Summary: Accuracy of the Two Common Semi-
Analytical Equations in Predicting Asphalt
M. Emin Kutay* -- Ahmet H. Aydilek**
Turner-Fairbank Highway Research Center (TFHRC)
6300 Georgetown Pike,
McLean, Virginia 22101, USA.
** Assistant Professor,
Civil and Environmental Engineering
1163 Glenn Martin Hall, University of Maryland
College Park, Maryland 20742, USA
ABSTRACT: Three-dimensional internal pore structures of various asphalt specimens
with varying mix-designs and compaction levels were generated using X-ray Computed
Tomography (CT) technique. Pore structure parameters were computed using image
processing algorithms and estimated permeabilities using two semi-analytical equations were
compared to laboratory-based vertical permeability. Furthermore, an analysis method was
proposed to improve the accuracy of the equations.