Effect of Graphene Oxide on the Low-Temperature Crack Resistance of Polyurethane–SBS-Modified Asphalt and Asphalt Mixtures

Li, Shuai; Xu, Wenyuan; Zhang, Fengfa; He, Weijun; Zhao, Pengchao

doi:10.3390/polym14030453

Cited by 30 publications

(9 citation statements)

References 29 publications

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“…GO was a two-dimensional and lamellar nanometer carbon material with a high specific surface area and large functional groups (Lin et al, 2019;Sali et al, 2019;Hu et al, 2021). There were many polar functional groups on the two-dimensional surface of GO, such as hydroxyl, carbonyl, carboxyl, and epoxy functional groups (Joshi et al, 2021;Li et al, 2022).…”

Section: Interaction Of Go and Wevamentioning

confidence: 99%

“…The WEVA particles suspended in the modified asphalt system became smaller and more even, along with the increased content of GO in Figure 2. As there is no improvement in GO-modified asphalt, the progress of composite asphalt modified by GO and WEVA comes from the effect of GO on WEVA particles (Li et al, 2022). Based on the mentioned changes in physical properties of modified asphalt, the respective characteristics of modifier, and their effect on the modification, we conducted the schematic (Figure 5) to clarify the interaction of GO and WEVA in the asphalt modification.…”

Section: Interaction Of Go and Wevamentioning

confidence: 99%

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Modification of Asphalt Modified by Packaging Waste EVA and Graphene Oxide

et al. 2022

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A composite modifier made from waste ethylene-vinyl acetate copolymer (WEVA) and graphene oxide (GO) is used to modify asphalt used to pave the roadway. At the same time, the effect of GO on the related properties of modified composite asphalt is investigated in terms of softening point, penetration, ductility, as well as distribution. The preparation of the composite modifier can reduce the modification’s complexity and enhance the modifier’s dispersion in the asphalt system in the storage phase. By increasing WEVA and GO contents, the softening point of modified composite asphalt increases, and both the penetration and ductility decrease. It is proved that the high-temperature performance of composite asphalt modified by WEVA and GO is better than that of modified asphalt with WEVA. The distribution characteristics of modified asphalt on a fluorescence microscope show that by adding more GO, we get a more even and smaller “bee structure” asphalt system. It indicates that GO can promote dispersion and stop the aggregation of WEVA. The FTIR spectrum results show that the composite modification by adding WEVA and GO is a physical modification, indicating GO can physically prevent the aggregation of the polymers in the storage phase. We present a schematic of the effect on GO and WEVA in asphalt modification to show the improvement in the distribution of the asphalt system from GO. In all, this study provides an idea for the preparation of modified composite asphalt and the application of nano-materials.

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Section: Interaction Of Go and Wevamentioning

confidence: 99%

Section: Interaction Of Go and Wevamentioning

confidence: 99%

Modification of Asphalt Modified by Packaging Waste EVA and Graphene Oxide

et al. 2022

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“…Jang et al have demonstrated that GO has the potential to enhance the thermal, mechanical, conductive, and rheological properties of poly(methyl methacrylate). GO is also anticipated to yield significant improvements in asphalt binders, enhancing their performance and addressing issues such as rutting, , fatigue, , and thermal cracking. , Additionally, some researchers have proposed that GO could serve as an antiaging material. For example, Adnan et al conducted an analysis of the influence of GO on the properties of asphalt binder.…”

Section: Introductionmentioning

confidence: 99%

Improved Oxidation of Graphite and Graphene Nanoplatelets: Application to the Modification of Asphalt Binder

Sengottuvelu,

Almashaqbeh,

Majdoub

et al. 2024

ACS Appl. Nano Mater.

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Graphene oxide (GO) and its derivatives find application in fields such as biomedicine, electronics, energy, and the environment. They also play a significant role in the modification of infrastructure materials, such as asphalt and cement. In this study, we oxidized commercially available graphite (Gr) powder and graphene nanoplatelets (GNPs) using an improved Hummers' method. We first investigated the effects of particle sizes and specific surface areas of the Gr and GNP precursors on their oxidation, which have not been addressed in literature. The results from Fourier transform infrared and X-ray photoelectron spectroscopy analyses show that oxidized Gr (designated ox-Gr or simply GO) with a large surface area and small particle size has a higher degree of oxidation than that of oxidized GNPs (designated oxidized multilayer graphene) with about 9.8% carboxyl functional groups that provide favorable interactions with asphalt binder components. Next, we investigated the effect of this carboxyl-rich GO on the high-temperature performance of the asphalt binder through rotational viscosity, rheology, multiple stress creep and recovery (MSCR), and antiaging property measurements. Our results indicate that the introduction of only 2 wt % GO to a performance-grade asphalt binder (PG 67−22) can dramatically increase its complex shear modulus (G*), as well as decrease the phase angle (δ), at high temperatures. The MSCR tests show that the addition of GO to the asphalt binder effectively mitigates its permanent deformation and improves its elastic response, as demonstrated by a reduction of about 39% in the creep compliance (J nr ) and an impressive 297% increase in the percent recovery (εR) of the GO-modified binder. Furthermore, the measured viscosity aging index and G* ratio of the GOmodified asphalt binder confirm the significant effect of GO on the improvement of the antiaging properties of the binder.

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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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Effect of Graphene Oxide on the Low-Temperature Crack Resistance of Polyurethane–SBS-Modified Asphalt and Asphalt Mixtures

Cited by 30 publications

References 29 publications

Modification of Asphalt Modified by Packaging Waste EVA and Graphene Oxide

Modification of Asphalt Modified by Packaging Waste EVA and Graphene Oxide

Improved Oxidation of Graphite and Graphene Nanoplatelets: Application to the Modification of Asphalt Binder

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

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