from the surface of the newly laid screed as soon as it is possible to walk on the surface without creating any surface damage.

Mixing

To develop the formulation, mix the liquid epoxy resin base (clear component) into the curing agent (amber clear component). This will result in a thick emulsion. Mix the emulsion thoroughly. Add 1.7L clean water (approximately a volume equivalent the volume to top up container to 5L) to the thick emulsion: add the water slowly in four portions, making sure that each portion is properly incorporated before the next one is added. The primer will now be 50% solids in water. It may be thinned with additional water to 40% solids if desired (1.3L extra water). Ensure that the mixing vanes are below the surface of the mix to minimize air entrapment. The stirrer mixing vane configuration should be such as not to introduce unwanted aeration. Mixing speed is moderate/high in the initial mixing stage, but should be lower when the system thins out to avoid splashing.

Application

The primer may be applied as soon as the surface is finished and it can be walked on without leaving a mark (generally 24 hours after the trowel and broom finish and three days from pour to allow for the mild shot blast finish). The concrete surface may be damp but not wet (i.e., no visible puddles). The resulting emulsion is either brushed or rolled onto the concrete. It can also be sprayed or applied with a squeegee followed by back-rolling.

Use as a Primer:

Follow instructions as outlined above, but preferably use a 50% solids dilution.

Use as a Sealer:

When used as a sealer, it is best applied to 28 days cured and dried concrete with all surface laitance removed. It is preferable to use the 40% solids dilution. Depending on the quality of the concrete, it may take several applications.

Use as a Concrete Curing Membrane:

Follow instructions as outlined above, but preferably use a 50% solids dilution.

Cleaning

Water while wet.

Protection on Completion

Protect surface against traffic and spillage until cured.

Limitations

Will chalk on weathering exposure, so cured abe.®prime GCP needs to be protected from direct sun exposure.

Handling & Storage

abe.®prime GCP has a shelf life of 24 months if kept in a dry, cool store in the original, unopened packs. If stored at high temperatures and/or high humidity conditions, the shelf life may be reduced.

Model Specification

abe.®prime GCP is a twin pack water-borne epoxy. The primer for green concrete, sealer for porous cured concrete and curing compound will be abe.®prime GCP, applied in accordance with a.b.e.® Construction Chemicals’ recommendations.

Health & Safety

Product safety information required for safe use is not included. Before handling, read product and safety data sheets and container labels for safe use, physical and health hazard information. The safety data sheet is available from your local a.b.e.® Construction Chemicals sales representative.

Important Note

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicalsendeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® has no direct or continuous control over where and how a.b.e.® products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® products, whether or not in accordance with any advice, specification, recommendation, or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. a.b.e.® Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.