Product Data Sheet Show all documents

SikaWrap®-450 C

Stitched carbon fiber fabric for structural strengthening

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
Product Data Sheet Show all documents

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

Sustainability / Certifications / Approvals

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

 

Product Information

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 information

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.
Technical Information

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

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.
Application steps

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

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