Connolly® Key Joint


Connolly® Key Joint

Connolly® Key Joints supplied by InfraBuild Construction Solutions (formerly LIBERTY OneSteel Reinforcing), are a continuous pour solution for contraction joints in slab on ground applications. Connolly Key Joints are a roll formed galvanized steel section used as a leave-in-place formwork to control shrinkage induced cracking. The profile is fixed in place using the patented peg and wedge system.

The unique tongue profile provides positive load transfer with minimal stepping. For higher load applications the preformed knock-outs allow Key Joints to be used in conjunction with Connolly Universal Dowel Sleeves (UDS).

Key Joints are available in 3 and 6m lengths for slab thicknesses from 100mm to 300mm.

Typical Uses

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


  • Rigid connection between key joint and Connolly Universal Dowel Sleeves 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)
CKJ1003000 1003
CKJ1503000 1503
CKJ2003000 2003
CKJ3003000 3003

Key Joint Accessories

Product CodeDescriptionLength (mm)
KJJ100Joiner to suit 100mm key joint-
KJJ150Joiner to suit 150 mm key joint-
KJJ200Joiner to suit 200 mm key joint-
KJWP4Wedge and Stakes400
KJWP5Wedge and Stakes500

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