Study On Acceptance Criteria For Pavement Surface Treatments Based On Performance-related Specifications

The concept of pavement preventive maintenance had been known by majority of highway managers, various pavement preventive maintenance (PPM) treatments had been applied to much of highway. It emphasizes adopting the right treatments for the pavement and maintaining the pavement at good condition in time to ensure travel performance and extend pavement life, when the pavement's structural capability is sufficient and there are not structural distresses.Asphalt pavement surface treatments, as 4cm within the old asphalt ultra-thin cover pavement, it is the main measures of preventive maintenance. Much of the application of pavement surface treatments is not normative at present, lack of the systematized evaluation standard to praise good and bad to the effect, especially, the acceptance criteria that related pavement performance and life cycle cost (LCC) is not involved in domestic yet at present.Performance related specifications (PRS) is a quality control system that related the life cycle performance to some magnanimity performance index, it described the the expected ratio of the key materials and construction quality, which related the basic construction characteristics that characterized pavement performance. PRS not only escribed the the expected ratio, but also used the quantitative relation that can use to predict pavement performance.Those characteristics called acceptance quality characteristics (AQCs),which can testing construction quality directly.The pavement preventive maintenance (PPM) treatments' construction quality affected by the existing pavement, also restrict the pavement's life cycle cost and performance. Relating treatments construction quality to same given performance and life cycle cost to control pavement construction quality, that suitable for quality acceptancing to pavement preventive maintenance (PPM) treatments on existing pavement.The paper use performance-related specifications the quality management system which is popular abroad in recent years to study materials, construction, performance prediction, cost analysis etc of asphalt pavement surface treatment. Then, determine the acceptance quality characteristics (AQCs) and reasonable use life prediction model to predict service life after using pavement surface treatment. And use the predicted life expectancy and design to compare the quality of construction, and then pay adjustment. Firstly, the paper introduced the framework of performance related specifications and regulate this and practical engineering proper for theoretical guidance to evaluat pavement surface treatment's acceptance quality characteristics, and build a reasonable pavement life prediction model to predict the estimate of the pavement service life. Finally use the OGFC for example, select the deflection and the pavement thickness as acceptance quality characteristics, Based on these two the acceptance quality characteristics established the pavement performance prediction model, use the predicted life expectancy and design to compared the quality of construction. Then according to the life cycle cost theoretics to make pay adjustment finally give the pay factor of this section.