Although our knowledge of the behaviour of roads and road pavement design has advanced considerably in recent years, there is a lack of good practical advice on the most cost-effective engineering solutions for the repair and rehabilitation of concrete roads. Rigid (concrete) pavements make up the majority of the paved road network in the Philippines, and this lack of knowledge has often resulted in inappropriate rehabilitation solutions. Field trials, using a variety of different rehabilitation treatments and overlays totalling about 9.5 km have been constructed at five separate sites. After several years of performance monitoring, an interim guideline has been prepared to help professional highway engineers in the Philippines to make the best decisions. Guidance is given on the identification of the common modes of distress and the most appropriate maintenance and rehabilitation methods. These are based on a combination of the research programme itself and on the experiences of other highway authorities elsewhere in the world. (a) For the covering entry of this conference, please see ITRD abstract no. E214938.
Samenvatting