Product Data Sheet Show all documents

Sika® CarboShear L

CARBON FIBRE SHEAR LINKS FOR STRUCTURAL STRENGTHENING AS

PART OF THE SIKA® CARBODUR® CFRP STRENGTHENING SYSTEM

Sika® CarboShear L carbon fibre shear links are corrosion resistant, designed for strengthening concrete structures in shear and to anchor Sika® CarboDur® plates at their ends. They are part of the Sika® CarboDur® CFRP Strengthening System.Sika® CarboShear L shear links are bonded as external reinforcement using Sikadur®-30 epoxy resin based adhesive for normal, or Sikadur®-30 LP epoxy resin based adhesive for elevated temperatures during application. For fixing into the anchorage holes, Sika AnchorFix®-3+ can also be used.Please refer to the relevant Product Data Sheet for more detailed information about each of these adhesives.

  • Tested anchorage system
  • Non-corroding
  • Very high strength and durability
  • Shear and bursting enhancement
  • Well defined anchoring
  • Lightweight
  • Low overall thickness, can be over coated
  • Easy transportation
  • Easy installation – no heavy handling and installation equipment
  • Outstanding fatigue resistance
  • Minimal preparation of the shear links is required
  • Minimal aesthetic impact
Product Data Sheet Show all documents

Usage

Sika® CarboShear L profiles are used to improve, increase or repair the performance and shear resistance of structures for: Increased Load Carrying Capacity:
  • Increasing the load capacity of beams
  • For the installation of heavier machinery
  • For changes in building use
Damage to structural elements due to:
  • Deterioration of the original construction materials
  • Steel reinforcement corrosion
  • Accidents (Vehicle impact, earthquakes, fire etc.)
Improvement of serviceability and durability:
  • Reduced deflection and crack width
  • Stress reduction in the steel reinforcement
  • Improved fatigue resistance
Change of the structural system:
  • Removal of walls and / or columns
  • Removal of floor and wall sections to create access / openings
  • Changed design philosophy
To repair design or construction defects such as:
  • Insufficient / inadequate reinforcement
  • Insufficient / inadequate structural depth

Advantages

  • Tested anchorage system
  • Non-corroding
  • Very high strength and durability
  • Shear and bursting enhancement
  • Well defined anchoring
  • Lightweight
  • Low overall thickness, can be over coated
  • Easy transportation
  • Easy installation – no heavy handling and installation equipment
  • Outstanding fatigue resistance
  • Minimal preparation of the shear links is required
  • Minimal aesthetic impact

Packaging

Packs of 20 links, or individual pieces

Colour

Carbon fibre reinforced polymer with an epoxy matrix, black.

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Poland: Technical Approval ITB AT-15-5604/2011: Zestaw wyrobów Sika CarboDur do wzmacniania i napraw konstrukcji betonowych
  • 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
  • EMPA Test Report 169’219 E/1: Testing of CFRP shear strips on reinforced concrete T-beams T1 and T2, Swiss Federal Laboratories for Materials Testing and Research EMPA, 1998
  • EMPA Test Report 169’219 E/2: Testing of CFRP shear strips. Flexural beam T3, Swiss Federal Laboratories for Materials Testing and Research EMPA, 1998
  • EMPA Test Report 116/7: Shear strengthening with prefabricated CFRP L-shaped plates, Test beams S1 to S6, Swiss Federal Laboratories for Materials Testing and Research EMPA, 2002
Product Information

Shelf Life

Unlimited, provided the storage conditions are met.

Storage Conditions

Store in original, unopened, sealed and undamaged packaging in dry conditions at temperatures of max. +50 °C. Protect from direct sunlight.

Transportation: only in the original packaging, or otherwise adequately protected against any mechanical damage

Density

1.55 g/cm3

Dimensions

Sika® CarboShear L is a CFRP L-shaped plate with a 90° bend.

Type

Leg length short

Leg length long

Width

Nominal thickness

4/20/50

200 mm

500 mm

40 mm

2 mm

4/30/70

300 mm

700 mm

40 mm

2 mm

4/50/100

500 mm

1,000 mm

40 mm

2 mm

4/80/150800 mm1,500 mm40 mm2 mm

The leg length can be cut to size (by saw, or preferably by diamond cutting disk). The inner radius of the bend zone is 25 mm for all sizes

Fibre Volume Content

> 56 %
Technical Information

Laminate Tensile Strength

Mean value

> 1 350 N/mm2

*Values in the longitudinal direction of the fibres, considering a nominal thickness of 2 mm

Laminate Modulus of Elasticity in Tension

Mean value

95 000 N/mm2

Values in the longitudinal direction of the fibres, considering a nominal thickness of 2 mm

Laminate Elongation at Break in Tension

Mean value

> 1.30 %

Values in the longitudinal direction of the fibres, considering a nominal thickness of 2 mm

Application

Application steps

SUBSTRATE QUALITY

Recommended minimum concrete pull-off strength after surface preparation

  • Mean: 2.0 N/mm2
  • Minimum: 1.5 N/mm2

The effective concrete pull-off strength after surface preparation has to be checked and confirmed. When the concrete pull-off strength is below the stated minimum requirements, alternative Sika strengthening solutions are available: Please refer to the Product Data Sheet for SikaWrap® fabrics. Concrete must generally be older than 28 days (dependent on curing conditions and the type of concrete etc.).

SUBSTRATE PREPARATION

Please refer to the “Method Statement Sika® CarboShear Externally Bonded Shear Reinforcement” Ref: 850 41 06.

 

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