Under-strength beams

The webertec force composite strengthening system can reinstate the structural integrity of reinforced concrete beams.

Reinforced concrete beams carry loads from buildings and structures to be transferred to walls and columns. Additional loads due to change of use, extra loads, under-designed beams or damage to the structural beam can cause cracking and excessive deflection. Overloaded beams need to be strengthened to prevent partial collapse or failure.

Common issues and queries you can face

Shear cracking in reinforced concrete beams

Shear cracking

Additional loads can result in shear cracks forming at restraints around columns and at the end of reinforced concrete beams. These cracks are structural and indicate insufficient shear reinforcement.

Flexural cracking in reinforced concrete beams

Flexural cracking

Additional loads to a structure can cause flexural cracking to appear as the structure deflects under loading. This leads to flexural cracks opening up in the tension face of reinforced concrete beams and floor slabs. Insufficient steel reinforcement is an issue. These cracks can also allow contaminants to enter the concrete cover zone and initiate reinforcement corrosion.

Use external plate bonding and sheet wrap

Install externally-bonded reinforcement using plate bonding and sheet wrap techniques to strengthen the reinforced concrete beam and provide additional reinforcement stiffness.

  1. Shear strengthening carbon fibre sheet wrap

    webertec force carbon sheet C640 grade modulus.

    Use ultra-high modulus carbon fibre UD sheet wrap to increase shear capacity of beam.

  2. Flexural strengthening carbon fibre plate bonding

    webertec force carbon plate
    150 grade low modulus
    200 grade high modulus

    Use either low modulus or high modulus carbon fibre plates glued externally to strengthen the tension zone of the beam and increase flexural strength.

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