Strips - Sika® CarboDur® S

Carbon fiber laminate for structural strengthening

Sika® CarboDur® S is a pultruded carbon fiber reinforced polymer (CFRP) laminate designed for strengthening concrete, timber and masonry structures. Sika® CarboDur® S is bonded onto the structure as external reinforcement using Sikadur 30 epoxy resin as the adhesive.

• Very high strength
• Lightweight
• Non-corrosive
• Unlimited lengths
• Minimal preparation of laminates
• Very easy to install, especially overhead
• High modulus of elasticity
• Outstanding fatigue resistance
• Alkali resistant
• Simple laminate intersections or crossings

Usage

Load increases

• Increased live loads in warehouses
• Increased traffic volumes on bridges
• Installation of heavy machinery in industrial buildings
• Vibrating structures
• Changes of building utilization

Damage to structural parts

• Aging of construction materials
• Steel reinforcement corrosion
• Vehicle impact
• Fire

Serviceability improvements

• Decrease in deformation
• Stress reduction in steel reinforcement
• Crack width reduction

Change in structural system

• Removal of walls or columns
• Removal of slab sections for openings

Design or construction defects

• Insufficient reinforcements
• Insufficient structural depth

Advantages

• Very high strength
• Lightweight
• Non-corrosive
• Unlimited lengths
• Minimal preparation of laminates
• Very easy to install, especially overhead
• High modulus of elasticity
• Outstanding fatigue resistance
• Alkali resistant
• Simple laminate intersections or crossings

Packaging

Available in any length up to 250 m (820 ft.). Type S 512 width 50 mm (approx. 2”). Type S 812 width 80 mm (approx. 3”). Type S 1012 width 100 mm (approx. 4”).

Color

Black

Product Details

Product Information

Shelf Life

Unlimited

Storage Conditions

No exposure to direct sunlight.

Density

0.058 lb./in³ (1.60 g/cm³)

Fiber Volume Content

> 68 %

Technical Information

Tensile % Elongation

Elongation at Break: 1.69 %

Thermal Resistance

> 300 °F (> 150 °C)

Application

Consumption

Coverage

Coverage of Sikadur® 30 epoxy resin with CarboDur: Type S 512:

approx. 50 LF/gallon. Type S 812: approx. 32 LF/gallon. Type S 1012: approx. 22 LF/gallon.

Application Steps

SUBSTRATE PREPARATION

Surface must be clean and sound. It may be dry or damp, but free of standing water and frost. Remove dust, laitance, grease, curing compounds, impregnations, waxes, foreign particles, disintegrated materials and other bond inhibiting materials from the surface. Existing uneven surfaces must be filled with an appropriate repair mortar (e.g. mixed Sikadur 30 epoxy with the addition of 1 part oven-dried sand). The adhesive strength of the concrete must be verified after surface preparation by random pull-off testing (ACI 503R) at the discretion of the engineer. Minimum tensile strength, 200 psi (1.4 MPa) with concrete substrate failure.

Surface Levelness/Irregularities: Maximum allowable deviation in 6 ft. shall be limited to 1/4” (6 mm) but no greater than 1/8” (3 mm) per foot. Any sharp edges (i.e. fins, form-marks, etc.) must be ground smooth and flush.

Preparation Work: Concrete - Blast clean, shotblast or use other approved mechanical means to provide an open roughened texture.

CarboDur - Wipe clean with appropriate cleaner (e.g. MEK).

Cutting the CarboDur Laminate:
Preferred: CarboDur laminates should be cut with tools using a “shearing” force (e.g. guillotine or heavy duty shears). Care must be taken to support both sides of the CarboDur laminate to avoid splintering.
Alternate: A hack saw or other abrasive cutting method may be used. However, extra care must
be taken to support the CarboDur laminate on both sides to avoid splintering. In addition, extra care
must be taken to avoid exposure to carbon dust.

Mixing

Consult Sikadur 30 technical data sheet for information on epoxy resin.

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