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A platform for research: civil engineering, architecture and urbanism
Influence of rejuvenator preheating temperature and recycled mixture’s curing time on performance of hot recycled mixtures
https://orcid.org/0000-0001-6371-1414
Highlights Increasing the preheating temperature and diffusion time of rejuvenator can enhance its diffusion. The 110℃ rejuvenator preheating temperature is recommended to improve diffusion effect. The 3-hour recycled mixture’s curing time is recommended to improve its performance.
Abstract The recycled hot mix asphalt mixture performance is improved by a rejuvenator with good diffusion ability. This paper investigates the rejuvenator-aged asphalt diffusion and its influencing factors, including the rejuvenator's preheating temperature and curing process of recycled mixtures. A molecular dynamic simulation of the diffusion process between rejuvenator and aged asphalt is performed. Its results are then validated by a gel permeation chromatography test. Laboratory tests are also employed to evaluate these two factors' influence on the recycled mixture's performance on a macroscale. Simulated and experimental results strongly indicate that a proper combination of rejuvenator preheating and recycled mixture curing improves the rejuvenator diffusion ability and the recycled mixture performance. Following this, the 110℃ preheating temperature of rejuvenator and the 3-hour curing time after completing the mixing process of the hot plant-mix asphalt mixture are recommended based on the above results.
Influence of rejuvenator preheating temperature and recycled mixture’s curing time on performance of hot recycled mixtures
https://orcid.org/0000-0001-6371-1414
Highlights Increasing the preheating temperature and diffusion time of rejuvenator can enhance its diffusion. The 110℃ rejuvenator preheating temperature is recommended to improve diffusion effect. The 3-hour recycled mixture’s curing time is recommended to improve its performance.
Abstract The recycled hot mix asphalt mixture performance is improved by a rejuvenator with good diffusion ability. This paper investigates the rejuvenator-aged asphalt diffusion and its influencing factors, including the rejuvenator's preheating temperature and curing process of recycled mixtures. A molecular dynamic simulation of the diffusion process between rejuvenator and aged asphalt is performed. Its results are then validated by a gel permeation chromatography test. Laboratory tests are also employed to evaluate these two factors' influence on the recycled mixture's performance on a macroscale. Simulated and experimental results strongly indicate that a proper combination of rejuvenator preheating and recycled mixture curing improves the rejuvenator diffusion ability and the recycled mixture performance. Following this, the 110℃ preheating temperature of rejuvenator and the 3-hour curing time after completing the mixing process of the hot plant-mix asphalt mixture are recommended based on the above results.
Influence of rejuvenator preheating temperature and recycled mixture’s curing time on performance of hot recycled mixtures
https://orcid.org/0000-0001-6371-1414
Highlights Increasing the preheating temperature and diffusion time of rejuvenator can enhance its diffusion. The 110℃ rejuvenator preheating temperature is recommended to improve diffusion effect. The 3-hour recycled mixture’s curing time is recommended to improve its performance.
Abstract The recycled hot mix asphalt mixture performance is improved by a rejuvenator with good diffusion ability. This paper investigates the rejuvenator-aged asphalt diffusion and its influencing factors, including the rejuvenator's preheating temperature and curing process of recycled mixtures. A molecular dynamic simulation of the diffusion process between rejuvenator and aged asphalt is performed. Its results are then validated by a gel permeation chromatography test. Laboratory tests are also employed to evaluate these two factors' influence on the recycled mixture's performance on a macroscale. Simulated and experimental results strongly indicate that a proper combination of rejuvenator preheating and recycled mixture curing improves the rejuvenator diffusion ability and the recycled mixture performance. Following this, the 110℃ preheating temperature of rejuvenator and the 3-hour curing time after completing the mixing process of the hot plant-mix asphalt mixture are recommended based on the above results.
Influence of rejuvenator preheating temperature and recycled mixture’s curing time on performance of hot recycled mixtures
Li, Mingchen (author) / Liu, Liping (author) / Xing, Chengwei (author) / Liu, Lingxiao (author) / Wang, Huayu (author)
2021-05-10
Article (Journal)
Electronic Resource
English
Effect of bio-rejuvenator on recycled porous asphalt mixes
| Taylor & Francis Verlag | 2023