Abstract: The feedstock of 10#construction asphalt has been devel-oped from low pouring-point vacuum residue to high pouring-point vacuum residue and slurry. The 10#construction asphalt was developed by oxidation reaction using Dagang vacuum-residue of mixed high pouring-point oil, FCC slurry and low
pouring-point vacuum residue as the feedstock under experimen-tal conditions such as different proportion, air flow rate and oxi-dation temperature. On the basis of GB/494-85, whether the indexes of softening point, needle penetration and ductility ac-cord with the standard has been investigated. Results show that: (1) qualified 10#construction asphalt can be derived from
the oxidation of high pouring-point vacuum residue, (2) quali-fied 10#construction asphalt can be produced by low pouring-point vacuum residue mixing with a certain proportion of FCC slurry, (3) 10#construction asphalt can be produced by high pouring-point vacuum residue mixing with FCC slurry.

Key words: high pouring-point vacuum residue, low pour-ing-point vacuum residue, slurry, construction asphalt