Sika SikaWrap 230 C
Sika SikaWrap 230 C
SikaWrap®-230 C is a unidirectional woven carbon fibre fabric made of mid-range strength carbon fibres with an area density of 235 g/m², designed for dry or wet application. Used as a reinforcement fabric for externally bonded structural strengthening systems on concrete, masonry, and wooden substrates. Must be used with Sikadur®-330 primer and Sikadur®-300 or Sikadur®-330 impregnating resin. Available in 300 mm and 600 mm wide rolls (50 m each). Supplied by Wahhing Waterproofing Materials.
SikaWrap®-230 C — Carbon Fibre Structural Strengthening Fabric
SikaWrap®-230 C is a unidirectional woven carbon fibre fabric made of selected mid-range strength carbon fibres with a fibre area density of 235 g/m². Manufactured with thermo-welded weft fibres to keep the fabric stable, it is designed for installation using the dry or wet application process. Used as a reinforcement fabric for externally bonded structural strengthening systems on concrete, masonry, and wooden substrates. Application must be carried out by trained and experienced professionals, and structural strengthening design must be prepared by a specialist structural engineer.
Key Features
- Improves the service life of a structure
- Manufactured with thermo-welded weft fibres for fabric stability
- Multifunctional fabric for many different strengthening applications
- Flexible and accommodating to different surface planes and geometry (beams, columns, chimneys, piles, walls, soffits, silos)
- Available in different widths (300 mm and 600 mm) for optimum utilisation
- Low density for minimal additional weight
- Contributes to LEED® v4 MR Credit
Applications
- Increasing flexural and shear loading capacity of elements and structures
- Enhancing load-carrying capacity or ductility of structural members in compression
- Replacing missing steel reinforcement
- Structural upgrading of weak concrete elements or structures
- Improving impact resistance
- Passive strengthening for seismic event protection
Note: A specialist structural engineer must be consulted for any structural strengthening design calculation.
Why Choose SikaWrap 230 C?
- Global Leader: Sika is a world leader in structural strengthening, with products certified across multiple countries
- High Strength, Low Weight: Carbon fibre tensile strength of 4000 N/mm² with density of only 1.82 g/cm³, adding minimal load to the structure
- Complete System: Used with certified Sikadur® primers and impregnating resins for a fully approved strengthening system
- Flexible Application: Supports both dry and wet application methods to suit different site conditions
- Wide Applicability: Suitable for concrete, masonry, and wooden substrates — beams, columns, walls, slabs, and more
- International Approvals: Technical approvals from CSTB, ITB, CTPC, DIT, and other authorities
Packaging
| Roll Width | Roll Length |
|---|---|
| 300 mm | 50 m |
| 600 mm | 50 m |
Refer to current price list for available packaging variations.
Technical Specifications — Dry Fibre
| Property | Value | Standard |
|---|---|---|
| Fibre Type | Selected mid-range strength carbon fibres | — |
| Fibre Orientation | 0° (longitudinal, unidirectional) | — |
| Warp (longitudinal) | Black carbon fibre, 99% | — |
| Weft (transversal) | White thermoplastic heat-set fibre, 1% | — |
| Dry Fibre Thickness | 0.129 mm | — |
| Density (area) | (235 ± 10) g/m² | — |
| Dry Fibre Density | 1.82 g/cm³ | — |
| Modulus of Elasticity in Tension | 230 kN/mm² | ISO 10618 |
| Tensile Strength | 4000 N/mm² | ISO 10618 |
| Elongation at Break | 1.7% | ISO 10618 |
| Shelf Life | 24 months | — |
Technical Specifications — Laminate
| Property | Mean | 5% Characteristic | Standard |
|---|---|---|---|
| Nominal Thickness | 0.129 mm | — | |
| Nominal Cross Section | 129 mm² per metre width | — | |
| Tensile Strength | 3500 N/mm² | 3200 N/mm² | EN 2561 |
| Modulus of Elasticity | 225 kN/mm² | 220 kN/mm² | EN 2561 |
| Elongation at Break | 1.56% | 1.35% | EN 2561 |
System Components
| Function | Product |
|---|---|
| Concrete Substrate Adhesive Primer | Sikadur®-330 |
| Impregnating or Laminating Resin | Sikadur®-330 or Sikadur®-300 |
| Structural Strengthening Fabric | SikaWrap®-230 C |
Do not interchange different system components. The system build-up must be fully complied with.
Consumption
Dry Application (with Sikadur®-330)
| Layer | Consumption |
|---|---|
| First layer (including primer) | 0.7–1.2 kg/m² |
| Following layers | 0.5 kg/m² |
Wet Application (Primer Sikadur®-330, Impregnating Sikadur®-300)
| Layer | Consumption |
|---|---|
| Primer | 0.4–0.6 kg/m² |
| Fabric layers | 0.6 kg/m² |
Important Notes
- Application must only be carried out by an applicator trained or approved by Sika with experience in this type of application
- Strictly follow installation procedures as defined in Method Statements, application manuals, and working instructions
- Do not interchange different system components — SikaWrap® fabrics must be used with specified Sikadur® adhesives and resins
- Substrate tensile adhesion strength must be a minimum of 1.0 N/mm² (or as specified in strengthening design); verify with pull-off test if necessary
- Clean and prepare concrete to achieve a laitance-free, contaminant-free, open-textured surface
- All structural strengthening design calculations must be prepared and signed by a specialist structural engineer
- Store in original, unopened, undamaged sealed packaging at +5°C to +35°C in dry conditions, protected from direct sunlight
FAQ
What is SikaWrap 230 C?
SikaWrap 230 C is a unidirectional woven carbon fibre fabric used for structural strengthening. It is bonded to the surface of concrete, masonry, or wooden structures using epoxy resin to significantly increase flexural and shear capacity. With a dry fibre tensile strength of 4000 N/mm² and density of only 1.82 g/cm³, it provides exceptional strengthening with virtually no additional weight.
What resin system is needed with SikaWrap 230 C?
SikaWrap 230 C must be used with Sika's specified system components. Use Sikadur®-330 as the concrete substrate primer, and either Sikadur®-330 (dry application) or Sikadur®-300 (wet application) as the impregnating/laminating resin. System components must not be interchanged to ensure maximum bond and durability.
Can I install SikaWrap 230 C myself?
No. SikaWrap 230 C must only be installed by applicators who are trained or approved by Sika and experienced in carbon fibre strengthening applications. All structural strengthening designs must be calculated and signed by a specialist structural engineer.
What packaging sizes are available?
SikaWrap 230 C is available in 300 mm wide and 600 mm wide rolls, each 50 m long. Contact us via WhatsApp for pricing, Mong Kok store pickup, and Hong Kong delivery.
