Effect of Carbon Black Nanoparticles from the Pyrolysis of Discarded Tires on the Performance of Asphalt and its Mixtures

[...]two kinds of asphalt mixtures of AC-13 and AC-20 were created to investigate the influence of TPCB on the pavement performance of asphalt mixtures. 2. Chemical Structure of TPCB Figure 2 shows the FTIR spectrum of TPCB. Because of the simple graphite-like molecular structure of TPCB, most of the chemical bonds in TPCB are non-polar bonds. The higher the DS, and the smaller the rutting depth, the better the anti-rutting performance of the asphalt mixture. [...]TPCB can improve the anti-rutting performance of asphalt mixtures, and the improvement effect of TPCB on AC-13 mixture is more obvious than that of the AC-20 mixture. From Figure 9, we see that the AC-13 mixture has a larger flexural strain than the AC-20 mixture. Because of the softening effect of the 1.2% dosage of AHO and 0.1% higher oil aggregate ratio, the flexural strain experienced by the TPCB/GF70 asphalt mixtures is much greater than that of the GF70 asphalt mixtures, and the flexural moduli of TPCB/GF70 asphalt mixtures are lower than those of the GF70 asphalt mixtures.