Researchers

Nagham Taleb – Fayez Salman – Bassam Sultan and Bassem Ali

Published in

Homs University Journal, Civil and Architectural Engineering Series, volume 44, issue 14, January 2023.

Abstract

The widespread use of asphalt paver requires continuous development and permanent research to identify the behavior of its constituent materials and the defects and problems that it may be exposed to, and thus research to improve its specifications in a way that ensures its resistance to defects and loads that it may be exposed to, thus extending the service life of the paving layers and increasing its durability.

In this research, the effect of graphite on the short and long-term aging of hot asphalt mixtures was studied, by determining the ideal proportions for the addition of graphite by conducting tests on the properties of the modified asphalt binder, and then producing reference samples of hot asphalt modified with the ideal proportion of graphite and subjecting them to two short aging periods. and long-term, and then study some mechanical properties before and after aging, such as Marshall stability, indirect tension, water damage test, and calculating aging indices to determine the effect of the addition on the asphalt aggregate.

The results of the study showed that adding (10) % by weight of asphalt binder is considered an optemum percentage to improve the resistance properties of asphalt mixtures to short and long term aging effectively compared to the results of unmodified mixtures.

Keywords: Graphite - short-term aging - long-term aging – Stability – ITS.

Link to full paper

https://journal.homs-univ.edu.sy/index.php/Civil/article/view/1558/1469