As we know, concrete pavements are used as overlays on both cement concrete pavements and asphalt concrete pavements. In order to design overlays, we can withdraw from existing pavement or considering that. The most famous types of cement concrete overlays on asphalt concrete pavements are known as “whitetopping”. Using from these overlays is increased due to maintenance and rehabilitation of asphalt concrete pavements with minimum cost and further life time. Commonly, a thin layer of hot mix asphalt is used to prevent from bonding as known separation layer. The reason for using bituminous material as preventing from bonding between layers is to avoid and retard propagation of cracks from old pavements into new pavements. The purpose of this research is to determination tensile stress in bottom of overlay and deflection of overlay. Parameters of cement concrete overlay including tensile stress in interface of separation layer and overall deflection of pavement and deflection of each layers will be determine.
In order to localize maintenance and rehabilitation methods in our country, relaying on our science and experience must be schedule. Using from cement concrete overlay construction methods with lesser cost and longevity and simple rehabilitation methods can lead to sustainable development in our country.