A Model of Pyrolysis Carbon Black and Waste Chicken Feather Using a Response Surface Method in Hot-Mix Asphalt Mixtures

Abstract

Research on waste tire pyrolysis carbon black (PCB) in bitumen mixtures indicates that it has excellent high-temperature rutting resistance; however, the degradation of low-temperature crack resistance and water stability of PCB-modified asphalt limits its wide application. Therefore, the low-temperature crack resistance and water stability of PCB-modified hot-mix asphalt (HMA) were enhanced by addition of waste chicken feather (WCF). Based on the response surface methodology (RSM), a variance analysis (ANOVA) and P-value test of the model response coefficient were carried out, and the performance prediction models of percentage air voids (VV) in bituminous mixtures, 30-min Marshall stability (MS), and 48-h MS were obtained. The interaction effects of different independent variables on response variables were analyzed. In addition, the optimal solutions of multiresponse variables obtained by the response optimizer were 0.20% PCB content, 0.36% WCF content, shearing time of 5.78 min for WCF, and 6.66% asphalt-aggregate ratio. The corresponding performance index prediction values were 4.00% VV, 12.80 kN 30-min MS, and 12.65 kN 48-h MS. The road performance test results demonstrated that incorporating WCF improved the high-temperature rutting resistance, low-temperature crack resistance, and water stability of PCB-modified hot-mix asphalt. This study provides a precise performance prediction model for adding PCB and WCF to HMA.

Upcycling of plastic and tire waste toward use as modifier for asphalt binder

“…Although experimental studies have proven that mixing char derived from plastic or tire waste with bitumen improves the bitumen properties (Table 3), each study has used its own procedure and characterization method. This means that direct comparison of different bitumen modification Gan et al 41 10 Tire waste GF-70 bitumen methods with plastic-and tire-waste-derived chars is rather difficult. This problem needs to be resolved for further development and optimization of the use of plastic-and tire-waste-derived chars in bitumen modification.…”

Optimization Design of Asphalt Mixture Composite Reinforced with Calcium Sulfate Anhydrous Whisker and Polyester Fiber Based on Response Surface Methodology

“…Furthermore, this way saves laboratory time and reduces the manpower and material consumption. It is widely employed in chemical industry [ 26 , 27 ], materials science [ 28 ], building materials engineering [ 29 ], and pavement engineering [ 30 , 31 , 32 ]. Ahmed I. Nassar et al applied RSM to optimize the mix proportion of emulsified asphalt mixtures [ 33 ].…”