Recalibration of the Asphalt Layer Coefficient. Dr. David H. Timm, P.E. Mrs. Kendra Peters-Davis. Overview. Current ALDOT pavement design based on AASHO Road Test Structural coefficients (a i ) are key inputs Express relative “strength” of component layers
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Dr. David H. Timm, P.E.
Mrs. Kendra Peters-Davis
a1 = 0.44 (R2 = 0.08)
a1 = 0.55 (R2 = 0.74)