Low-VOC epoxy adhesive for structural bonding and concrete repair Sikadur-31+ is a two-part, low-VOC, moisture-tolerant epoxy structural adhesive which bonds to many construction materials. It is also used for structural concrete repairs, joint filling, and crack sealing. It can be used in both do-it-yourself (DIY) and professional applications. - Easy to mix and apply
- Very low VOC (GEV Emicode EC1 PLUS )
- Very good adhesion to many construction materials
- Very good initial and ultimate mechanical strength...
- Suitable for structural concrete repair, class R4 according to EN 1504-3:2005 (Structural and non-structural repair).
- Good adhesion to dry and mat damp concrete.
- Thixotropic: non-sag in vertical and overhead applications.
- No primer required.
- Good resistance to abrasion.
- Good resistance to specific chemicals.
- Differently coloured components for mixing control.
- Impermeable to most liquids and water vapour.
- Hardens without shrinkage.
- Application up to 30 mm thickness in one layer.
- Temperature application range +10 °C to +30 °C.
|
Usage The Product is used as an adhesive for: - Structural concrete repair (Principle 3, Method 3.1 of EN 1504-9). Repair of spalling and damaged concrete in buildings, bridges, infrastructure and superstructure works
- Structural strengthening (Principle 4, Method 4.3 of EN 1504-9). Bonding plate reinforcement
- Structural strengthening (Principle 4, Method 4.4 of EN 1504-9). Increasing the bearing capacity of the concrete structure by adding mortar
The Product is used for bonding the following materials: - Concrete.
- Natural stone.
- Ceramics.
- Fibre cement.
- Mortar.
- Brick masonry.
- Brick slips.
- Steel.
- Iron.
- Wood.
The Product is used for repairing and reprofiling: - Structural concrete elements such as beams, columns, and walls.
- Non-structural concrete elements.
- Small patches and edges.
The Product is used for filling and sealing: - Joint arrises.
- Crack arrises.
- Non-structural static cracks.
- Holes.
- Voids.
Advantages - Easy to mix and apply
- Very low VOC (GEV Emicode EC1PLUS)
- Very good adhesion to many construction materials
- Very good initial and ultimate mechanical strength...
- Suitable for structural concrete repair, class R4 according to EN 1504-3:2005 (Structural and non-structural repair).
- Good adhesion to dry and mat damp concrete.
- Thixotropic: non-sag in vertical and overhead applications.
- No primer required.
- Good resistance to abrasion.
- Good resistance to specific chemicals.
- Differently coloured components for mixing control.
- Impermeable to most liquids and water vapour.
- Hardens without shrinkage.
- Application up to 30 mm thickness in one layer.
- Temperature application range +10 °C to +30 °C.
Packaging | 1.2 kg (A+B) container | 8 × 1.2 kg carton box 32 boxes per pallet - 256 pieces | | 6 kg (A+B) container | 96 containers per pallet | | 20 kg (A) container | 22 containers (A) per pallet | | 10 kg (B) container | 44 containers (B) per pallet |
Colour Part A | White | Part B | Dark grey | Part A+B mixed | Concrete grey |
|
Technical Information Compressive Strength | Curing time | +10 °C | +23 °C | +30 °C | | 1 day | - | ~50 MPa | ~50 MPa | | 3 days | ~50 MPa | ~65 MPa | ~70 MPa | | 7 days | ~70 MPa | ~75 MPa | ~78 MPa |
Tensile Strength | Curing time | +10 °C | +23 °C | | 1 day | - | ~8.5 MPa | | 3 days | ~6 MPa | ~16 MPa | | 7 days | ~16 MPa | ~20 MPa |
Shear Strength | 50° | ~35 MPa | | 60° | ~30 MPa | | 70° | ~25 MPa |
Tensile adhesion strength | Curing Time | Substrate | Curing Temperature | Adhesion strength | | 7 days | Concrete dry | +23 °C | > 5 MPa * | | 7 days | Concrete mat damp | +23 °C | > 5 MPa * | | 7 days | Steel | +23 °C | > 20 MPa |
* 100% concrete failure - no failure of the Product.
Lap Shear Strength 50° | ≥ 60 MPa | 60° | ≥ 70 MPa | 70° | ≥ 80 MPa |
Shrinkage 3.0 MPa (Restrained shrinkage / expansion) | (EN 12617-4) |
Coefficient of Thermal Expansion 4.8 × 10-5 (±0.2 × 10-5) 1/K | (EN 1770) |
Glass transition temperature
Chemical Resistance Resistant to many chemicals. Contact Sika Technical Services for additional information.
Reaction to Fire Class C-s1, d0 Class Bfl-s1 | (EN 13501-1) |
|
Application Information Mixing Ratio Part A : Part B = 2 : 1 by weight or volume Layer Thickness 30 mm maximum. For non-structural adhesive or other applications, if layer thickness’s of >30 mm are required, apply in successive 30 mm layers or once the previous layer has hardened. The surface of the freshly applied intermediate layers should be scratched to form a key for subsequent layers. If layer application is to be longer than 2 days, the wet applied adhesive must be blinded to excess with quartz sand immediately after application Sag Flow Non-sag up to 20 mm thickness on vertical surfaces | (EN 1799) |
Product Temperature Maximum | +30 °C | Minimum | +10 °C |
Ambient Air Temperature Maximum | +30 °C | Minimum | +10 °C |
Dew Point Beware of condensation. Steel substrate temperature during application must be at least +3 °C above dew point. Substrate Temperature Maximum | +30 °C | Minimum | +10 °C |
Substrate Moisture Content Substrates must be dry or matt damp (no standing water). Brush the adhesive well into the substrate if matt damp. Pot Life | Temperature | Pot Life | | +23 °C | ~60 minutes | | +30 °C | ~45 minutes |
Open Time | Temperature | Open Time | | +23 °C | ~75 minutes | | +30 °C | ~45 minutes |
|
The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
