This research was done to improve the local bitumen specifications 60-70 (Banias
refinery output) using Cement Bypass DUST(CBPD) so that it becomes more resistant to
high temperatures (Short- Term- Aging), in addition to reduce the harmful waste ma
terials.
The cement bypass was supplied by Tartous Cement Company and added to
bitumen with different percentages namely, 12%, 14%, 16% and 18% (by the weight of
bitumen). some experiments were held to determine the properties of modified and
unmodified bitumen (Penetration )25, 15, 4(∁°- Ductility- Softening point), then We
returned previous experiences after (Loss- on- heating test) and exposure to (Short- Term-
Aging) on the modified and unmodified bitumen, and the results were within specification
limits, were Compatible with previous reference studies and these additions have to
improve the resistance of bitumen to high temperatures. The optimum cement Bypass Dust
ratio was found to be 14% of the weight used bitumen.
