ABSTRACT
Durability and sustainability are the main objectives of the pavement preservation technology. An cost-effective strategy, known as Preventive Maintenance Treatment (PMT), is always considered as an useful manner leading to a better pavement quality at lower total costs by applying treatments before the pavement deteriorates to a poor condition level requiring a corrective treatment. For the asphalt pavements in Beijing, various PMTs were conducted during recent years to gradually replace the previous corrective maintenance strategy. This paper presented a framework for characterizing the PMTs performance applied at different pavement age. The data collected from the local transportation agency were analyzed to characterize the performance decay trends of new constructed pavements and further compare the enhancements resulted from PMTs conducted at different timing scenarios. The analysis approach presented here would be of help to select appropriate PMT to meet both the cost-effective goal and preservation purposes in future pavement management practice.
