Abstract

This paper analyzed joint load transfer data from two Federal Aviation Administration (FAA) projects at Denver International Airport (DIA) and at the National Airport Pavement Test Facility (NAPTF). These data have shown significant differences between doweled and non-doweled joints as well as between dummy and tied joints. Based on analysis performed, the paper offers the following conclusions: The interlock mechanism is effective in transferring load through the joints in pavements; the direction of load transfer has a significant influence on load transfer efficiency for interlock joints; in rigid pavements, doweled joints can be treated as equivalent interlock joints by applying the principles of beam theory from classical mechanics; and, heavy weight deflectometer tests conducted showed no significant influence of subgrade CBR on measured joint load transfer efficiency.

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