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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology

Viscosity Characteristics of Modified Bitumen

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Author Suleiman Arafat Yero, and Mohd. Rosli Hainin
ISSN 2225-7217
On Pages 500-503
Volume No. 2
Issue No. 5
Issue Date June 01, 2012
Publishing Date June 01, 2012
Keywords Viscosity, Sasobit, Bitumen, Rheology, and Modification


The effect of commercial additive Sasobit wax (S) on the viscosity characteristics of bitumen 60/70-penetration grade is yet to be fully understood. The viscosity of bitumen is the measure of its resistance to flow which affects workability, and resistance to deformation of the mixture. This study reviewed the bitumen modification process in relation to warm mix asphalt (WMA) technology, using S as a modifier. The study investigated the viscosity measurements of modified bitumen, using the Brookfield viscometer. The binders mixed with various percentage of the wax S 1%, 2%, 3%, 4%and 5% were investigated. The results from the study showed the viscosity of the binder decreasing at higher temperatures while at midrange temperatures the viscosity increases with an increase in the additive. This study has provided a valuable data on the effect of the additive S on increasing the dynamic viscosity of the binder at low temperature and decreasing the kinematic viscosity at high temperature, been attributed to the presence of the S wax with high hydrocarbons molecular content in the binder, which is expected to improve the viscosity properties of the modified binder and enhance its resistance to deformation when used in warm asphalt concrete mixtures.

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