Characterization of CNTs-modified HMA’s mechanical properties

Arabani, Mahyar; Faramarzi, Masoud

doi:10.1016/j.conbuildmat.2015.03.035

Cited by 87 publications

(24 citation statements)

References 13 publications

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“…Positive effects of modifying AC with well-known nanomaterials such as carbon nanotubes (CNT), nanoclay and nanosilica have been reported in numerous studies (29)(30)(31). Arabani et al, (32) and Ziari et al (33) conducted research on CNT-modified asphalt binders and mixtures and concluded that the CNT modifiers enhanced the mechanical properties and also improved the aging resistance and self-healing mechanism of binders and hot mix asphalt (HMA). According to to Crucho et al, (4) and You et al, (34), nanoclay modified binders enhance the stiffness and elasticity of AC; however, due to the limited enhancement in the elastic behavior of AC, nanoclay is more frequently used as a second modifier to polymer modified AC.…”

Section: Introductionmentioning

confidence: 99%

The High Temperature Performance Evaluation of Polymer/Nanocomposite Modified Asphalt Cement

2022

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The current study focuses on the effect of Acrylate-styrene-acrylonitrile (ASA)/Nanosilica (Si) modified binders on the complex modulus (G*) and rutting resistance parameters (G*/ sinδ) of Asphalt Cement (AC). Four different blends including the base binder and the polymer nanocomposites which were formed by blending 5% ASA to base binder with the addition of nanosilica at 3, 5 and 7% by the weight were the subject of investigations. Conventional and Dynamic Shear Rheometer (DSR) testing procedures were conducted as well as morphology analysis using Fourier Transform Infrared Spectroscopy (FT-IR). The rheological characteristics of AC were analysed by master curves, isochronal plots and rutting resistance parameter plots. Test results revealed that G* and G*/ sinδ of all modified samples were significantly enhanced compared to the base binder. Multiple Stress Creep Recovery Test (MSCRT) conducted at 100 Pa and 3200 Pa showed that, non-recoverable compliance was reduced and elastic recovery of modified binders were improved. Optimum concentration was found to be 5% ASA/Si composite, as further addition of polymer nanocomposite resulted in lower enhancement in the rheological properties of modified AC due to the occurrence of agglomeration between the composite and the base binder.

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Section: Introductionmentioning

confidence: 99%

The High Temperature Performance Evaluation of Polymer/Nanocomposite Modified Asphalt Cement

2022

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“…e results indicated that nanoclay had considerably positive impact on rutting and elastic deformation of neat and SBRmodified asphalt binder and mixture. Arabani and Faramarzi [16] investigated mechanical properties of CNTmodified asphalt mixtures and found that the permanent deformations of CNT-modified asphalt mixtures reduced.…”

Section: Introductionmentioning

confidence: 99%

A Compressive Review on High‐ and Low‐Temperature Performance of Asphalt Modified with Nanomodifier

Yang

Lin

et al. 2021

Advances in Materials Science and Engineering

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At present, rutting and cracking have become serious issues in asphalt pavement, especially in the areas of summer heat and winter cold. Nanomodifier has been widely used in recent years due to its unique properties in improving the characteristics of asphalt binders. To make better use of nanomodifier to solve the problem of rutting and cracking of pavement, a compressive review on the high- and low-temperature performance of nanomodified asphalt is performed. The results indicate that for high- and low-temperature performance of asphalt binder, the effectiveness of nanomodification is found to be strictly influenced by the combination of original asphalt type, nanomodifier type, nanomodifier dosage, nanoparticle size, and preparation of nanomodified asphalt, and the high-temperature antirutting performance and low-temperature crack resistance of final blends are various with the combination. Chemical composition, microstructure, dispersion, and compatibility of final blends were the possible reason causing the difference. The rational selection of the combination can improve the high-temperature rutting resistance and the low-temperature cracking resistance of asphalt binder. So far, there is a lack of systematic investigation in this regard. Therefore, it is very necessary to study systematically the original asphalt, nanomodifier, nanomodifier dosage, nanoparticle size, and preparation of nanomodified asphalt effect on the high and low performance of nanomodified asphalt, especially in the modification mechanism in the future.

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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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Characterization of CNTs-modified HMA’s mechanical properties

Cited by 87 publications

References 13 publications

The High Temperature Performance Evaluation of Polymer/Nanocomposite Modified Asphalt Cement

The High Temperature Performance Evaluation of Polymer/Nanocomposite Modified Asphalt Cement

A Compressive Review on High‐ and Low‐Temperature Performance of Asphalt Modified with Nanomodifier

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

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