Abstract The polyurea elastomer (PUA) powder modifier was prepared by the method of spraying–initial crushing–fine grinding, and then, PUA-modified asphalt produced. typical functional structure PUA identified characterized. apparent viscosity tested at different temperatures. impact particle size content on creep recovery properties high temperature investigated through multiple stress test. m...

The effect of aluminum oxide nanoparticles (Al2O3) on the 60/70 penetration asphalt cement (AC) was investigated in terms physical and rheological characteristics by using Superpave testing procedures. Al2O3 at 3, 5, 7% concentrations were blended with grade AC. Conventional procedures adopted regarding characteristics, while dynamic shear rheometer (DSR) conducted to evaluate high low temperat...

<p class="abstract">There are numerous instruments available to assess pigmentation in terms of color, melanin, and other factors, but there is no standardized or validated tool a person's glow radiance. The MSCR- radiance index (G&R)-composite scale was created with the help bio-physics background includes five important factors. intended provide an objective, scientific assessme...

Abstract In order to solve the problem of high-value utilization coal-to-oil residual direct coal liquefaction asphalt, it is compounded with SBS and aromatic oil modify matrix 9 compounding schemes are designed using orthogonal experimental methods. Dynamic frequency sweep tests DSR a simplified Carreau equation model fitted complex viscosity obtain its zero shear viscosity; creep recovery rat...

The adoption of warm mix asphalt (WMA) technologies is well accepted due to its promising environmental benefits, however, their long-term field performance not understood. This study focused on the rutting resistance WMA and companion hot (HMA) based 83 samples collected from 28 projects across United States covering four climate zones, quantified impacts for various as compared HMA. Field cor...