The objective of this project was to analyse the initial reset of condition, otherwise referred to as the performance jump (PJ) of pavement condition based on various pavement maintenance treatment interventions. The specific pavement defects studied in this project for the Northland region of New Zealand (NZ) were rutting and longitudinal roughness. This paper will discuss the results of two common NZ periodic rehabilitation treatments; minor levelling and in-situ stabilisation. The results demonstrated that the treatment performance depended upon the level of defect trigger that initiated the treatment. Statistical analysis shows strong evidence that the more heavily deteriorated pavements had a greater initial PJ when treated, coinciding with a decreased rate of deterioration post-treatment. In-situ stabilisation was found to be the most effective treatment for pavement rutting initially, and also for two years after treatment. For roughness, minor levelling demonstrated the best initial PJ, and in-situ stabilisation had the greatest overall decrease in roughness. (a) For the covering entry of this conference, please see ITRD abstract no. E220164.
Samenvatting