Investigation of the Inter-Relationship between Base Pavement Stiffness and Asphalt Overlay Compaction

摘要

Because of high tire pressures and gross wheel loads of modern aircraft, airport pavement construction requirements are more demanding than those required for road construction. The report summarizes a research project to investigate the degree that base pavement support influences the compactibility of an alphaltic concrete overlay. The project involved nondestructive testing to quantify stiffness of base pavements prior to overlay, unit weight determination of overlays after construction, computation of in-place air voids and percent Marshall densities, and use of statistical techniques to analyze correlations between stiffness and compactibility. In addition, FAA Eastern Region in-place air voids compaction standard is compared with the FAA National percent Marshall density compaction standard.