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Sika Sikadur 31CF Normal
Sika Sikadur 31CF Normal
Documents
Sikadur-31 CF Normal — Thixotropic Structural Epoxy Adhesive & Repair Mortar
Sikadur-31 CF Normal is a moisture-tolerant, thixotropic, structural 2-component adhesive and repair mortar based on epoxy resins and special fillers. It bonds and repairs concrete, natural stone, steel, wood, ceramics and many other construction materials without primer or sagging on vertical and overhead surfaces.
Key Features
- Moisture tolerant — can be applied on damp substrates
- Thixotropic, non-sag up to 15 mm on vertical surfaces
- No primer needed
- Hardens without shrinkage
- Different coloured components (A: white, B: dark grey) for mixing control
- High initial and ultimate mechanical strength
- Impermeable to liquids and water vapour
- Good abrasion and chemical resistance
Applications
- Structural bonding: concrete, natural stone, ceramics, steel, iron, aluminium, wood, polyester, epoxy, glass
- Repair mortar: corners, edges, holes, voids, vertical and overhead surfaces
- Joint filling and crack arris / edge repair
Technical Data
| Property | Value |
|---|---|
| Chemical base | Epoxy resin |
| Density (A+B mixed, +23 °C) | 1.90 ± 0.1 kg/L |
| Mixing ratio (A : B) | 2 : 1 by weight or volume |
| Compressive strength (7 d / +23 °C) | ~65 N/mm² |
| Flexural strength (7 d / +23 °C) | ~35 N/mm² |
| Tensile strength (7 d / +23 °C) | ~21 N/mm² |
| Tensile adhesion (dry concrete, 1 d / +10 °C) | > 4 N/mm² (100% concrete failure) |
| Pot life (200 g / +23 °C) | ~55 minutes |
| Max. layer thickness | 30 mm |
| Non-sag thickness (vertical) | Up to 15 mm |
| Consumption | ~1.9 kg/m² per mm thickness |
| Application temperature | +10 °C to +30 °C |
| Shrinkage | None |
| Shelf life | 24 months from production date |
Packaging
| Format | Size |
|---|---|
| Pre-batched unit | 6 kg (A+B) |
| Pallet | 480 kg (80 × 6 kg) |
Approvals
- EN 1504-4 structural bonding (CE marked)
- ASTM D4541 pull-off test
