Development of an empirical relationship between non-recoverable creep compliance &amp; zero shear viscosity for wide-ranging stiffness of asphalt binders

Sharma, Ankit; Naga, Gondaimei Ransinchung Rongmei; Kumar, Praveen; Raha, Sumanta

doi:10.1016/j.conbuildmat.2022.126764

Cited by 8 publications

(2 citation statements)

References 27 publications

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“…This may be related to how these tests are performed, which can be broadly classified into two categories. The first category ( T CR , N f , and ductility) examines the ability of the asphalt to adapt to deformation at medium or low temperatures [ 53 , 88 , 89 ], whereas the second category ( J nr 3.2 , R 3.2 , penetration, and softening point) examines the ability of the asphalt to resist or recover deformation at high and medium temperatures [ 20 ]. Therefore, the ranking of the indicators obtained from the same category of the test may have some similarities.…”

Section: Discussionmentioning

confidence: 99%

Correlation Analysis between Mechanical Properties and Fractions Composition of Oil-Rejuvenated Asphalt

et al. 2022

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To clarify the intrinsic relationship between the mechanical properties of asphalt and its fraction composition, the SARA fraction composition and six macroscopic mechanical properties (critical cracking temperature (TCR), fatigue life (Nf), non-recoverable creep (Jnr3.2), penetration, ductility, and softening point) were investigated for 16 asphalt samples. Fraction contents of asphaltene and aromatic are strongly correlated with TCR and ductility (R2 > 0.92) that characterize the ability of asphalt to adapt to deformation at low and medium temperatures. Heavy fraction (asphaltene and resins) content is also strongly correlated with (R2 > 0.90) penetration and Jnr3.2 that characterize the resistance of the asphalt to overall deformation at medium and high temperatures. To express the changes in the four fractions simultaneously with one indicator, a statistic, average deviation of the fractions between the given asphalt and its original (marked σ), is introduced in this study to characterize the degree of asphalt aging based on the fraction changes. It normalizes the four simultaneous change indicators (percentage of SARA fractions) during asphalt aging into one indicator. This new indicator has a strong correlation with several mechanical performance indicators of asphalt, where it is strongly correlated with TCR (R2 > 0.90), ductility, and penetration, which are also well correlated with Jnr3.2 (R2 > 0.85), Nf (R2 > 0.75), and softening point (R2 > 0.75).

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Section: Discussionmentioning

confidence: 99%

Correlation Analysis between Mechanical Properties and Fractions Composition of Oil-Rejuvenated Asphalt

et al. 2022

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“…At a vanishing shear rate/loading frequency, the pseudoplastic liquid (asphalt binder) behaves as the Newtonian liquid with a defined viscosity. This viscosity is called the ZSV [ 7 ]. Previous studies have shown that ZSV value has a good correlation with rutting performance of asphalt mixtures [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Zero Shear Viscosity of Hybrid Modified Asphalts and Its Gray Correlation with Other Properties

2022

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The viscosity of modified asphalt binders is the most important property to ensure the durability of open-graded friction course (OGFC). Zero shear viscosity (ZSV) is considered to be the optimum result to reflect the rutting characterization of high viscosity modified asphalt binders, compared with conventional vacuum capillary viscosity. However, there are few reports on using ZSV to evaluate the material characteristics of hybrid modified asphalt binders and to establish the relationship between ZSV and other properties. In this paper, a high viscosity hybrid modified asphalt binder was prepared with Sty-rene-butadiene-styrene (SBS) and Crumb rubber modifier (CRM). ZSV, three major indicators, 60 °C dynamic viscosity, 135 °C Brookfield viscosity, and a dynamic rheological test were used to determine the properties of the hybrid modified asphalt binders. The relationship between ZSV and other properties was studied by the gray correlation analysis method. Results indicated that: (1) The viscosity of hybrid modified asphalt binders increases with the decreasing frequency. When the frequency tends to 0, the viscosity of asphalt at this time is zero shear viscosity; (2) The values of the ZSV of hybrid modified asphalt binders have a large increase as the dose of both CRM and SBS modifiers were increased; and (3) The ZSV at 60 °C correlated well with the performance properties of rutting factor (G*/sin(θ)), indicating that the ZSV of hybrid modified asphalt binders could be a good indicator of performance.

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Permanent Deformation Characteristics of Hot Recycled Blends of Three Different RAP Sources

et al. 2023

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Development of an empirical relationship between non-recoverable creep compliance & zero shear viscosity for wide-ranging stiffness of asphalt binders

Cited by 8 publications

References 27 publications

Correlation Analysis between Mechanical Properties and Fractions Composition of Oil-Rejuvenated Asphalt

Correlation Analysis between Mechanical Properties and Fractions Composition of Oil-Rejuvenated Asphalt

Zero Shear Viscosity of Hybrid Modified Asphalts and Its Gray Correlation with Other Properties

Permanent Deformation Characteristics of Hot Recycled Blends of Three Different RAP Sources

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