Carbon nanotubes can modify (improve) the rheological properties of the asphalt binder.
Thank you, but your link is abour concrete, and my question is about asphalt binder.
What is the main idea of using carbon nanotubes? Substitution of filer? If this is the case, you only need to analyze the solution economically, and then decide if it is a good solution. If you have other ideas, in my opinion the bitumen will reduce the effect of the cabon nanotubes, because it will isolate a significant part of the CN.
Dr. Silva, thanks for you answer. The idea is use them as filler in order to improve the mechanical properties of the asphalt like the plastic wastes. We found very interesting results with carbon nanotubes. For instance, with the addition of the CNTs and the RTFOT aging, the elastic and viscous moduli evaluated at high temperatures increases, as the stiffness is increased which leads to an increase in the shear modulus. In the case of low temperatures, the NTC contribute to the magnitudes of the modules is reduced, thereby decreasing the susceptibility to fatigue.
Moreover, the modified asphalt with NTC (2 wt%) has a reduction in rutting of 19% for the final analysis time. The average reduction in the deformations is close to 31%, so that addition of NTC increases rutting resistance and reduces the susceptibility to damage associated
It is limted for Carbon nanotubes to improve the asphalt mixture performance. But the carbon nanotubes is expensive materias for road. I don't think it is best choice to use the carbon nantubes in pavement just now.
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