Characterisation of differential shrinkage of bonded mortar overlays subjected to drying

This work presents an experimental technique developed to assess sensitivity of cracking due to the property gradients in the layers of cement-based materials used as a bonded overlay. The non-uniform moisture distribution in materials causes differential length changes as a result of the combination of shrinkage, creep and strain relaxation effects. In this study, several tests are used for the purpose of predicting the differential behaviour...