Research on Investigation of Fissure Diseases of Cement Pavement And Treatment For Reflection Cracks in Asphalt Overlay of Cement Concrete Pavement

On the basis of an example for rebuilding of old cement concrete pavement Hengwen in Hubei, we have inquiried into and classified the destruction condition of the old cement concrete pavement, investigated the cracks diseases of the original concrete pavement, and analysed the reasons. The study on prevention and treatment measure for the reflective crack is made from the angle of the choice of materials, materials performance test and structure layer thickness. It refered to use bidirectional glass fibre geogrid to prevent and control reflection cracks of old cement concrete pavement covered with bituminous layer,meanwhile suit measures to local conditions,set down construction technology with care as well. It is proved that rational choice of schemes for preventing reflection cracks is one of the effective methods of preventing reflection cracks.