Investigating the performance, chemical, and microstructure properties of carbon nanotube-modified asphalt binder

Gong, Minghui; Yang, Jun; Yao, Hongmiao; Wang, Meng; Niu, Xiaowei; Haddock, John E.

doi:10.1080/14680629.2017.1323661

Cited by 68 publications

(28 citation statements)

References 33 publications

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“…Various studies [34,36,40] have indicated that using CNT as an asphalt binder modifier enhanced the softening point and penetration index and decreased penetration of asphalt binder compared to the unmodified one; however, there have been limited studies on the effect of CNF on the penetration index of modified asphalt binder.…”

Section: Measurement Of the Sfe Componentsmentioning

confidence: 99%

“…Research studies on using CNF can present a beneficial guide for studying CNT mixing in aggregates because of the resemblance of CNT and CNF. However, CNT presents a higher surface-area-to-volume ratio and aspect ratio [33,34]. Briefly, the goals of this research are conducting a classical asphalt binder test to explore the physical properties of modified asphalt binder, investigating the moisture performance of asphalt mixtures by the ITS test, and evaluating the influence of CNF as an asphalt binder modifier and CNT as an aggregate modifier on the behavior of mixtures to moisture using SFE concept.…”

Section: Introductionmentioning

confidence: 99%

“…Park et al [37] indicated that the ITS amount of 0.5% and 1% carbon fiber was less than the base sample, but 1.5% carbon fiber had a higher ITS compared to the base sample. Gong et al [34] showed that CNT increased the softening point and reduced the penetration of asphalt binder. Saltan et al [38] in their research showed that using CNT enhanced the asphalt performance in moisture sensitivity.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Nikookar

Movahhed

Ayoubinejad

et al. 2021

Advances in Civil Engineering

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Moisture sensitivity of asphalt mixtures may cause damage due to cohesion in asphalt binder membrane and adhesion between aggregate and asphalt binder that result in considerable damage to the pavements. Therefore, by determining the adhesion quality in a modified aggregate-asphalt binder system, one can choose the suitable material compositions to decrease the moisture sensitivity of mixtures. In this study, the effects of modified asphalt binder with carbon nanofiber and modified aggregates with carbon nanotube on the moisture sensitivity of asphalt mixtures were simultaneously explored. For investigating the moisture sensitivity, the indirect tensile strength test and surface free energy concept were implemented. The results of the indirect tensile strength test revealed that modification of asphalt binder and aggregates with carbon nanofiber and carbon nanotube, respectively, increased the indirect tensile strength and tensile strength ratio values of mixtures. The results of surface free energy indicated that using carbon nanofiber and carbon nanotube enhanced the adhesion free energy of the aggregate-asphalt binder system. Moreover, utilizing carbon nanofiber to modify asphalt binder enhanced the cohesion free energy values in the asphalt binder membrane. Also, carbon nanofiber and carbon nanotube brought detachment energy of the system toward zero, indicating less desire for the mixtures to be stripped. Generally, investigations performed by the two methods showed that covering aggregates by carbon nanotube as well as utilizing carbon nanofiber as an asphalt binder modifier had a positive impact on decreasing moisture sensitivity of asphalt mixtures.

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Section: Measurement Of the Sfe Componentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Nikookar

Movahhed

Ayoubinejad

et al. 2021

Advances in Civil Engineering

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“…Last but not least, parts of CNT were distributed on the interface between PE phase and asphalt for the two types of CNT/PE modified asphalt, which reinforce the adhesion of interface. The researcher also reported the pull-out behavior of CNT or nano-fibers in polymer modified asphalt [33][34][35] and they believed the reinforcement effect of CNT attribute to pull-out behaviors. Therefore, the reinforcement of CNT to the interface accounts for the improved bonding behavior of the resulting binder.…”

Section: Micro-morphologymentioning

confidence: 99%

Investigating the Rheological Properties of Carbon Nanotubes/Polymer Composites Modified Asphalt

Liang

et al. 2020

Materials

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The utilization of nanomaterials in the field of binder materials for road paving has attracted researchers’ attention in recent years. This study presented the performance properties of a binder modified with carbon nanotubes (CNT) and polyethylene (PE). The rheological properties, adhesion behavior, morphology, and storage stability of the modified asphalt were investigated. Experimental analysis indicated a positive effect of CNT/PE composites on the performance of the binder. The results indicate that the combined use of CNT and PE shows a significant enhancement on complex modulus, viscosity, and creep recovery of the binder at high temperatures and a great decrease in compliance, indicating great resistance to permanent deformation. Meanwhile, only using CNT to improve the high temperature performance of the binder is limited due to high shear mixing. CNT/PE modifiers enhance the cracking resistance at low temperatures and moisture damage resistance. The CNT/PE melt mixing composites endow asphalt with stronger cracking resistance, better resistance to moisture damage and workability. Asphalt with CNT/PE composites formed an even dispersion system. Notably, CNT bridges on the interface between PE phase and asphalt for the two modified asphalts, which reinforces the cohesion of interface. Asphalt with CNT/PE composites showed improved storage stability in comparison with PE modified asphalt.

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“…One common type of such materials is carbon nanotubes (CNTs). It was shown that the addition of CNTs could reduce fatigue and permanent deformation of asphalt mixtures, enhance the resistance to thermal cracking, and reduce aging [5][6][7]. However, the high cost of CNTs (which may be in the order of magnitude of 100 €/kg) makes them unsuitable for large-scale application to asphalt pavements.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Graphite Nanoplatelets Influence on the Lubrication Properties of Asphalt Binders

et al. 2020

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With the major advance in nanotechnology, there has been an emerging interest in applying nanoscale materials to asphalt pavement materials. Among them, considerable interest has been directed to carbon-based nanomaterials, such as carbon nanotubes (CNTs) and graphite nanoplatelets (GNPs). Recent studies have proven that the addition of small percentages of GNPs could significantly reduce the compaction effort required to densify HMA. Viscosity measurements showed, however, that the addition of GNPs increased the viscosity of the binder. This observation pointed towards the presence of a different mechanism responsible for the reduction of compaction effort. A new test method used for lubricants and based on tribology has been recently proposed in order to characterize the lubricating behaviour of asphalt binders. In this study, the tribological characterization of an asphalt binder modified with GNPs was performed. A novel approach in which aggregate surface microtexture was simulated using rough surfaces of the testing fixtures, shows that indeed, the addition of GNPs lowers the friction coefficient and therefore, enhances the lubrication properties of the binder when mixed with mineral aggregates.

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Investigating the performance, chemical, and microstructure properties of carbon nanotube-modified asphalt binder

Cited by 68 publications

References 33 publications

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Improving the Moisture Sensitivity of Asphalt Mixtures by Simultaneous Modification of Asphalt Binder and Aggregates with Carbon Nanofiber and Carbon Nanotube

Investigating the Rheological Properties of Carbon Nanotubes/Polymer Composites Modified Asphalt

Evaluation of Graphite Nanoplatelets Influence on the Lubrication Properties of Asphalt Binders

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