Chemical analysis of surface and bulk of asphalt binders aged with accelerated weathering tester and standard aging methods

This paper presents analysis of chemical changes in asphalt binder samples that were aged using an accelerated weathering tester, which involves UV radiation and direct aging of the binder surface. It also provides a comparison with chemical changes in the same binders but aged with standard methods. Fourier Transform Infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) results show that the accelerated weathering tester caused more...