Reutilization of Reclaimed Asphalt Binder via Co-Pyrolysis with Rice Husk: Thermal Degradation Behaviors and Kinetic Analysis
Abstract
:1. Introduction
2. Materials and Methods
2.1. RAB and RH Materials
2.2. Preparation of RAB and RH Blends
2.3. TG-FTIR Method and Instrument
2.4. Pyrolysis Indices
2.5. Interaction Analysis
2.6. Kinetic Theory
2.6.1. Iso-Conversional Analysis
2.6.2. Combined Kinetic Analysis
2.7. Experimental Procedure
3. Results and Discussion
3.1. TG-DTG Analysis
3.1.1. Pyrolysis Characteristics
3.1.2. Interactions between RAB and RH
3.2. FTIR Results of Gaseous Products
3.3. Kinetic Analysis
3.3.1. Estimation of Activation Energy
3.3.2. Determination of Reaction Mechanisms
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Item | RAB | RH |
---|---|---|
Ultimate analysis | ||
Carbon | 82.08 | 38.12 |
Hydrogen | 9.15 | 5.05 |
Oxygen a | 1.13 | 43.14 |
Nitrogen | 0.48 | 0.56 |
Sulfur | 5.13 | 0.18 |
Proximate analysis | ||
Volatile | 87.62 | 65.44 |
Fixed carbon a | 11.83 | 18.22 |
Ash | 0.55 | 16.34 |
Ash analysis | ||
Na2O | - | 0.25 |
K2O | - | 3.86 |
CaO | 0.28 | 2.38 |
MgO | 0.02 | 0.75 |
Samples | (°C) | (°C) | (°C) | (%) | (10−11/min2 °C3) |
---|---|---|---|---|---|
RAB | 376.3 | 520.2 | 448.1 | 16.6 | 5.61 |
R9H1 | 273.9 | 531.1 | 446.7 | 18.5 | 6.74 |
R7H3 | 256.1 | 550.9 | 443.5 | 21.1 | 8.03 |
RH | 271.9 | 669.3 | 320.4 | 32.8 | 4.48 |
Samples | Combined Kinetic Analysis | Friedman Method | |||
---|---|---|---|---|---|
(kJ/moL) | (s−1) | m | n | Average (kJ/moL) | |
RAB | 188.64 ± 3.45 | 28.51 ± 0.59 | −2.050 | 0 | 195.69 |
R7H3 | 174.03 ± 2.51 | 24.02 ± 0.45 | −5.015 | −0.874 | 179.98 |
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Zhao, H.; Mi, B.; Li, N.; Wang, T.; Xue, Y. Reutilization of Reclaimed Asphalt Binder via Co-Pyrolysis with Rice Husk: Thermal Degradation Behaviors and Kinetic Analysis. Materials 2023, 16, 7160. https://doi.org/10.3390/ma16227160
Zhao H, Mi B, Li N, Wang T, Xue Y. Reutilization of Reclaimed Asphalt Binder via Co-Pyrolysis with Rice Husk: Thermal Degradation Behaviors and Kinetic Analysis. Materials. 2023; 16(22):7160. https://doi.org/10.3390/ma16227160
Chicago/Turabian StyleZhao, Hui, Bao Mi, Na Li, Teng Wang, and Yongjie Xue. 2023. "Reutilization of Reclaimed Asphalt Binder via Co-Pyrolysis with Rice Husk: Thermal Degradation Behaviors and Kinetic Analysis" Materials 16, no. 22: 7160. https://doi.org/10.3390/ma16227160