Author(s)

Bat-Erdene Erdenetsogt^*, Zoltuya Khashbaatar, Ilchgerel Dash, Battsetseg Tsog

Department of Chemical Engineering, School of Applied Sciences, Mongolian University of Science and Technology, Ulaanbaatar, Mongolia.

There are numerous methods and additives available to improve the durability and quality of road bitumen. A coal tar obtained by coal coking was distilled in a laboratory into fractions of initial boiling point IBP-180℃ (gasoline-like fuel), 180℃ - 360℃ (diesel-like fuel), and >360℃ (residue or coal tar pitch). The coal tar pitch was added into road bitumen by up to 1 - 5 wt% and investigated the alteration of physical and chemical properties. The physico-mechanical properties of coal tar pitch and bitumen blends, as well as the chemical group composition, were determined using standard techniques (MNS) and the SARA method, respectively. Results of 3% coal tar pitch addition into bitumen enhanced ductility by 12.4% and softening point by 1.6℃. We found that blending with bitumen coal tar pitch as a modifier could improve bitumen properties.

Modified Bitumen, Blending, Coal Tar Pitch, Ductility, Softening Point

Erdenetsogt, B. , Khashbaatar, Z. , Dash, I. and Tsog, B. (2023) Feasibility Investigation of Bitumen Properties by Blending of Coal Tar Pitch. Advances in Chemical Engineering and Science, 13, 93-104. doi: 10.4236/aces.2023.132008.