Description
S4Repair SM 13 is a high-performance, cement-based repair mortar that is polymer and fiber-enhanced for structural repair applications. It is specifically designed for bonding and repairing concrete, stone, and masonry elements. This non-shrinkage, thixotropic mortar provides excellent bonding strength, high compressive strength, and superior resistance to impacts and vibrations. It is also resistant to sulphate, water, and frost, making it ideal for use in harsh environmental conditions.
✅ Advantages:
- Easy to apply
- Thixotropic structure, ideal for vertical and horizontal applications
- Does not shrink
- Provides high bonding shortly after application
- High compressive strength and resistance to impacts and vibrations
- Resistant to sulphate, water, and frost
- Does not contain corrosive materials
📌 Application Areas:
- Indoors and outdoors
- Horizontal and vertical applications
- Repair and leveling of concrete and reinforced concrete structural elements
- In subsoil, above ground, and underwater environments requiring sulphate resistance
- Filling gaps between old and new concrete
- Filling rod holes and core cavities
- Chamfer applications before waterproofing
⚙️ Technical Specifications:
| Property | Value |
|---|---|
| Chemical Structure | Cement-based, polymer and fiber-added powder |
| Density | ~2.05 g/cm³ (±0.1) |
| Mixture Ratio | 3.75–4.25 L water / 25 kg powder |
| Pot Life | ~25-30 minutes |
| Application Thickness | 5–40 mm (for local repairs) |
| Bond Strength to Substrate (EN 1542) | ≥ 2 N/mm² |
| Compressive Strength (EN 12190) | Day 1: ≥ 20 N/mm², Day 7: ≥ 45 N/mm², Day 28: ≥ 60 N/mm² |
| Bending Strength (EN 12190) | ≥ 8 N/mm² |
| Soluble Chlorine Content | ≤ 0.05% |
| Consumption | 1.90–2.10 kg/m² (for 1 mm thickness) |
| Reaction to Fire | A1 |
🛠️ Application Instructions:
- Ensure the surface is clean, smooth, and solid
- Mix the product with clean water until a homogeneous mixture is achieved
- Apply with a trowel to the affected area
- For thicker applications, multiple layers can be applied, with each layer allowing sufficient drying time before applying the next
⚠️ Warnings:
- Do not apply in weather conditions below +5°C or above +30°C
- Avoid application in areas at risk of freezing within 24 hours
- Do not apply on wet or frozen surfaces, or surfaces at risk of frost
🧽 Cleaning & Storage:
- Clean tools with soapy water immediately after use
- Store in a dry, moisture-free area, unopened, for up to 12 months
🧯 Safety:
- Wear protective clothing, gloves, and masks during application
- Avoid contact with eyes and skin
- Keep out of reach of children
- Consult the Safety Data Sheet (SDS) for more details





