Technical Data Sheet Edition 1, 2003 Identification no. 20.002 Version no. 0010 Sika CarboDur

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Sika CarboDur Heavy-Duty CFRP Strengthening System

Description Heavy-duty strengthening system for reinforced concrete and timber. System components: Sikadur-30 adhesive for bonding reinforcement and Sika CarboDur-laminates.

Uses To strengthen reinforced concrete and timber structure for : Loading increases

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

Damage to structural parts

Ageing of construction materials Steel reinforcement corrosion Vehicle impact Fire

Serviceability improvements

Decrease in deformation Stree 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 Low in weight

Available in any length, no joints required. Low overall thickness Easy to transport (rolls) No preparation of the Sika CarboDur-laminates Laminate intersections are simple Economical application-no heavy handling and installation equipment. Very high strength Available in various modul of elasticity Outstanding fatigue resistance Can be coated without preparation Akali-resistant

Back

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Availability Sika CarboDur S E-Module > 165.000 N/mm2 Type Width mm Thickness mm Cross sectional

area mm2 Sika CarboDur S512 50 1.2 60

Sika CarboDur M E-Module > 210.000 N/mm2

Type Width mm Thickness mm Cross sectional area mm2

Sika CarboDur M514 50 1.4 70

Notes on Design General remarks A Sika CarboDur-laminate has no plastic deformation reserve. Therefore the maximum bending resistance of a strengthened section is reached when laminated failure occurs during steel yield and before concrete failure. The mode of failure is influenced by the laminate cross-section. To limit crack widths and deformation the yield point should not be reached in the reinforcing bars under service conditions. Any shear cracks which occur must be prevented from causing displacement on thestrengthened surface and shearing of the laminate. Stress and deformation calculations can be made by the normal methods. They should be verified in accordance with standards SIA 160 (1989) and 162 (1989). Procedure for assessing the condition of the structure Dimension (geometry, reinforcement, evenness of surface to be strengthened), quality of existing construction materials, ambients climatic conditions, agreed conditions of service.

Verifications Bearing safety : Non strengthened structure (with allowance for a reduced total safety factor

= 1.0) Strengthened structure (with the mode of failure described above, check on the

strains) Shearing of laminate Anchorages

Fatigue resistance :

Check on concrete and steel stresses Serviceability :

Deformation (with average strains, assuming elastic behaviour of the structure and timebased strain changes in the concrete)

Steel stressed (no plastic deformation in service conditions). Crack widths (by limiting the steel stresses in service conditions)

Instruction For User Important Notes

Mix Sikadur-30 at low speed (max. 500 rpm) so that as little air as possible is

being entrained. Work the adhesive well into the concrete surface. Minimum adhesive strength of the prepared concrete substrate is 1.5 N/mm2. The Sika CarboDur system must be protected from direct sunlight. Maximum admissible service temperature is +50oC. The instructions in the Technical Data Sheet must be followed when applying

Sikadur - 30 adhesive.

Substrate Condition Concrete : Clean, free from grease and oil, dry, no loose particle or laitance. Concrete age, depending on climate, 3 to 6 weeks minimum. Preparation: Blast-clean, scabble or grind. Timber : Clean, free from grease and oil, no loose particles. Preparation: Blast-clean or grind. The surface to be coated must be level, with steps and form work marks not greaterthan 0.5 mm. After cleaning, remove all dust from the surface with an industrial vacuum cleaner. Planeness of substrate to be checked with a metal batten. Tolerance for 2 m length max. 10 mm, or 2.5 mm for 50 cm length respectively.

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Mixing Predosed Pack : Stir the material well in the original containers. Add component B to component A. Mix with an electric low speed hand mixer (max. 500 rpm) for about 3 minutes to uniform appearance. Entrain as little air as possible. The pot life begins when the resin and hardener are mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the pot life. To obtain longer workability at high temperatures, the mixed adhesive may be divided into portions. Another method is to chill components A and B before mixing them.

Application If there are large blowholes on the concrete surface, these must first be filled with Sikadur 741 repair mortar. The Sikadur-30 adhesive must be used as a bonding layer to ensure a good bond with the concrete substrate. Apply the well-mixed Sikadur-30 adhesive carefully to the properly prepared substrate with a spatula to form a first layer about 1 mm. Place the Sika CarboDur-laminate on a table and clean it with Colma Cleaner. Apply the Sikadur-30 adhesive with a roof shaped spatula onto the CarboDur-laminate to a thickness of 1 to 2 mm. Within the open time of the adhesive, depending on temperature, place the Sika CarboDur laminate onto the concrete surface. Using a roller, press the laminate into the epoxy material until the adhesive is forced out on both sides of the laminate. Remove surplus epoxy adhesive. Samples should be made up on site to check the adhesive used in respect of curing. When the Sikadur-30 adhesive has cured, the tear-off film on top of the laminate can be remove. As final check, test the Sika CarboDur-laminate for hollows by tapping lightly. The top of the laminate can be painted with a coating material such as Sikagard-62 or Sikagard-550 Elastic.

Cleaning Clean tools immediately with Colma Cleaner. Wash hand and skin thoroughly in warm soap water. Before curing Sikadur-30 components A+B are a water pollutant and should not be discharged into drains, waterways or soil. Colma Cleaner and Sikadur-30 residues must always be disposed of properly. Cured material can only be removed mechanically.

Technical Data Colour

Black

Base Carbonfibre reinforced with an epoxy matrix. Fibre Volumetric content*

>68%

Temp. Resistance > 150oC E-Modulus Sika CarboDur S Sika CarboDur M

> 165,000 N/mm2 > 210,000 N/mm2 Density 1.5 g/cm3 1.6 g/cm3 Tensile Strength* > 2,800 N/mm2 > 2,400 N/mm2 Mean Value of Tensile Strength At Break *

3,050 N/mm2 2,900 N/mm2

Elongation At Break* > 1.7 % > 1.2 % Shelf Life Unlimited (no exposure to direct sunshine) Packaging Supply in rolls of 250 m. * Mechanical values obtained from longitudinal direction of fibres. Disclaimer In Technical Data Sheets

The information, and, in particular the recommendations relating to the application and end-use of Sika products are given in good faith based on Sikascurrent knowledge and experience of the product when properly stored, handled and applied under normal conditions. In practice, the differences inmaterials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liabilityarising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sales and delivery. Users shouldalways refer to the most recent issue of the Technical Data Sheet for the product concerned, copies of which will be supplied on request.

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PT. Sika Indonesia Jl. Raya Cibinong- Bekasi km. 20 Limusnunggal - Cileungsi BOGOR 16820 - Indonesia Tel. +62 21 8230025 Fax. +62 21 8230026 www.sika.co. id e-mail: marketing@sika.co.id

Branches Surabaya, Tel : 031-8420377 Fax : 031-8495018 Medan, Tel : 061-4149224, 4552441 Fax : 061-4150805 Batam, Tel : 0778-424928 Fax : 0778-426913

Sub Distributor Bandung, Tel : 022-6018161, Fax : 022-6018272 Denpasar, Tel : 0361-235998,235973,237622, Fax:0361-237053Makassar, Tel : 0411- 859147, 858527, Fax : 0411-858527 Balikpapan, Tel : 0542-411258, Fax : 0542-412230 Pekanbaru, Tel : 0761-46993,47677, Fax : 0761-45112 Duri/Dumai. Tel : 0765-595259, Fax : 0765-91135 Palembang, Tel : 0711-351523, Fax : 0711-369858 Palu, Tel : 0451-454855, 422122, Fax : 0451-454855