Sika Sikadur 732
Sika Sikadur 732
Sikadur 732 is a solvent-free, thixotropic, 2-component structural epoxy resin bonding agent. It provides a perfect bond for new concrete to old concrete and is also suitable for grouting bolts, dowels and pins, and as a structural adhesive for concrete, masonry, metal and wood. For use by experienced professionals only.
Key Features
- High strength bonding / adhesive
- Excellent adhesion to most structural materials
- High early and final strength
- Highly effective on dry surfaces
- Solvent-free, thixotropic formula
- Listed on Eco-Product Directory (Application No: PL-01388-2022)
Applications
- Bonding fresh, plastic concrete to hardened concrete and steel
- Grouting bolts, dowels and pins
- Structural adhesive for concrete, masonry, metal, wood, etc.
Note: This product may only be used by experienced professionals.
Why Choose Sikadur 732?
- Perfect new-to-old concrete bond: Specifically designed for bonding fresh concrete to hardened concrete surfaces
- High mechanical strength: 28-day compressive strength ~63 N/mm², tensile flexural strength ~39 N/mm²
- Excellent adhesion: Tensile adhesion ~2 N/mm² on concrete (concrete failure mode), ~12 N/mm² on blast-cleaned steel
- Solvent-free and thixotropic: Suitable for vertical and overhead application without sagging
- Green building certified: Listed on the Eco-Product Directory for environmentally friendly building initiatives
Packaging
| Product | Size |
|---|---|
| Sikadur 732 set | 5 kg/set |
Technical Data
| Property | Value | Standard |
|---|---|---|
| Chemical Base | Epoxy | — |
| Colour | Concrete grey | — |
| Density | ~1.45 kg/L | — |
| Compressive Strength (7 days) | ~60.0 N/mm² | ASTM D-695 |
| Compressive Strength (28 days) | ~63.0 N/mm² | ASTM D-695 |
| Tensile Strength in Flexure (28 days) | ~39 N/mm² | ASTM D-790 |
| Tensile Adhesion — Concrete (28 days) | ~2 N/mm² (concrete failure, mechanically prepared K400) | — |
| Tensile Adhesion — Steel (28 days) | ~12 N/mm² (blast cleaned to SA 2½) | — |
| Thermal Expansion Coefficient (-20°C to +40°C) | 50 × 10⁻⁶ /°C | — |
| Mixing Ratio (A:B by weight/volume) | 2 : 1 | — |
| Consumption | 0.3 – 0.8 kg/m² (depending on substrate condition) | — |
| Pot Life (at +30°C) | 35 minutes | — |
| Shelf Life | 24 months from date of production | — |
Application Method
Substrate Preparation
- Surface must be clean and sound, free of standing water
- Remove dust, laitance, grease, curing compounds, waxes, foreign particles and disintegrated materials
- Concrete: Sandblast or use other approved mechanical methods
- Steel: Blast clean or use equivalent mechanical methods to remove oil, grease, dirt, rust scale and foreign matter
Mixing
Pre-mix each component. Proportion 2 parts Component A to 1 part Component B into a clean pail. Mix thoroughly for 3 minutes with a paddle on low speed (400–600 rpm) drill until uniform in colour. Mix only the quantity that can be used within its pot life.
Application
Apply Sikadur 732 to hardened concrete by brush, roller or broom. Place fresh concrete while the bonding agent is still tacky.
Important Notes
- For use by experienced professionals only
- Surface may be dry or damp but must be free of standing water
- Store in original, unopened, sealed packaging at +15°C to +30°C in dry conditions, protected from direct sunlight
- All technical data are based on laboratory tests; actual results may vary due to site conditions
FAQ
What is Sikadur 732 primarily used for?
It is primarily used to bond fresh or plastic concrete to hardened concrete and steel surfaces. It is also suitable for grouting bolts, dowels and pins, and as a structural adhesive for concrete, masonry, metal and wood.
How long is the pot life after mixing?
Approximately 35 minutes at +30°C. Mix with a low-speed mechanical mixer (400–600 rpm) for about 3 minutes until uniform in colour. Only mix the quantity that can be used within the pot life.
Can it be applied to damp surfaces?
The surface may be dry or damp but must be free of standing water. Remove all dust, grease, curing compounds and loose materials before application. Best results are achieved on dry surfaces.
What is the consumption rate?
Typical consumption is 0.3 to 0.8 kg/m², depending on substrate condition.
