As the State of California continues to grow, demand for enhanced infrastructure such as roadways and highways escalates. In view of the current average highway lifespan of 15–20 years, the improvement of asphalt binders leads to material sustainability by decreasing required maintenance and increasing the lifespan of roadways. In the present investigation, enhancement of asphalt binder properties was achieved by different methods of mixing varying compositions of graphene nanoparticles with an SBS polymer and asphalt binder. Additionally, experimental evaluation and comparison of the rheological and mechanical properties of each specimen is presented. Graphene nanoparticles have attracted great curiosity in the field of highway materials due to their incredible rigidity, even in small quantities. Addition of as little as 1.0%nanoparticles in combination with polymers in an asphalt binder is expected to increase the rigidity of the material while also maintaining the beneficial polymer characteristics. Evaluation of the effect of the mixing design established that the methods for application of graphene to the polymer-modified asphalt binder are critical in the improvement of a roadway, resulting in resistance to premature aging and strain from constant road operation.
Digital Object Identifier
Mineta Transportation Institute URL
Asphalt additives, Carbon nano particles, Mixing design, Bituminous paving mixtures, Mechanical properties
Construction Engineering and Management | Structural Materials | Transportation Engineering
Sara Moghtadernejad, Ehsan Barjasteh, Ren Nagata, and Haia Malabeh. "Enhancement of Asphalt Performance by Graphene-Based Bitumen Nanocomposites" Mineta Transportation Institute Publications (2021). https://doi.org/10.31979/mti.2021.1918