Tied joints are designed to facilitate a break in construction, without providing significant movement during drying shrinkage.
The joint typically consists of a deformed bar at mid-height of the slab, which provides load transfer. No de-bonding sleeve is provided.
The steel deformed bars should have a greater tensile capacity than the concrete cross-section, meaning that the slab will fail before the tied joint is able to open.
Tied joints don’t necessitate the use of a joint sealant as they shouldn’t open significant amounts. A well designed and formed joint should provide smooth MHE passage between two panels, without the risk of the transition being interrupted by the joint opening; reducing the risk of potential arris damage from traffic