Investigation of Various Methods for Minimising Uneven Displacements in Pedestrian Concrete Pavements

Pedestrian concrete pavements are widely used around the world. Simple control joints such as score lines or saw cuts are provided to accommodate cracking of the pavements. However, after the pavement cracks at the score line or saw cut, as normally happens, the two adjoining slabs are free to move up and down independently of each other. The differential vertical movement of adjoining slabs affects the serviceability of the pavement and creates tripping hazard to pedestrians. In order to overcome this problem, an experimental investigation using CFRP dowels, aluminium joiners, crack inducers and modified crack inducers have been undertaken to determine the differential vertical movement to minimise the uneven displacement.