Graphene Oxide-Modified Epoxy Asphalt Bond Coats with Enhanced Bonding Properties

Zhang, Junsheng; Wang, Rui; Zhao, Ruikang; Fan, Jing; Li, Chenxuan; Wang, Qingjun; Xie, Hongfeng

doi:10.3390/ma15196846

Cited by 12 publications

(5 citation statements)

References 51 publications

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“…Similar to GNPs, other nanofillers, such as GO, MMT and ATT, also extend the allowable construction time of the neat EABC [ 35 , 47 , 48 ]. Table 4 summarizes the time to 5000 mPa·s of GNP-reinforced EABCs at 120 °C.…”

Section: Resultsmentioning

confidence: 99%

“…When used as a bonding layer in the OSD system, the epoxy asphalt bond coat (EABC) needs to have high bonding and mechanical strengths. To improve these properties, nanoclays, such as montmorillonite (MMT) and attapulgite (ATT), and GO have been introduced into EABC [ 35 , 36 ]. Although GNPs have been utilized to reinforce both epoxy and asphalt [ 37 , 38 , 39 , 40 , 41 ], as well as epoxy asphalt binders [ 42 , 43 ], less attention has been paid to GNP-reinforced EABCs.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of Bonding and Mechanical Performance of Epoxy Asphalt Bond Coats with Graphene Nanoplatelets

et al. 2023

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Improving bonding and mechanical strengths is important for the application of bond coats used in the construction of steel deck bridges. Graphene nanoplatelets (GNPs) are attractive nanofillers for polymer modification because of their low cost, ultra-high aspect ratio, and extraordinary thermal and mechanical performance. In this paper, GNPs were used to reinforce the epoxy asphalt bond coat (EABC). The morphology, viscosity–time behavior, contact angle, dynamic mechanical properties, and mechanical and bonding strengths of GNP-reinforced EABCs were investigated using laser confocal microscopy, a Brookfield rotational viscometer, a contact angle meter, dynamic mechanical analysis, a universal test machine, and single-lap shear and pull-off adhesion tests. GNP dispersed non-uniformly in the asphalt phase of EABC. The viscosity of the neat EABC was lowered with the inclusion of GNPs and thus the allowable construction time was extended. The existence of GNPs enhances the hydrophobicity of the neat EABC. When adding more than 0.2% GNP, the storage modulus, crosslinking density and glass transition temperatures of both asphalt and epoxy of the neat EABC increased. The mechanical and bonding properties of the neat EABC were greatly enhanced with the incorporation of GNPs. Furthermore, the mechanical and bonding strengths of the modified EABCs increased with the GNP content. GNP-reinforced EABCs can be utilized in the pavement of long-span steel bridges with long durability.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancement of Bonding and Mechanical Performance of Epoxy Asphalt Bond Coats with Graphene Nanoplatelets

et al. 2023

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“…It needs to be mentioned that asphalt- or polymer-modified asphalt in epoxy asphalt or epoxy polymer-modified asphalt rearranges during the formation of phase-separated microstructures [ 31 , 67 , 68 , 69 ]. Figure 10 presents transmission confocal microscopy images of the unmodified asphalt rubber binder and the modified one with 12% WCO.…”

Section: Resultsmentioning

confidence: 99%

Waste Cooking Oil-Modified Epoxy Asphalt Rubber Binders with Improved Compatibility and Extended Allowable Construction Time

et al. 2022

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The application of crumb rubber from end-of-life tires and waste cooking oil (WCO) in road pavements is of significant importance from an economic and environmental viewpoint. However, the incorporation of crumb rubber greatly shortens the allowable construction time of epoxy asphalt binders due to the high viscosity of the epoxy asphalt rubber (EAR) binder and poor compatibility between crumb rubber and asphalt binder. To lower the viscosity of asphalt rubber, extend the allowable construction time and improve the compatibility of EAR binder, waste cooking oil (WCO) was introduced. The effect of WCO on the viscosity–time behavior, thermal stability, dynamic modulus, glass transitions, crosslink density, damping ability, compatibility, mechanical properties and phase separation of WCO-modified EAR binders was investigated by using the Brookfield viscometer, thermogravimetric analysis, dynamic mechanical analysis, universal testing machine and laser confocal microscopy. The test results demonstrated that the incorporation of WCO declined the viscosity and extended the allowable construction time of the unmodified EAR binder. The inclusion of WCO improved the compatibility between asphalt and crumb rubber and the damping ability and elongation at the break of the unmodified EAR binder. The presence of WCO had a marginal effect on the thermal stability of the unmodified EAR binder. Confocal microscopy observation revealed that asphalt rubber particles aggregated in the epoxy phase of the unmodified EAR binder. With the inclusion of WCO, co-continuous asphalt rubber particles became more spherical.

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“…The results showed that the bonding strength, especially at 60 C, was enhanced with the incorporation of GO, and the tensile strength and elongation at break of the modified EABCs increased with the GO loading. [22] Based on the above research, GO showed enormous potential on improving the performances of WEA. Nevertheless, it should be noted that CEA's physical and chemical composition is distinct from that of WEA and HEA.…”

Section: Introductionmentioning

confidence: 98%

“…The results showed that the bonding strength, especially at 60 °C, was enhanced with the incorporation of GO, and the tensile strength and elongation at break of the modified EABCs increased with the GO loading. [ 22 ]…”

Section: Introductionmentioning

confidence: 99%

Exploiting graphene oxide as a potential additive to improve the performance of cold‐mixed epoxy asphalt binder

Shao

Li³

et al. 2023

Vinyl Additive Technology

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As a green material for high‐performance paving, cold‐mixed epoxy asphalt (CEA) should be improved in compatibility, mechanical performance, and thermal stability. This work is going to estimate the potential of graphene oxide (GO) as an additive for preparing GO/CEA composites with different GO content from 0 to 0.2 wt%. The influences of GO on the structure and performances of CEA were evaluated by Fourier transform‐infrared spectrum, fluorescence microscopy, viscosity, thermogravimetric analysis, tensile test, and dynamic mechanical analysis. Results showed that the functional groups on GO reacted with CEA and improved the compatibility of epoxy resin and asphalt. The viscosity of the GO/CEA composites increased slightly and the pot life decreased significantly, with GO loading increasing. The cured GO/CEA composite with 0.1 wt% GO had the best heat resistance and showed a gentle thermal decomposition. GO improved the toughness of the cured CEA and had a certain weakening effect on its strength. The introduction of GO lowered the glass transition temperature of the cured CEA from 51.4 to 47.1 °C and decreased its storage modulus. The preliminary exploration of this study shows that the modification of GO for CEA is feasible, and it is expected to prolong the service life of CEA.

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Graphene Oxide-Modified Epoxy Asphalt Bond Coats with Enhanced Bonding Properties

Cited by 12 publications

References 51 publications

Enhancement of Bonding and Mechanical Performance of Epoxy Asphalt Bond Coats with Graphene Nanoplatelets

Enhancement of Bonding and Mechanical Performance of Epoxy Asphalt Bond Coats with Graphene Nanoplatelets

Waste Cooking Oil-Modified Epoxy Asphalt Rubber Binders with Improved Compatibility and Extended Allowable Construction Time

Exploiting graphene oxide as a potential additive to improve the performance of cold‐mixed epoxy asphalt binder

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