Trr No. 1323 Materials And Construction, pp. 53-60 The use of the Corbett-Swarbrick fractionation procedure for characterization of age-hardening potentials of asphalts was studied. The fractionation procedure was used to separate asphalts into four different fractions (asphaltenes, saturates, naphtene-aromatics, and polar-aromatics), to identify trends in the changes of proportions of these…