SikaWrap®-450 C
SikaWrap®-450 C is a unidirectional woven carbon fiber fabric, designed for installation using the dry or wet application process.
- Manufactured with weft fibers to keep the fabric stable (heat-set)
- Multifunctional fabric for use in many different strengthening applications
- Flexible and accommodating of different surface planes and geometry (Beams, columns, chimneys, piles, walls, soffits, silos etc.)
- Low density for minimal additional weight
- Extremely cost effective in comparison to traditional strengthening techniques
Usage
Strengthening of reinforced concrete, masonry, brickwork and timber elements or structures, to increase flexural and shear loading capacity for :- Improved seismic performance of masonry walls
- Replacing missing steel reinforcement
- Increasing the strength and ductility of columns
- Increasing the loading capacity of structural elements
- Enabling Changes in use/alterations and refurbishment
- Correcting structural design and / or construction defects
- Increasing resistance to seismic movement
- Improving service life and durability
Advantages
- Manufactured with weft fibers to keep the fabric stable (heat-set)
- Multifunctional fabric for use in many different strengthening applications
- Flexible and accommodating of different surface planes and geometry (Beams, columns, chimneys, piles, walls, soffits, silos etc.)
- Low density for minimal additional weight
- Extremely cost effective in comparison to traditional strengthening techniques
Packaging
| Fabric Length / Roll | Fabric Width | |
| 1 Roll in Cardboard Box | ≥ 50 m | 500 mm |
Product Details
APPROVALS / STANDARDS
France: CSTB - Avis Technique 3/10-669, SIKA CARBODUR SIKA WRAP
Slovakia: TSUS, Building Testing and research institutes,
Technical Approval TO-09/0080, 2009: Systémy dodatočného zosilňovania konštrukcií Sika® CarboDur® a SikaWrap® (Slovak).
Poland: Technical Approval ITB AT-15-5604/2011: Zestaw wyrobów Sika CarboDur do wzmacniania i napraw konstrukcji betonowych (Polish)
Poland: Technical Approval IBDiM Nr AT/2008-03-0336/1 „Płaskowniki. pręty, kształtki i maty kompozytowe do wzmacniania betonu o nazwie handlowej: Zestaw materiałów Sika CarboDur® do wzmacniania konstrukcji obiektów mostowych (Polish)
USA: ACI 440.2R-08, Guide for the Design and construction of Externally Bonded FRP Systems for strengthening concrete structures, July 2008
UK: Concrete Society Technical Report No. 55, Design guidance for strengthening concrete structures using fiber composite material, 2000
Italy: CNR-DT 200/2004 - Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Existing Structure
Construction
Fiber orientation: 0° (unidirectional).
Warp: black carbon fibers (99% of total areal weight).
Weft: white thermoplastic heat-set fibers (1% of total areal weight).
Fibre Type
Mid strength carbon fibers
Shelf Life
24 months from date of production if stored as per recommendation.
Storage Conditions
Store properly in undamaged original sealed packaging in dry conditions at temperatures between +5°C and +35°C.
Protect from direct sunlight.
Dry Fibre Density
1.82 g/cm³
Dry Fibre Thickness
0.255 mm (based on Fiber content)
Dry Fibre Tensile Strength
| 4000 N/mm2 (Nominal, Longitudanal direction of Fiber) | ISO 10618 |
Dry Fibre Modulus of Elasticity in Tension
| 2,30,000 N/mm2 (Longitudanal direction of fiber) | ISO 10618 |
Dry Fibre Elongation at Break
| 1.7% ( Longitudanal direction of Fiber) | ISO 10618 |
System Structure
The system build-up and configuration as described must be fully complied with and may not be changed.
Concrete substrate adhesive primer - Sikadur®-330.
Impregnating / laminating resin - Sikadur®-330.
Structural strengthening fabric - SikaWrap®-450 C.
For detailed information on Sikadur®-330, together with the resin and fabric application details, please refer to the Sikadur®-330 Product Data Sheet and the Method Statement of SikaWrap® manual dry application.
Laminate Nominal Thickness
| 0.255 mm ( Values in the longitudinal direction of the fibres Single layer, minimum 27 samples per test series) | EN 2561 |
Laminate Nominal Cross Section
| 255 N/mm² ( as per 1000mm width) | EN 2561 |
Laminate Tensile Strength
| Average | 3500 N/mm² |
| Characteristics | 3200 N/mm² |
Laminate Modulus of Elasticity in Tension
| Average | 225 kN/mm² |
| Characteristic | 220 kN/mm² |
Tensile Resistance
| Average | 452 kN/m |
| Characteristic | 413 kN/m |
Actual design strain has to be determined according to relevant design standard. Values given relate to impregnating resin Sikadur®-330 IN.
Application
Consumption
Dry application with Sikadur®-330 IN
| 0.8-1.2 kg/m2 | First Layer including priming layer |
| 0.7 kg/m2 | Following layers |
Please also refer to Method Statement of SikaWrap® manual dry application.
SUBSTRATE QUALITY
Minimal substrate tensile strength: 1.0 N/mm2 or as specified in the strengthening design.
Please also refer to Method Statement of of SikaWrap® manual dry application.
SUBSTRATE PREPARATION
Concrete and masonry:
Substrates must be sound, dry, clean and free from laitance, ice, standing water, grease, oils, old surface treatments or coatings and any loosely adhering particles.
Concrete must be cleaned and prepared to achieve a laitance and contaminant free, open textured surface.
Repairs and levelling: If carbonised or weak concrete cover has to be removed or levelling of uneven surfaces is needed, the following systems can be applied:
(Details on application and limitation see the relevant Product Data Sheets)
- Protection of corroded rebars: SikaTop® Armatec® 110 EpoCem®
- Structural repair materials: Sikadur®-41 / Sikadur®-31 epoxy repair mortar
- Sikadur®-32 LP adhesive.
- Please also refer to Method Statement of of SikaWrap® manual dry application