Effect of Laboratory Aging Levels on Asphalt Binder Chemical/Rheological Properties and Fracture Resistance of Asphalt Mixtures

Barghabany, Peyman; Zhang, Jun; Mohammad, Louay N.; Cooper, Samuel B.

doi:10.1061/(asce)mt.1943-5533.0004126

Cited by 7 publications

(9 citation statements)

References 21 publications

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“…The SARA analysis determines the content of chemical components of asphalt binder by separating it into saturates, aromatics, resins, and asphaltenes. In the colloidal structure of asphalt binder, asphaltenes are the most viscous and polar component among SARA components, and its aggregation phenomenon has been extensively observed in previous studies (15,27). The increase in the asphaltene component is primarily a result of the oxidative aging process.…”

Section: Saturate Aromatic Resin and Asphaltene Sara Analysismentioning

confidence: 88%

“…The rheological and chemical properties of asphalt binder and the volumetric properties of asphalt mixture have been reported to have significant effects on the SCB J c ( 9 , 15 ). Therefore, various parameters for volumetric properties of asphalt mixture and rheological and chemical properties of asphalt binder were considered as potential model inputs in this study.…”

Section: Data Preparationmentioning

confidence: 99%

“…The amplitude sweep test was performed at a fixed frequency of 10 Hz by applying a torsional strain, which increased linearly from 0.1% to 30%. For comparison of the fatigue performance between different asphalt mixtures, LAS tests were conducted at a temperature of 18°C ( 15 ). LAS test results were analyzed based on the viscoelastic continuum damage (VECD) theory to obtain a damage characteristic relationship ( 23 , 24 ).…”

Section: Data Preparationmentioning

confidence: 99%

“…In total, 66 sets of data points from 21 mixtures were collected in this study. The following gives a brief description of the 31 potential asphalt binder and mixture properties related inputs considered in this study ( 9 , 15 , 27 , 28 ). Except for these inputs, the long-term aging days (LTAD) was also considered for model development.…”

Section: Data Preparationmentioning

confidence: 99%

See 3 more Smart Citations

Use of Random Forest to Predict Intermediate Temperature SCB J_c Parameter of Long-Term Aged Asphalt Mixtures

Ma,

Liu,

Mohammad

et al. 2023

Transportation Research Record: Journal of the Transportation R

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With the growing use of reclaimed asphalt pavement (RAP), recycled asphalt shingles (RAS), and other innovative additives in asphalt mixtures, there are concerns about the accuracy of Superpave volumetric-based mixture design. Performance tests in mix design procedures are needed to ensure desirable pavement performance. The Louisiana Department of Transportation and Development (LADOTD) has adopted the semi-circular bend (SCB) critical strain energy release rate parameter, Jc, to evaluate the cracking resistance of asphalt mixtures. To address practical shortcomings, this study aims to develop a predictive model to estimate SCB Jc at intermediate temperature of long-term aged (LTA) asphalt specimens from volumetric properties of plant-produced asphalt mixtures, and rheological and chemical properties of unaged asphalt binder by using a machine-learning model, random forest. Asphalt mixture SCB test and asphalt binder rheological and chemical properties tests were conducted. Stepwise correlation analysis was used to determine the most influential variables to SCB Jc. Random forest model was optimized using grid search with hyperparameter combinations. Results show that the developed random forest model was able to predict the SCB Jc fracture parameter of asphalt mixtures and a good agreement was observed between predicted and measured SCB Jc values. Variable importance scores based on mean decrease in impurity (MDI) showed that the Δ Tc had the most influence on SCB Jc prediction accuracy, and other inputs such as coarse aggregate type, LTA days, Fourier transform infrared spectroscopy test carbonyl index, and linear amplitude sweep test ALas also had significant effects on SCB Jc.

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Section: Saturate Aromatic Resin and Asphaltene Sara Analysismentioning

confidence: 88%

Section: Data Preparationmentioning

confidence: 99%

Section: Data Preparationmentioning

confidence: 99%

Section: Data Preparationmentioning

confidence: 99%

See 2 more Smart Citations

Use of Random Forest to Predict Intermediate Temperature SCB J_c Parameter of Long-Term Aged Asphalt Mixtures

Ma,

Liu,

Mohammad

et al. 2023

Transportation Research Record: Journal of the Transportation R

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“…1,2 At the same time, the superposition of vehicle loads poses challenges to the service life of asphalt pavement. 3,4 Road researchers have developed an asphalt self-healing accelerator using dynamic chemical bond recombination and the designability of polyurethane materials. [5][6][7] However, the rheological properties and aging resistance of asphalt modified by this selfhealing accelerator based on dynamic chemical bond are still unclear.…”

Section: Introductionmentioning

confidence: 99%

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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Using surface free energy and mechanical methods to investigate the effect of aging on the fatigue cracking potential of UHMWPE-modified HMA

Hamedi,

Talebi,

Harehdasht

2024

Case Studies in Construction Materials

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Effect of Laboratory Aging Levels on Asphalt Binder Chemical/Rheological Properties and Fracture Resistance of Asphalt Mixtures

Cited by 7 publications

References 21 publications

Use of Random Forest to Predict Intermediate Temperature SCB J_c Parameter of Long-Term Aged Asphalt Mixtures

Use of Random Forest to Predict Intermediate Temperature SCB J_c Parameter of Long-Term Aged Asphalt Mixtures

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

Using surface free energy and mechanical methods to investigate the effect of aging on the fatigue cracking potential of UHMWPE-modified HMA

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Effect of Laboratory Aging Levels on Asphalt Binder Chemical/Rheological Properties and Fracture Resistance of Asphalt Mixtures

Cited by 7 publications

References 21 publications

Use of Random Forest to Predict Intermediate Temperature SCB Jc Parameter of Long-Term Aged Asphalt Mixtures

Use of Random Forest to Predict Intermediate Temperature SCB Jc Parameter of Long-Term Aged Asphalt Mixtures

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

Using surface free energy and mechanical methods to investigate the effect of aging on the fatigue cracking potential of UHMWPE-modified HMA

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Product

Resources

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Use of Random Forest to Predict Intermediate Temperature SCB J_c Parameter of Long-Term Aged Asphalt Mixtures

Use of Random Forest to Predict Intermediate Temperature SCB J_c Parameter of Long-Term Aged Asphalt Mixtures