RIGID PAVEMENT NETWORK REHABILITATION SCHEDULING

The development and application of a scheme, in the form of a computer program, to order the priority and schedule a set of rigid pavements for rehabilitation within a specified time frame and budget constraints are presented. The scheme makes use of a distress index to order the priority of a group of pavement sections and to decide when a pavement has reached its terminal condition. The distress index is calculated by combining into a single number the various distress manifestations that occur in a pavement section. The initial pavement condition is determined from field distress condition surveys and the future condition is determined by means of distress prediction models. The immediate application of the computer program is to generate lists of candidate pavements for rehabilitation; however, the use of the program can be extended to analyze the effect of several different budget policies on the condition of the pavement network.