Rheological and Molecular Characterizations of Tire Rubber Modified Asphalt Emulsion

Sarkar, Tanvir Ahmed; Rahman, Md. Nafiur; Elseifi, Mostafa A.; Mayeux, Corey; Cooper, Samuel B.

doi:10.1177/0361198120908871

Cited by 17 publications

(3 citation statements)

References 20 publications

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“…Liu et al and Yu et al demonstrated that the dynamic modulus of asphalt emulisons was enhanced by the addition of waterborne epoxy resin and nanoscale polyurethane [8,9]. Sarkar et al found that the rutting indexes of tire-rubber modified asphalt emulsions is higher than that of unmodified asphalt emulsions [10]. Shirkavand et al found that the G' and G'' of Zhang et al J Infrastruct Preserv Resil (2021) 2:22 asphalt emulsions increase with the addition of nanoclay [11].…”

Section: Introductionmentioning

confidence: 99%

Investigation of rheological properties of asphalt emulsions

Zhang

Shan

et al. 2021

J Infrastruct Preserv Resil

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Rheology is critical issue in the workability, stabilization and engineering performance of asphalt emulsions. The objective of this study is to investigate the rheological properties of asphalt emulsions. To achieve this goal, a preshear protocol was introduced and four kinds of asphalt emulsions were tested base on preshear. Firstly, the necessarity of preshear was analyzed and the suitable range of preshear rate and preshear time of the studied asphalt emulsions were given. Then, the rheological properties of asphalt emulsions were studied after preshear. Finally, the palierne model was modified and the storage/loss modulus of asphalt emulsions was accurately predicted by the modified palierne model. The results showed that it’s necessary to preshear asphalt emulsions before testing rheological properties. The viscosity, zero shear viscosity, storage and loss modulus of asphalt emulsions increase with the increase in solid content. The prediction results of the modified palierne model are better than that of palierne model. The storage/loss modulus of asphalt emulsions can be effectively predicted by the modified palierne model. This study has considerable meaning to the promotion of production and manufacturing of asphalt emulsions.

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Section: Introductionmentioning

confidence: 99%

Investigation of rheological properties of asphalt emulsions

Zhang

Shan

et al. 2021

J Infrastruct Preserv Resil

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“…El BBS es una prueba selectiva ya que determina la adhesión mecánica de los materiales ensayados según sus propiedades mecánicas y reológicas, y según la sensibilidad que posea el material a la tracción uniaxial y a la humedad. El BBS tiene la capacidad de diferenciar entre la susceptibilidad a la humedad en diferentes muestras de ligantes asfálticos con diversas propiedades f ísicas y químicas (Sarkar, Rahman, Elseifi, Mayeux, y Cooper, 2020).…”

Section: Introductionunclassified

Mejoras al ensayo de resistencia del enlace adhesivo de ligante asfáltico en materiales para pavimentos

Tencio

Baldi²,

Moya

et al. 2021

Infraestructura Vial

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El estudio de las propiedades mecánicas de los materiales usados en pavimentos forma parte esencial de su caracterización inicial. Por ello, la reproducibilidad y la constante mejora de ensayos permite obtener resultados confiables, reduciendo errores que se puedan dar durante la preparación del material. Es por esto que el presente estudio permite establecer criterios y valores nominales para un adecuado acabado del agregado usado en pavimentos, con el fin de reducir la desviación de los resultados del ensayo de tracción uniaxial en base seca, realizados con ligante asfáltico virgen. Para el ensayo, se expuso a las muestras de agregado a un proceso de pulido por 60 segundos con un número de 10 pasadas, para lo cual se utilizaron bandas abrasivas de distintos números de grano, hasta el #320. Se pudo obtener un esfuerzo de tracción de 2,39 (0,29) MPa, donde el valor entre paréntesis corresponde a la desviación estándar y el mismo corresponde a las condiciones donde se obtuvo un mejor esfuerzo de tracción, aunado a una disminución de desviación estándar. Adicionalmente, un modelo lineal entre los factores de preparación de superficie y el valor de resistencia de enlace adhesivo (POTS por sus siglas en inglés) obtenido por un diseño factorial 24, mostró que los efectos principales aportan hasta un 84 % de correlación con el esfuerzo de tracción y hasta un 78 % con su desviación estándar, lo cual es considerado satisfactorio, ya que su valor p, el cual es una medida directa de la probabilidad de aceptar las condiciones recomendadas en este documento, es de 6,56·10-4, demostrando una adecuada significancia estadística.

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“…Tire rubber-modified asphalt emulsion had better aging resistance than the conventional and polymer-modified asphalt emulsion. The rheological and moisture stability of tire rubber-modified asphalt emulsion had comparable or 2 of 16 better performance [11]. The microstructure and the dispersion of the polymer in the emulsified asphalt could be evaluated with confocal microscopy, with the influence of different polymer addition methods being assessed.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Evaluation of the Residue of Rubber-Modified Emulsified Asphalt

Zhou

Chen

et al. 2020

Sustainability

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Emulsified asphalt has been widely used in various surface treatment methods such as chip seal for low-volume road preservation. Using modified emulsified asphalt made it possible to use chip seal technology on medium- and even high-volume traffic pavements. The main objective of the study is to quantify the residue characteristics of rubber-modified emulsified asphalt and to assess the effectiveness of using crumb rubber to modify emulsified asphalt binder. The four emulsified asphalt residues used the distillation procedure. Then, the rheology characteristics of emulsified asphalt residue were evaluated. The Fourier transform infrared spectroscopy (FTIR) test analyzed the chemical change of emulsified asphalt during the aging procedure. The results indicate that the evaporation method cannot remove all the water in emulsified asphalt. The mass change during the rolling thin film oven (RTFO) process only represented the component change of emulsified asphalt binder residue. Both the high-temperature and low-temperature performance grade of the two emulsified asphalt binders with rubber were lower. The original asphalt binder adopted to emulsification had a crucial influence on the performance of emulsified asphalt. The rubber modification enhanced the property of the emulsified asphalt binder at low temperatures, and the improvement effect was enhanced as the rubber content in the emulsified asphalt was raised. The C=O band was more effective in quantifying the aging condition of the residue. The findings of this study may further advance the emulsified asphalt technology in pavement construction and maintenance.

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Rheological and Molecular Characterizations of Tire Rubber Modified Asphalt Emulsion

Cited by 17 publications

References 20 publications

Investigation of rheological properties of asphalt emulsions

Investigation of rheological properties of asphalt emulsions

Mejoras al ensayo de resistencia del enlace adhesivo de ligante asfáltico en materiales para pavimentos

Laboratory Evaluation of the Residue of Rubber-Modified Emulsified Asphalt

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