Effect of Graphene Oxide on Aging Properties of Polyurethane-SBS Modified Asphalt and Asphalt Mixture

Li, Shuai; Xu, Wenyuan; Zhang, Fengfa; He, Weijun; Ge, Qixin

doi:10.3390/polym14173496

Cited by 13 publications

(5 citation statements)

References 35 publications

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“…Meanwhile, the δ master curves exhibit significant fluctuations and plateaus ranging from 10 −3 to 10 0 Hz. This behavior suggests the occurrence of a phase transition in this frequency zone, providing evidence for the formation of a crosslinking grid structure between PUP and asphalt [ 47 , 48 ]. It is worth noting that a higher G * and a lower δ imply less energy loss under repeated loads.…”

Section: Resultsmentioning

confidence: 99%

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Feasibility Analysis of Polyurethane-Prepolymer-Modified Bitumen Used for Fully Reclaimed Asphalt Pavement (FRAP)

Sun,

Wang,

Sun

et al. 2023

Materials

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Asphalt pavement recycling technology with high reclaimed asphalt pavement (RAP) content has always been limited by unsatisfactory pavement performance and the rising cost of pavement materials. To address these challenges, polyurethane-prepolymer-modified bitumen (PPB) was proposed to be utilized as the asphalt binder of fully reclaimed asphalt pavement (FRAP) in this study. The proper formula of the PPB binder was determined based on a range of tests. The rheological behavior and tensile properties of the PPB binder were then investigated, and the economic cost of materials was discussed as well. Results revealed that the PPB system can be obtained through chemical synthesis using readily available raw materials. The reaction of polyurethane prepolymer and chain extender provides PPB with significant improvement in temperature susceptibility, rutting resistance, and tensile properties. It is also demonstrated in this study that the PPB mixture containing 100% RAP, on the whole, takes advantage of cost-saving especially compared to the epoxy asphalt mixture. Therefore, the PPB binder exhibits a favorable application prospect in FRAP.

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Section: Resultsmentioning

confidence: 99%

“…of a crosslinking grid structure between PUP and asphalt [47,48]. It is worth noting that a higher G * and a lower δ imply less energy loss under repeated loads.…”

Section: Frequency Sweep Test Resultsmentioning

confidence: 99%

Feasibility Analysis of Polyurethane-Prepolymer-Modified Bitumen Used for Fully Reclaimed Asphalt Pavement (FRAP)

Sun,

Wang,

Sun

et al. 2023

Materials

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“…Additionally, a few studies have reported on the enhancement effect of GO on the performance of SBS-MA. As a reinforcing agent, GO can remarkably improve the aging resistance of asphalt mixtures, owing to its ability to reduce the degradation of SBS modifiers and change the crosslinked composite structure of asphalt [ 23 , 24 ]. Favourable high-temperature rheological properties were also obtained for the asphalt binder by doping SBS with GO to form a composite modifier [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Aging on Microstructures and Rheological Properties of Modified Asphalt with GO/SBS Composite

Xie,

Jia,

Liu

et al. 2024

Polymers

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This work aimed to investigate the effects of aging on the microstructures and rheological properties of modified asphalt with a GO/SBS composite, since the styrene–butadiene–styrene block copolymer is potentially compatible with graphene oxide (GO). The GO/SBS composites, which were used as a kind of modifier, were prepared via the solution-blending method. GO/SBS composites with varying GO contents were employed to prepare the GO/SBS-compound-modified asphalt (GO/SBS-MA). Then, the GO/SBS-MA underwent PAV (pressure aging vessel) or UV (ultraviolet) aging tests to simulate different aging circumstances. The microstructures of the asphalt binders were studied using FTIR (Fourier-transform infrared spectroscopy) and AFM (atomic force microscope) tests. Moreover, DSR (dynamic shear rheometer) and BBR (bending beam rheometer) experiments were carried out to investigate the rheological properties of the GO/SBS-MA. The results showed that the addition of GO improved the high-temperature stability of the asphalt binder while slightly impairing its performance at low temperatures. GO restrained the formation of carbonyl and sulfoxide groups as well as the breakdown of C=C bonds in the polybutadiene (PB) segment, promoting the anti-aging performance of GO/SBS-MA. Furthermore, the interactions between the GO/SBS and the asphalt binder resulted in the formation of needle-like aggregates, enhancing the stability of the asphalt binder. The asphalt binders with a higher content of graphene oxide (GO) exhibited not only a better high-temperature performance, but also a better aging resistance. It was concluded that the macroscopic properties and microstructures were significantly affected by GO, and a moderate increase in the amount of GO could contribute to a better aging resistance for GO/SBS-MA.

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“…Some scholars have studied the modifed asphalt with the hindered amine light stabilizer GW-944 [22]. Te study found that the additive could hardly afect the thermal and fatigue performance of asphalt after UV ageing treatment, but it can achieve the improvement of the low-temperature property of asphalt materials [22,23]. Te study also found that the additive should not be incorporated into the base asphalt, and the test results suggested that the UV ageing resistance modifer should be used into SBS-and SBR-modifed asphalt [22,23].…”

Section: Introductionmentioning

confidence: 99%

Rheological Properties and Microscopic Characterization of Delayed Decay-Modified Asphalt Based on UV Ageing

Zhu²,

Zhu

et al. 2023

Advances in Materials Science and Engineering

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For clarifying the applying feasibility of hindered amine light stabilizers in asphalt binder, two types of hindered amine light stabilizers were chosen as a UV ageing resistance modifier and the modified asphalt was prepared with a selected UV ageing resistance modifier. The ultraviolet aging testing method of asphalt materials was proposed for UV ageing behavior characterization. Under the condition of different frequencies, the impact of UV ageing resistance modifier on asphalt was investigated through using the frequency sweep test of DSR. Under the effect of ultraviolet aging, the variation of thermal properties of UV ageing resistance-modified asphalt was deeply analyzed by means of a temperature scanning test of DSR following the increase of temperature. The change law of the surface morphology of light stabilizer-modified asphalt was characterized by atomic force microscopy (AFM) dynamically with the UV aging time extension. The research results showed that the hindered amine light stabilizer could improve the high temperature performance of asphalt and achieve the UV aging behavior of asphalt materials effectively. Meanwhile, the corresponding reaction mechanism was explored at the microscopic level.

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Effect of Graphene Oxide on Aging Properties of Polyurethane-SBS Modified Asphalt and Asphalt Mixture

Cited by 13 publications

References 35 publications

Feasibility Analysis of Polyurethane-Prepolymer-Modified Bitumen Used for Fully Reclaimed Asphalt Pavement (FRAP)

Feasibility Analysis of Polyurethane-Prepolymer-Modified Bitumen Used for Fully Reclaimed Asphalt Pavement (FRAP)

The Effects of Aging on Microstructures and Rheological Properties of Modified Asphalt with GO/SBS Composite

Rheological Properties and Microscopic Characterization of Delayed Decay-Modified Asphalt Based on UV Ageing

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