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Weber - Saint-Gobain

Strengthening walls

Sheet wrapping is also a novel technique for strengthening walls, in particular in areas subject to seismic occurrences. Weber have been involved in extensive laboratory testing of combinations of sheeting and cross-membering using carbon fibre strips. A variety of fibre types are available depending on the expected loading dynamics.

Problem

Reinforced concrete and masonry walls need to be strengthened against undue wind loads, deflactions, additional loads, shear cracks and extraordinary loads due to explosion or impact.

1. Deflections

Additional loads due to physical loading, wind or impact can result in flexural failure of walls. This is a result of insufficient lateral reinforcement in the wall or exceptional loads placed on the wall.

2. Damages

Wall structures are susceptible to sudden impact damage, causing localised failure in shear. Damage can arise from vehicle strikes, blast damage, impact from flying debris or accidental damage from other structural members.

3. Damages

Reinforced concrete walls are susceptible to damage caused by:

  • settlement of foundations
  • flexural bending cracks 
  • shear cracks
  • thermal movement cracks
  • overloading
  • impact damage

Solution

Use externally-bonded reinforcement – sheet wrap

Install sheet wrap to the surface of the wall as containment reinforcement, flexural strengthening, impact strengthening and shear strengthening. The thickness of FRP wrap can be determined by design and the number of FRP sheet layers applied.

Masonry walls Sheet wrap – flexural strengthening

weber.tec force glass sheet

weber.tec force aramid sheet

Install layers of glass or aramid sheet to strengthen the wall in accordance with the design engineer’s specification.

 

Concrete or masonry walls Sheet wrap – impact strengthening

weber.tec force aramid sheet

Install multiple layers of aramid sheet to strengthen the wall against impact damage or blast damage from explosions. Aramid is excellent for impact strengthening to walls.

 

Concrete walls Sheet wrap – shear strengthening

weber.tec force carbon sheet C640

Install multiple layers of C640 carbon sheet ultra-high modulus to strengthen against shear cracking to concrete walls.

Solution with the following Weber products

Solution 1

weber.tec force glass sheet

Alkali-resistant glass fibre sheet for impact resistance and containment reinforcement

weber.tec force aramid sheet

High-strength aramid reinforcement sheet for structural strengthening

weber.tec force carbon sheet

High-performance reinforcement carbon fibre sheet for structural strengthening

Printable version

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