CCL Bonded systems incorporate groups of 3, 4, 5 or 6 strands contained within a tendon in a flat duct anchored at each end by CCL Flat Anchorages. This allows the tendons to be positioned close to the surface to obtain maximum eccentricity within the slab.

The tendons are laid in the slab according to specific profiles before pouring concrete. Ducts allow for free relative movement of the strand with respect to the surrounding concrete during stressing. After stressing the strands individually with CCL hydraulic jacks and attaching them to the anchorages, the ducts are filled with cementbased grout that fully bonds the strands to the concrete through the duct
wall and all along the length of the tendon.

The grout creates an alkaline environment around the steel for permanent corrosion protection.The strands are attached from one end to a CCL flat anchorage, and can be left exposed from the other end and embedded in the concrete through enough length that ensures their anchoring by bonding.CCL’s bonded system requires a reduced amount of ordinary reinforcement as bonding allows the strands to reach higher strength at ultimate state.