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Key technical facts
- Coverage
- Consumption varies depending on use.
- Mixing Ratio (by weight)
- A/B (75/25)
- Pot Life (min., 23°C, 100 ml)
- 50-90
- Drying Time (23°C) – Touch Dry (Hours)
- 5-7
- Drying Time (23°C) – Full Cure (Weeks)
- 1
- Mixed Density (g/cm³, 20°C)
- 1,75 ± 0,10
Last updated:
This page has been translated from the product's original information. Please refer to the technical data sheet for binding technical values.
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Description
Epoxy-based, two-component bonding and assembly mortar. It is used for anchoring all types of rebar and setting anchor elements; for repairing and sealing concrete cracks and sealing cracks during crack injection; for all types of structural concrete repair; for mounting and bonding all kinds of metal parts to concrete or steel elements; and as an expansion joint tape adhesive.
Advantages
- Contains no solvents.
- Easy to use and apply.
- Has high mechanical strength.
- It is waterproof.
- Adheres even to damp surfaces.
- Excellent adhesion to concrete and steel.
- Does not shrink.
- Accommodates floor stresses caused by temperature differences and is not affected by them.
- Application is faster because there is no need to apply adhesive mortar to the back of the panels.
- Resistant to freeze-thaw cycles.
- Thanks to its thixotropic properties, it does not sag on vertical surfaces.
Application Areas
- For all types of rebar anchoring.
- For setting anchoring elements.
- For repairing and sealing concrete cracks, and for sealing cracks during crack injection.
- For all types of structural concrete repair.
- For assembling and bonding all kinds of metal parts to concrete or steel elements.
- As an expansion joint tape adhesive.
Technical Properties
| Number of Components | 2 |
| Mixing Ratio (by weight) | A/B (75/25) |
| Mixed Density (g/cm³, 20°C) (TS EN ISO 2811-1) | 1,75 ± 0,10 |
| Pot Life (min., 23°C, 100 ml) (DIN 16945) | 50-90 |
| Drying Time (23°C) (TS 4317) | |
|---|---|
| Touch Dry (Hours) | 5-7 |
| Full Cure (Weeks) | 1 |
| Thinner | Must not be diluted with thinner. |
Mechanical Properties
| Bond Strength (Pull-off) (N/mm²) (TS EN 1542) | ~ 2,5 (concrete failure) |
| Shore D (ASTM D 2240) | ~ 77 |
| Compressive Strength (N/mm²) (DIN EN 196) | 60-80 |
Surface Preparation and Application
- Surface preparation: Surfaces to be coated must be free of oil, rust, dust and similar contaminants. No loose layer may remain on the surface to be coated.
- Mixing: After components A and B have each been stirred in their own containers, pour all of component B into component A and mix for at least 3 minutes until the two components form a homogeneous mixture. Mixing at low speed is recommended to prevent air bubbles from forming in the mixture.
- Use as an expansion joint tape adhesive: The mixed adhesive is applied with a spatula or trowel. Using a laminating roller or spatula, the adhesive is worked up through the perforations of the expansion joint tape. Concrete must be placed before the adhesive cures (i.e. as long as a finger still sinks in and feels tacky when touched).
- Bonding metal profiles to vertical surfaces: Depending on the surface and room temperature, the profiles are supported by pressing with clamps and/or props for at least 12 hours.
- Anchoring: Where a new column, beam or shear wall is to be built on concrete, holes or channels are drilled into the concrete, cleaned of dust and filled with the epoxy adhesive/assembly paste DEMCO EPOX 283 DBA, and the anchor bars are quickly inserted.
Application Conditions
- Working area temperature must be 15°C – 30°C.
- The ideal temperature of the floor to be coated should be 15°C – 30°C. The temperature must never be below 10°C.
- For indoor and outdoor applications, substrate temperature, ambient temperature and ambient humidity must be taken into account.
- A suitable amount of mixture should be prepared during work, and work should continue until the entire mixture has been used.
- The full curing time of DEMCO EPOX 283 DBA applied at 20°C – 25°C is 7 days on average.
Coverage
Consumption varies depending on use.
Storage and Shelf Life
Store in unopened original packaging at 15 – 25°C in dry, enclosed warehouses away from direct sunlight. Shelf life is 1 year.
Packaging
Available in 5 and 25 kg packaging.
Safety Precautions
Avoid contact of the mixture or its components with skin and eyes; in case of contact, rinse with plenty of water and seek medical advice. Wear protective gloves, clothing and goggles; keep the product out of the reach of children.
Approvals / Standards
Tested according to EN 1504-2 within the scope of CE certification.
