A study on the effect of rejuvenators in reclaimed asphalt pavement based stone mastic asphalt mixes

Prashanth, L. Durga; Palankar, Nitendra; Shankar, A. U. Ravi

doi:10.1007/s42947-019-0002-7

Cited by 14 publications

(2 citation statements)

References 18 publications

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“…Limited samples in this study suggest that the abundance of bee structures are related to the aging susceptibility of asphalt binders in terms of growth in asphaltene content under the same aging conditions. The methods of examining asphalt microstructures may be used to evaluate aging susceptibility [25] and rejuvenation of asphalt binders [26]. The identified relationship between binders' rheological properties and the rheological properties of maltenes and asphaltene content may be later used for the assessment of blended asphalt [27],…”

Section: Discussionmentioning

confidence: 99%

Recent advances in characterizing the “bee” structures and asphaltene particles in asphalt binders

Wang

Zhao²,

et al. 2020

Int. J. Pavement Res. Technol.

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The microscopic surface features of asphalt binders are extensively reported in existing literature, but relatively fewer studies are performed on the morphology of asphaltene microstructures and cross-examination between the surface features and asphaltenes. This paper reports the findings of investigating six types of asphalt binders at the nanoscale, assisted with atomic force microscopy (AFM) and scanning transmission electron microscopy (STEM). The surface features of the asphalt binders were examined by using AFM before and after being repetitively peeled by a tape. Variations in infrared (IR) absorbance at the wavenumber around 1700 cm−1, which corresponds to ketones, were examined by using an infrared s-SNOM instrument (scattering-type scanning near-field optical microscope). Thin films of asphalt binders were examined by using STEM, and separate asphaltene particles were cross-examined by using both STEM and AFM. In addition, connections between the microstructures and binder’s physicochemical properties were evaluated. The use of both microscopy techniques provide comprehensive and complementary information on the microscopic nature of asphalt binders. It was found that the dynamic viscosities of asphalt binders are predominantly determined by the zero shear viscosity of the corresponding maltenes and asphaltene content. Limited samples also suggest that the unique bee structures are likely related to the growth of asphaltene content during asphalt binder aging process, but more asphalt binders from different crude sources are needed to verify this finding.

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Section: Discussionmentioning

confidence: 99%

Recent advances in characterizing the “bee” structures and asphaltene particles in asphalt binders

Wang

Zhao²,

et al. 2020

Int. J. Pavement Res. Technol.

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“…According to statistics, at least 1.2 billion liters of WEO can be produced in China every year, but the utilization rate of WEO is less than 20% [1]. The WEO is applied to the field of rejuvenated asphalt [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Performance and Simulation Study of Aged Asphalt Regenerated from Waste Engine Oil

Zhang¹,

Zou

et al. 2022

Coatings

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In order to reuse waste resources (waste engine oil and waste asphalt mixture), the regeneration process of waste oil on aged asphalt is systematically explained. The BA was treated by aging test, and the basic mechanical properties, molecular dynamics simulation, and infrared spectrum test were carried out on this basis. The results showed that the WEO can restore the physical properties of the aged asphalt, and the recommended amount of WEO is 3%. The density of the asphalt model corresponds to the actual situation of the asphalt. The aged asphalt components are more aggregated. After the WEO was added, the components of asphalt aggregation were reduced and the diffusion ability was improved. Finally, infrared spectroscopy tests were conducted on asphalt specimens, and the results showed that the process of rejuvenated asphalt was dominated by physical reactions. Consequentially, the results of this study build a bridge between the performance and simulation of aged asphalt rejuvenated by WEO. Consequentially, the results of this research promote the recycling of WEO and waste asphalt pavement materials, ultimately advocating the sustainability of pavement construction.

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Utilization of Waste Cooking Oil as a Sustainable Product to Improve the Physical and Rheological Properties of Asphalt Binder: A Review

Eldeek

Jakarni

Muniandy

et al. 2022

Lecture Notes in Civil Engineering

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A study on the effect of rejuvenators in reclaimed asphalt pavement based stone mastic asphalt mixes

Cited by 14 publications

References 18 publications

Recent advances in characterizing the “bee” structures and asphaltene particles in asphalt binders

Recent advances in characterizing the “bee” structures and asphaltene particles in asphalt binders

Performance and Simulation Study of Aged Asphalt Regenerated from Waste Engine Oil

Utilization of Waste Cooking Oil as a Sustainable Product to Improve the Physical and Rheological Properties of Asphalt Binder: A Review

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