Development of Performance Specifications for Flexible Pavements in Ontario

摘要

Increasing portions of federal, provincial and municipal resources are being allocated to preserve and maintain Canada's roadways. Currently, most materials and construction specifications for pavement rehabilitation and construction activities provide little or no linkage between quality assurance methods and the in-service performance of the treatment. The Ministry of Transportation of Ontario (MTO) is moving to develop and implement performance specifications to bridge this gap. MTO defines performance specifications as specifications that describe how the finished product should perform over time. This paper will describe the framework used to develop and implement performance specifications for flexible pavements in Ontario. Details on modelling the performance requirements, measuring performance, and setting of acceptance criteria will be presented. Implementation of these specifications in traditional Design-Bid-Build contracts and in innovative warranty-based alternate delivery contracts will be discussed.