Connolly® Key Joint


Connolly® Key Joint

Connolly® Key Joint supplied by InfraBuild Construction Solutions (formerly LIBERTY OneSteel Reinforcing) is a high-quality preformed galvanized key joint for the control of shrinkage cracking and differential movement in concrete slabs. Key Joints can also be curved to suit a custom radius using a back cutting technique.

Connolly® Galvanized Key Joint from InfraBuild Construction Solutions guarantees a definite break in the slab to relieve shrinkage-induced stresses. Joints are set up prior to pouring concrete, which means no interruptions to the finishing operations. Knockouts can accommodate a range of dowel sizes and shapes. Key joints are available in 100mm, 150mm, 200mm and 300mm heights and lengths of 6m.

Typical Uses

  • Contraction joints in slab-on-ground applications
  • Shear load transfer through contraction joints


  • Rigid connection between key joint and dowels through patented twist-fix feature
  • Patented Wedge fixing mechanism allows fast and accurate height adjustment
  • Additional stiffening ribs (KJ150, KJ200 & KJ300 only) to ensure straighter joints
  • Can be used to screed off which makes getting the right level quick and easy

To find out more about the Connolly® Galvanized Key Joint products stocked at your local InfraBuild Construction Solutions please contact your nearest branch.


Product Code Height (mm)Length (m)
KJ100 1006
KJ150 1506
KJ200 2006
KJ300 3006

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