Abstract
This paper describes a numerical procedure for quantifying the effects of varying concrete pavement slab temperature and slab length on joint load transfer for a given jointed concrete pavement design. The joint load transfer model includes a joint opening size versus slab temperature relation developed by the Michigan Department of Transportation (MDOT). Instrumentation measurements from Denver International Airport and other field test sites are used to establish a fundamental relation among slab temperature, joint opening size, and deflection load transfer efficiency. Numerical methods initially developed by Skarlatos and Ioannides have been calibrated to detailed site evaluations of heavy duty airfield concrete pavements and are used to relate deflection load transfer to linear-elastic joint stiffness, a key mechanistic joint behavior parameter. The sensitivity of joint load transfer and joint stiffness to variations in annual slab temperature and slab length is presented.
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