ABSTRACT
Ultra-Thin Continuously Reinforced Concrete Pavement (UTCRCP) is designed using Conventional Concrete Pavement (CCP) design methodology. The primary structural component of this innovative pavement type consists of a heavily reinforced 50 mm high performance concrete layer. This alternative concrete material and geometry result in a flexible overlay that allows significant deflections. Centrifuge modelling of three multi-layer systems was conducted to investigate concrete overlay and substructure interaction. It was observed that non-vertical strains occur between the wheel paths, as well as cracking of the cement-stabilized layer and rutting in the wheel paths. These observations lead to the conclusion that CCP design methods should not be used to design UTCRCP.
