The aging behavior of reclaimed asphalt mixture with vegetable oil rejuvenators

Suo, Zhi; Yan, Qiang; Ji, Jie; Liu, Xiaoyu; Chen, Huan; Zhang, Ao

doi:10.1016/j.conbuildmat.2021.123811

Cited by 22 publications

(3 citation statements)

References 13 publications

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“…With the increment in the virgin bitumen dosage in the compound rejuvenator, the slope value in correlation equations reduces dramatically. It implies that the virgin bitumen exhibits a weaker function in restoring the penetration-grade of aged bitumen than pure rejuvenators [ 21 ].…”

Section: Resultsmentioning

confidence: 99%

“…Guo et al [ 20 ] found that the reactivation effect of the warm-mix rejuvenator on the complex modulus of aged binder was more significant than the aromatic oil. Additionally, Suo et al [ 21 ] evaluated the aging behavior of vegetable oil (corn oil and soybean oil) in rejuvenated bitumen and asphalt mixture. They proved that the rheological properties of rejuvenated binders remarkably depend on the rejuvenator type and dosage.…”

Section: Introductionmentioning

confidence: 99%

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A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture

Ren

Liu

et al. 2022

Materials

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This study aims to comprehensively investigate the rejuvenation efficiency of various self-developed compound rejuvenators on the physical, mechanical, and aging properties of aged bitumen, asphalt mortar, and mixture. The results revealed that the restoration capacity of vacuum distilled-oil rejuvenators on high-and-low temperature performance-grade of aged bitumen is more significant. In contrast, an aromatic-oil based rejuvenator is good at enhancing low-temperature grade and aging resistance. Moreover, the temperature and time of the curing conditions for mixing recycling of asphalt mixture were optimized as 150 °C and 120 min. Furthermore, the sufficient anti-rutting, structural stability, and moisture resistance of recycled asphalt mixture affirmed the rejuvenation efficiency of compound rejuvenators.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture

Ren

Liu

et al. 2022

Materials

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“…With the continuous development of highway construction in China, a large amount of asphalt raw materials is consumed in the construction and maintenance of roads every year, and a large amount of waste asphalt mixture is produced in the maintenance of old roads. If this situation cannot be effectively dealt with, it will face an increasingly serious shortage of asphalt pavement raw materials and a large amount of waste asphalt mixture accumulation [1][2][3]. Therefore, the recycling of aged asphalt mixture through regenerant is the best solution, which can greatly reduce the consumption of petroleum asphalt and reduce the accumulation of aged asphalt material, and has significant economic and social benefits, it is an important research question of asphalt pavement maintenance of recycling asphalt [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Study on rheological properties of POE/VO compound recycled asphalt

Mei,

Hu,

Zheng

et al. 2023

PLoS ONE

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In order to improve the high temperature performance of Vegetable oil recycled asphalt, this study used Polyolefin elastomer (POE) and vegetable oil (VO) to compound recycled aging asphalt. The properties of recycled asphalt were compared and analyzed by conventional physical properties and high & low temperature rheological tests. The results show that 8% VO content can achieve the best regeneration effect. Based on this VO dosage, a variety of POE/VO combination mixture schemes were designed and tested to obtain excellent deformation resistance of recycled aging asphalt under high temperature environments. The POE/VO combination with an appropriate dosage can restore the high temperature deformation resistance and elastic recovery performance even beyond the pre-aging level, and increase the critical temperature by 4~10°C. Considering the physical properties and rheological properties of asphalt, the recommended ratio of POE/VO composite recycled asphalt is 8% VO+4% POE and 8% VO+6% POE.

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Study on Performance of Reactive Diluted Cold Patch Asphalt Fluid

Suo,

Xu,

et al. 2024

Lecture Notes in Civil Engineering

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A reactive dilution type of cold patch asphalt liquid was developed in this study using acrylate epoxidized soybean oil (AESO). The AESO was employed as a reactive diluent to replace a portion of conventional solvents. The curing of the cold patch asphalt liquid was facilitated through photoinitiation to enhance the road performance of the cold patch asphalt mixture. An orthogonal experimental design method was used to optimize the proportions of various components, followed by laboratory experiments to investigate the performance of the developed reactive dilution type of cold patch asphalt liquid. The research results indicated that AESO could replace a portion of solvents and significantly reduce the viscosity of the asphalt. The best improvement in the rheological properties of the cold patch asphalt was achieved when the dosage of AESO was 4%. Further increasing the dosage of AESO did not significantly enhance the performance improvement and instead increased viscosity, which was unfavorable for construction. SEM observations revealed the formation of a uniform network structure in the asphalt after curing with AESO, which can enhance the road performance of the cold patch asphalt mixture. The road performance of the reactive dilution type of cold patch asphalt mixture was also preliminarily evaluated through Marshall stability tests.

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The aging behavior of reclaimed asphalt mixture with vegetable oil rejuvenators

Cited by 22 publications

References 13 publications

A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture

A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture

Study on rheological properties of POE/VO compound recycled asphalt

Study on Performance of Reactive Diluted Cold Patch Asphalt Fluid

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