Short-term aging resistance investigations of polymers and polyphosphoric acid modified asphalt binders under RTFOT aging process

Liu, Xiaoming; Li, Tingyu; Zhang, Henglong

doi:10.1016/j.conbuildmat.2018.10.060

Cited by 36 publications

(6 citation statements)

References 12 publications

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“…The G* value of SBSMA increased, thus indicating improved shear deformation resistance under the action of AW. Moreover, δ reflects the viscoelastic response of asphalt materials [ 54 , 55 ]. Under the same test conditions, the larger the content of BP, RS, and CC, the smaller the δ of the SBSMA, this observation indicates that these three types of AW can significantly enhance the elastic response of the SBSMA.…”

Section: Resultsmentioning

confidence: 99%

Study on the high-temperature and aging properties of agricultural waste-modified asphalt based on rheology

Zhang

2023

PLoS ONE

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The modifier of road materials from agricultural waste (AW) as raw material has been widely noticed. Considering the environmental impact of AW treatment and the National policy on the promotion of resource reuse, the feasibility of four AW (namely, bamboo powder, rape straw, corn cob, and wheat straw) for styrene butadiene styrene (SBS) asphalt modification is studied from the properties and mechanism perspectives. Through properties evaluation tests (such as the dynamic shear rheometer, multiple stress creep recovery, and rotating thin film oven test), the influence of four AW and different mixing amounts on the properties of SBS modified asphalt pavement is analyzed from the aspects of high-temperature deformation resistance and anti-aging properties. The results reveal that the four AW can improve the SBS asphalt’s high-temperature deformation resistance and anti-aging properties, among which rape straw has the most significant improvement effect. In addition, through the fourier transform infrared spectroscopy test, the microscopic mechanism of the AW/SBS composite modified asphalt binder is revealed from the functional groups. The analysis shows that the AW is physically mixed with the SBS asphalt binder, which inhibits the growth of sulfoxide groups and the cracking of the SBS modifier during aging.

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Section: Resultsmentioning

confidence: 99%

Study on the high-temperature and aging properties of agricultural waste-modified asphalt based on rheology

Zhang

2023

PLoS ONE

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“…However, due to complex factors such as high temperature, moisture, oxygen, solar radiation, reactive oxygen species such as NO x and O 3 , etc., the asphalt will suffer ageing during its service life [4][5][6][7]. In this process, the asphalt undergoes chemical component migration, microstructure transformation, and performance change [8,9]; it is transformed from the original "soft" structure to a "rigid and brittle" structure after aging [10]. This triggers and aggravates damage to the asphalt pavement structure because of other processes, such as fatigue and cracking, and severely affects the usability of asphalt pavement [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Multiscale Evaluation of Asphalt Aging Behaviour: A Review

Zhen

Kang²,

Liu

et al. 2023

Sustainability

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The performance of asphalt pavement will deteriorate gradually due to oxidation, also named the ageing of asphalt binders. In this study, the research progress on the multiscale evaluation of asphalt aging behaviour in the past decade was reviewed to further analyse the evolution law of asphalt aging behaviour and determine the asphalt aging mechanism. Firstly, artificial aging methods were introduced, the factors affecting asphalt aging behaviour were analysed, and the changes of asphalt properties before and after aging were identified. Secondly, the methods and research progress in terms of the evaluation of asphalt aging degrees were summarised from the macro-, mesoscopic-, micro-, and nanoscales. Finally, considering extensively studied rheological properties as an example, the correlations among the rheological properties of asphalt in the aging process and the conventional physical properties, chemical composition, microscopic properties, nano-molecular dynamics, and other parameters were analysed. The results show that various scales are interrelated, and the multiscale evaluation of asphalt aging can provide a more comprehensive prediction of the extent of asphalt aging. The correlation between multiple scales enables a thorough analysis of the mechanism of asphalt aging and the evaluation of asphalt aging behaviour at multiple scales.

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“…Asphalt aging will lead to a series of problems such as road cracking, rutting, and potholes [5,6]. Asphalt aging seriously affects the service performance of pavement [7][8][9][10]. Therefore, how to restore aged asphalt to its initial state has become an important topic for scholars.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Microscopic Properties of the Oil–Stone Interfacial Phase of a Reclaimed Asphalt Mixture Based on Molecular Dynamics Simulation

Cao,

Wang,

et al. 2023

Coatings

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In recent years, there has been a growing body of research focused on aged asphalt and recycled asphalt. Nevertheless, despite diligent endeavors, the precise micro-interaction mechanism occurring at the interface of weathered asphalt, reclaimed asphalt, and aggregates still eludes our understanding. This study leveraged molecular dynamics simulation technology to scrutinize the inherent behavior of aged asphalt and recycled asphalt at the micro-scale, elucidating the intricate interaction mechanism occurring at the interface of recycled asphalt, aged asphalt, and aggregates. The diffusion and adhesion properties of three distinct asphalt–aggregate interfaces were meticulously compared and comprehensively analyzed using advanced molecular dynamics simulation techniques. The findings revealed a substantial decline in the performance of aged asphalt, while the diffusion and adhesion properties of recycled asphalt were observed to be largely restored, reaching a remarkable level of approximately 85% in comparison to aged asphalt. The high-temperature performance, low-temperature performance, and water stability characteristics of both aged the asphalt mixture and recycled asphalt mixture were thoroughly investigated through rigorous laboratory testing of the asphalt mixtures. Based on the experimental findings, it was observed that the overall performance of the aged asphalt mixture exhibited a reduction of approximately 40%. However, through the process of regeneration, the overall performance of the asphalt mixture could be restored to approximately 90% of its non-aged counterpart.

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Short-term aging resistance investigations of polymers and polyphosphoric acid modified asphalt binders under RTFOT aging process

Cited by 36 publications

References 12 publications

Study on the high-temperature and aging properties of agricultural waste-modified asphalt based on rheology

Study on the high-temperature and aging properties of agricultural waste-modified asphalt based on rheology

Multiscale Evaluation of Asphalt Aging Behaviour: A Review

A Study on the Microscopic Properties of the Oil–Stone Interfacial Phase of a Reclaimed Asphalt Mixture Based on Molecular Dynamics Simulation

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