a Straight-reduced Arkansas asphalt.. b Adapted from Speight (1992).. c T 0 = no air-blowing time; T 0 < T 1 < T 2 < T 3.. Although no two asphalts are chemically identical and chemical analysis cannot be used to define the exact chemical structure or chemical composition of asphalt, elemental analyses indicate that most asphalts contain 79–88 wt% carbon, 7–13 wt% hydrogen, traces to 3 wt ...
