Evaluating the ageing degrees of bitumen by rheological and chemical indices

Hu, Yanjia; Xia, Wei; Xue, Yu; Zhao, Pinxue; Wen, Xuanye; Wei, Si; Wang, Haopeng; Zhou, Lu; Airey, Gordon

doi:10.1080/14680629.2023.2180289

Cited by 34 publications

(9 citation statements)

References 26 publications

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“…It can be found that T C , S are more sensitive to the filler incorporation by comparing different asphalt mastics, so S determines the critical temperature of asphalt mastic. To quantify the effect of filler on low-temperature performance, the low-temperature hardening index LSI S (Equation (12)) based on T C , S is proposed, and LSI m (Equation (13)) based on T C , m is calculated as the control [ 39 ].

…”

Section: Resultsmentioning

confidence: 99%

The Effect of GFRP Powder on the High and Low-Temperature Properties of Asphalt Mastic

et al. 2023

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Glass fiber reinforced polymer (GFRP) is the main composite material used in wind turbine blades. In recent years, zero-carbon energy sources such as wind power have been widely used to reduce carbon emissions, resulting in a large amount of waste GFRP, and causing serious environmental problems. To explore efficient ways to recycle waste GFRP, this study explores the impact of adding GFRP powder (nominal maximum particle size ≤ 0.075 mm) on the high and low temperature properties of asphalt mastic. Samples of GFRP asphalt mastics were prepared with filler-asphalt mass ratios of 0.01:1, 0.1:1, 0.8:1, and 1:1, as well as two control samples of limestone filler asphalt mastics with filler-asphalt mass ratios of 0.8:1 and 1:1. The study analyzed the effect of GFRP on the asphalt mastic’s performance using temperature sweep, MSCR, and BBR tests. Results showed that the presence of GFRP improved the high-temperature resistance and recovery of asphalt mastic but led to decreased low-temperature crack resistance. The results suggest that GFRP has the potential to be used as a filler in asphalt mastic, with a recommended filler-asphalt mass ratio range of less than 0.8:1 for optimal low-temperature performance. However, further research is necessary to determine the optimal content of GFRP in asphalt mastic and to study its impact on other road performance metrics.

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…”

Section: Resultsmentioning

confidence: 99%

The Effect of GFRP Powder on the High and Low-Temperature Properties of Asphalt Mastic

et al. 2023

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“…The differences in rheological properties of asphalt after aging are reflected in many aspects. Some researchers hope to evaluate the aging behaviors of asphalt through the difference in integral area of the modulus main curve 25 . This comprehensive rheological index may not fully reflect the performance degradation caused by aging on temperature sensitive materials such as asphalt, especially modified asphalt 37 .…”

Section: Methodsmentioning

confidence: 99%

“…Some researchers hope to evaluate the aging behaviors of asphalt through the difference in integral area of the modulus main curve. 25 This comprehensive rheological index may not fully reflect the performance degradation caused by aging on temperature sensitive materials such as asphalt, especially modified asphalt. 37 Further refinement of aging rheological indicators is carried out in this work.…”

Section: Rheological Characteristics Of Wide Temperature Rangementioning

confidence: 99%

“…Lily first used the integral area of the rheological master curve to evaluate the aging resistance of asphalt binder within a wide temperature threshold range. 24,25 The change of modulus and phase angle caused by aging hardening is also often used to characterize the aging resistance of asphalt binder. 15 The change of chemical composition is also one of the methods to characterize the aging resistance of asphalt.…”

Section: Introductionmentioning

confidence: 99%

“…Some scholars regarded the change of rheology parameters before and after aging as one of the indicators to evaluate the aging resistance of asphalt binder. Lily first used the integral area of the rheological master curve to evaluate the aging resistance of asphalt binder within a wide temperature threshold range 24,25 . The change of modulus and phase angle caused by aging hardening is also often used to characterize the aging resistance of asphalt binder 15 .…”

Section: Introductionmentioning

confidence: 99%

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Rheological properties and aging resistance of self‐healing polyurea elastomer modified asphalt

Li,

Zhang,

et al. 2024

Polymer Engineering & Sci

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Polymer modified asphalt containing dynamic chemical bonds has the potential to increase the service life of asphalt pavement due to its excellent self‐healing ability. The effect of this self‐healing accelerator with dynamic chemical bond on the rheological properties and aging resistance of asphalt binder is still unclear. In this study, a self‐healing polyurea elastomer (PUA) modified asphalt containing dynamic disulfide bonds was prepared. The high‐ and low‐temperature performance and fatigue resistance of PUA modified asphalt were studied through multiple stress creep, low‐temperature bending beam rheometer, mechanical glass transition temperature, and linear amplitude scanning tests. Moreover, considering the service environment of asphalt over a wide temperature range (−30–70°C), three rheological aging indices (RAI) were proposed. At the same time, the aging resistance of PUA modified asphalt was evaluated by chemical aging index (CAI) based on carbonyl and sulfoxide groups. Finally, a linear relationship is established between RAI and CAI over a wide temperature range. The experimental results show that self‐healing accelerators can increase the resistance to permanent deformation of asphalt by 47.41% and the fatigue resistance by 88.54%. The S value of PUA modified asphalt decreased by at most 33.21% and the m value increased by at most 35.23% compared with BA at −18°C. Moreover, PUA can improve the long‐term thermal oxygen aging resistance of asphalt binders by at least 38.33% over a wide temperature range.Highlights Rheological properties of self‐healing polyurea elastomer modified asphalt. Aging resistance of self‐healing polyurea elastomer modified asphalt. Proposed rheological aging indices for different temperature ranges. Clarified the correlation between chemical–rheological aging indices.

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Analysis of Microstructure and Self-Healing Characteristics of Asphalt Under Freeze–Thaw Cycle

Xiao,

Ren,

Dong

et al. 2024

Int. J. Pavement Res. Technol.

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Evaluating the ageing degrees of bitumen by rheological and chemical indices

Cited by 34 publications

References 26 publications

The Effect of GFRP Powder on the High and Low-Temperature Properties of Asphalt Mastic

The Effect of GFRP Powder on the High and Low-Temperature Properties of Asphalt Mastic

Rheological properties and aging resistance of self‐healing polyurea elastomer modified asphalt

Analysis of Microstructure and Self-Healing Characteristics of Asphalt Under Freeze–Thaw Cycle

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