This is an official RMIT University document designed to effectively compare the different types of shear connectors available at the time of publication.
Simple control joints such as score line cuts or saw cuts are commonly used in the construction of concrete footpaths. These joints do not have a load transfer mechanism and therefore displacement of the concrete slab panels will create a differential vertical movement at the joint when the footpaths are affected by tree root invasion or by soil movement. This differential vertical movement of adjoining slabs create a major tripping hazard to pedestrians. In this study, three types of joiners (connectors) made of aluminium, EPDM rubber and PVC have been studied to examine their capability for minimizing the tripping hazard.