Development of empirical model for predicting G∗/Sinδ and viscosity value for nanoclay and Carbon Nano Tube modified asphalt binder

Ashish, Prabin Kumar; Singh, Dharamveer

doi:10.1016/j.conbuildmat.2018.01.021

Cited by 27 publications

(4 citation statements)

References 41 publications

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“…At the same time, a higher dosage of hydrogenation is required for the same diffusion coefficient (Figure 7c). Previous studies show that the diffusion coefficient of SARA molecules and asphalt binder on the aggregates are in the range of 0.8-12 × 10 −10 m 2 /s [12,29,30], which is in the same order as our results for a lower dosage of functionalization. Similar to previous studies, we observed that saturate molecule has the highest diffusion coefficient among SARA molecules [30,31].…”

Section: Resultssupporting

confidence: 90%

“…The functionalized atoms such as oxygens change the intrinsic properties of CNTs through change in sp2 atomic structure and improve interfacial adhesion and solubility [2]. In recent years, there has been a great interest in employing CNT-, graphene-, graphene oxide (GO)-and polymer grafted graphene as modifiers to improve fatigue life and performance of asphalt binders [11][12][13][14][15]. A study on the intrinsic healing capacity of GO-modified asphalt binder showed that increasing the dosage of GO improves thermodynamic properties and self-healing capacity of aged binder [15].…”

Section: Introductionmentioning

confidence: 99%

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The Adhesion and Diffusion of Saturate, Asphaltene, Resin and Aromatic (SARA) Molecules on Oxygenated and Hydrogenated Carbon Nanotubes (CNTs)

2021

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The interfacial adhesion between asphalt binder and carbon nanotubes (CNTs) depends on many nanoscopic properties such as diffusion of SARA molecules on CNTs surface. Functionalization of CNTs with Oxygens (O=CNTs), hydroxyl groups (HO–CNTs), and hydrogens (H–CNTs) has been an effective way to modify the surface properties of CNTs and ultimately the macroscopic properties of the CNT-composites. This paper presents the effect of different dosages of oxygenated and hydrogenated CNTs on the adhesion and diffusion of SARA molecules on CNTs’ surfaces. First, reactive molecular dynamics simulation is used to oxygenate and hydrogenate CNTs up to a certain dosage. Next, it is employed to model the interaction and diffusion of SARA molecules with the functionalized CNTs. We employ the steer molecular dynamic (SMD) and Einstein formula to calculate the adhesion and diffusion properties. The results demonstrate that hydrogenation has little effect on the adhesion energy, while oxygenation can increase adhesion energy up to 100% for 25% dosage. The diffusion coefficient dramatically drops for both oxygenated and hydrogenated CNTs, with lower values for the latter. We observe that for hydrogenated and oxygenated CNTs at different dosages, asphaltene, resin, aromatic, and saturate molecules have the highest to lowest values, respectively.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

The Adhesion and Diffusion of Saturate, Asphaltene, Resin and Aromatic (SARA) Molecules on Oxygenated and Hydrogenated Carbon Nanotubes (CNTs)

2021

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“…Clays with nano size (nano-clays) are used more often in order to make modification more effective. In studies carried out with nano-clay, higher rutting resistant parameters were obtained with nano-clay modified bitumens (Baqersad et al, 2019, Ashish andSingh, 2018).…”

Section: Introductionmentioning

confidence: 99%

Potential of using organic additive produced with kaolin-clay in bituminous roadways

Arslan

Gürü²,

Çubuk³

et al. 2022

JER is an international, peer-reviewed journal that publishes f

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Roadway performance can be improved through utilizing modified bitumens and/or modified bituminous mixtures within the structure. Regarding this view, Kaolin-containing-Organic Additive Material (K-c-OAM) has been synthesized chemically in the study. K-c-OAM is a new additive material obtained in laboratory conditions with the reaction of kaolin, a kind of clay, and ethylene glycol. 50/70 penetration grade neat bitumen has been modified by K-c-OAM in concentrations ranging from 1 % to 4 %. The effects of K-c-OAM on both bitumen and bituminous mixture properties have been investigated by experiments including rotational viscosity, penetration, softening point, ductility, Nicholson stripping and Marshall tests. Marshall Stability values of the bituminous mixtures have been found to be increased at a level varying between 6.4 % and 9.5 % by K-c-OAM modified bitumens. In areas where hot climate is not dominant, K-c-OAM modified roadway pavements can said to provide better performance according to the laboratory findings.

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“…Chemical additives have been used to improve the road performance of base asphalt for many decades. The low-temperature cracking property and high-temperature stability of modified asphalt are superior to non-modified asphalt [ 18 , 20 ]. Additionally, application of waste rubber on the road can solve the problem of disposal of used tires and environment issues [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Resistance to Ultraviolet Aging of Nano-SiO2 and Rubber Powder Compound Modified Asphalt

et al. 2020

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Ultraviolet (UV) aging degrades the life span of asphalt pavement, nanomaterials used as modifiers exhibit good shielding function on UV light, but generally degrade the low-temperature property of asphalt, a compound modification was found to be a solution. In this study, nano-SiO2 and rubber powder were blended together with base asphalt to prepare compound modified asphalt. Compound modified asphalt with different blending dosages were subjected to UV light via a self-made UV aging simulation chamber. Basic performance tests and rheological tests were conducted including the UV aging influence. An optimum compound ratio was finally recommended based on the goal to remove the adverse effect of nano-SiO2 on the thermal cracking. Results show that the anti-UV aging property of asphalt is improved obviously due to the blocking function of nano-SiO2 and carbon black in rubber powder, and the enhancing effect of nano-SiO2 is found to be the most significant.

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Development of empirical model for predicting G∗/Sinδ and viscosity value for nanoclay and Carbon Nano Tube modified asphalt binder

Cited by 27 publications

References 41 publications

The Adhesion and Diffusion of Saturate, Asphaltene, Resin and Aromatic (SARA) Molecules on Oxygenated and Hydrogenated Carbon Nanotubes (CNTs)

The Adhesion and Diffusion of Saturate, Asphaltene, Resin and Aromatic (SARA) Molecules on Oxygenated and Hydrogenated Carbon Nanotubes (CNTs)

Potential of using organic additive produced with kaolin-clay in bituminous roadways

Resistance to Ultraviolet Aging of Nano-SiO2 and Rubber Powder Compound Modified Asphalt

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