Product Overview

Sika CarboDur S is a high-strength, pultruded carbon fibre reinforced polymer plate used in the Sika CarboDur externally bonded reinforcement system for structural strengthening of existing reinforced concrete structures. The plate consists of unidirectional carbon fibre rovings embedded in an epoxy resin matrix, manufactured by the pultrusion process which aligns all fibres in the longitudinal direction and produces a plate of precise dimensions and consistent mechanical properties. The tensile strength of Sika CarboDur S CFRP material is approximately 2800 MPa — roughly eight times the yield strength of mild steel reinforcement — combined with an elastic modulus of approximately 160 to 210 GPa (similar to or higher than structural steel). This extraordinary strength and stiffness at very low self-weight (density approximately 1.6 kg per litre, compared to 7.85 for steel) makes Sika CarboDur S an ideal material for flexural strengthening of concrete beams, slabs, bridge decks, and structural walls where significant additional load capacity is required without adding significant dead load to the structure. In application, Sika CarboDur S plates are bonded to the tension face of the reinforced concrete element (typically the soffit of a beam or slab) using Sikadur 30 structural epoxy adhesive. The epoxy adhesive transfers tensile stress from the concrete into the CFRP plate through bond, allowing the plate to act compositely with the concrete beam and increase the overall flexural and shear capacity. Space Arc Engineering supplies Sika CarboDur S and Sikadur 30 for structural strengthening projects on bridges, buildings, parking structures, and industrial buildings throughout Delhi NCR, Ghaziabad, and Uttar Pradesh.

Applications

• Flexural strengthening of RC beams and slabs — increasing span capacity for higher live loads
• Bridge deck and bridge beam strengthening — increasing live load rating for heavier vehicle loads
• RC flat slab and transfer plate strengthening — column-supported slab capacity enhancement
• Parking structure beam and deck strengthening — increased vehicle load capacity
• Industrial building frame and mezzanine floor beam strengthening — added storage or equipment loads
• Strengthening of RC elements damaged by overload, construction error, or change of use

Key Advantages

• Extraordinary tensile strength of 2800 MPa — multiple times the capacity of equivalent steel plate
• Ultra-low self-weight (1.6 kg per litre) — negligible dead load addition to the strengthened structure
• Corrosion-free — CFRP does not corrode or require maintenance over the service life
• Thin plate profile — 1.2 to 1.4 mm thickness — minimal headroom loss in occupied buildings
• Fast installation with Sikadur 30 adhesive — no hot works, no welding, no heavy lifting equipment
• Proven system with decades of global structural strengthening experience — design guides available