Green concrete primer, sealer and curing compound
abeprime GCP is a twin pack water-borne epoxy. The product is diluted before use. It may be further diluted.
abeprime GCP is based on a modified amine curing agent.
Uses:
abeprime 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 abeprime 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 500 ml @ 25 °C | 60 min |
| Volume Solids (diluted) | 50% |
| Recommended average DFT per coat | 100µm |
| Coverage for above DFT | Approx. 5 m2/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). | 0.53 kg/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 1,5 MPa 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 1.7 L clean water (approximately a volume equivalent the volume to top up container to 5 L) 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 (1.3 L 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 abeprime GCP needs to be protected from direct sun exposure.
Handling & Storage
abeprime 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
abeprime GCP is a twin pack water-borne epoxy. The primer for green concrete, sealer for porous cured concrete and curing compound will be abeprime GCP, applied in accordance with a.b.e.®’s 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.® sales representative.
Important Note
This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® endeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot accept any liability for application – because a.b.e.® has no direct or continuous control over where and how a.b.e.® products are applied.
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.® has a wealth of technical and practical experience built up over the years in the company’s pursuit of excellence in building and construction
technology.