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Insufficient Load Capacity

Strengthening concrete — Higher loads, structural strengthening (engineer advice needed). Show 11 products ↓

  1. Step 1 (completed)Strengthening concrete
  2. Step 2Where is it?
  3. ResultProducts & systems

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Structural Joints10 products

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Problem
Strengthening concrete
Location
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Products
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How it happens

What happens when a structure is overloaded

Open the diagram full sizeWhat happens when a structure is overloaded: The load is higher than the member was designed for. The beam bends, and cracks open across its underside at mid-span. Near the supports, diagonal shear cracks appear.
Problem Schematic, not to scale

What goes wrong

  1. A: The load is higher than the member was designed for.
  2. B: The beam bends, and cracks open across its underside at mid-span.
  3. C: Near the supports, diagonal shear cracks appear.

How it is fixed

A structural engineer must check the member and design any strengthening. Typical options are bonded fibre or steel plates, extra section with micro-concrete jacketing, and repair of cracks and damaged concrete first. See the strengthening guides below.

Products for this problem

Matching products (11)

Sikadur®-32 LP

Sikadur®-32 LP

Sika Confirm availability

Why: Sikadur®-32 LP may only be used by experienced professionals. As a structural bonding agent and adhesive for: Concrete elements (including bonding fresh to hardened concrete), Hard natural stone, Ceramics, fibre-cement. (TDS p.1)

  • Application temperature range +20 °C to +40 °C
  • Thickness up to 1 mm
  • Easy to mix and apply
Surfaces
concrete · masonry · plaster/render · mortar · steel/metal
System
Structural Bonding
⚠ 3 limitations to check
  • Sikadur® resins are formulated to have low creep under permanent loading.
  • Generally the long term structural design load must be lower than 20−25 % of the failure load.
  • A structural engineer must be consulted for design calculations for specific structural applications.
TDS p.3
Data sheet Request a quotation for Sikadur®-32 LP on WhatsApp

Product facts on these cards are taken from the manufacturer data sheets (page cited on each card) and are being reviewed by our technical team. Always check the data sheet before use.

Step-by-step

Follow a complete solution

Cracked concrete beam with a sealed crack and injection ports, connected by a hose to an injection gun. Structural cracks in beams, columns & slabs Cracks in load-bearing members can come from overload, settlement, corrosion or design faults, so an engineer must find the cause first. Dry or damp cracks are then bonded by epoxy injection; leaking cracks follow the leaking-cracks guide. 7 steps Concrete beam between two columns with a carbon-fibre strip bonded to its underside and fabric wraps near the supports. Structural strengthening (FRP wrapping) Adding capacity to beams, columns, slabs and walls with bonded carbon or glass fibre fabrics, for change of use, design or construction defects, corrosion loss or seismic upgrading. This is engineer-designed work installed only by trained specialists. 7 steps Existing column in formwork with new bars and links, micro-concrete poured into the jacket; plan view beside it. Column jacketing with micro-concrete Enlarging and strengthening columns, piers or beams by adding steel and a flowable, non-shrink micro-concrete cast in formwork. Used for under-strength or badly damaged columns, extra floors and change of use, always to an engineer's design. 7 steps
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Complete systems that solve it

11 matching products

Structural Strengthening

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Structural Bonding

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