ABSTRACT
ABSTRACT: Non-load related distresses are a major factor contributing to the need for maintenance and rehabilitation of Hot-Mix Asphalt (HMA) airfield pavements. By using pavement management system data, the quantity of these non-load related distresses can be determined. This paper summarizes data gleaned from the analysis of over 8 million square meters of HMA airfield pavement to identify the most significant types of surface distresses according to the Pavement Condition Index (PCI). These data represent 25 years of using the pavement management system, Micro PAVER, to determine the condition of U.S. Army airfield pavements. The quantity of longitudinal and transverse cracking, raveling and weathering, and block cracking was extracted from the database for various ages of pavements. In addition, the total percentage of non-load related distresses was identified for various ages of pavements. Findings from this analysis of existing data highlight the need for improved maintenance procedures to combat the need for maintenance and rehabilitation related to non-load distresses in HMA. The benefits of preventive maintenance are discussed, along with the need to monitor the application of various approaches using techniques employed by pavement management systems.
