Linear and nonlinear viscoelastic parameters of asphalt binders modified with softening agents

Mainieri, Javier J. García; Singhvi, Punit; Özer, Hasan; Sharma, Brajendra K.; Al‐Qadi, Imad L.

doi:10.1080/14680629.2022.2131603

Cited by 6 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Applying asphalt binder additives can be utilised to achieve different goals, which may be as simple as softening the asphalt binder, reducing the asphalt mix processing temperatures, rejuvenating the properties of aged asphalt binder [ 4 ], or even mitigating the effects of binder ageing [ 5 ]. Commonly investigated additives such as petroleum oils, bio-oils [ 6 , 7 ], bio-polymers [ 8 ], and vegetable oil-based [ 9 ] additives usually decrease the stiffness of the asphalt binder [ 10 , 11 , 12 ] and may significantly impact other properties of the binders, such as temperature performance [ 13 ], fatigue resistance [ 14 , 15 ], and large strain performance [ 11 ], and these effects can be affected by binder ageing.…”

Section: Introductionmentioning

confidence: 99%

Ageing Evaluation of Foamed Polymer Modified Bitumen with Bio-Flux Additive

et al. 2023

View full text Add to dashboard Cite

This paper presents the results of an analysis of the changes in the stiffness of asphalt binders modified with a bio-flux additive and subjected to the processes of foaming and short-term ageing. The purpose of the analyses was to determine changes in the rheological properties of asphalt binder as a result of technological processes characteristic of hot and warm mix asphalt technology. Three asphalt binders with similar penetration but varying degrees of polymer modification were tested: 50/70, 45/80–55 polymer-modified bitumen, and 45/80–80 highly modified bitumen. Tests were carried out on four groups of binders: original binders, foamed binders after 14 days of storage, non-foamed binders after Rolling Thin Film Oven Test (RTFOT) ageing, and foamed binders after 14 days of storage subjected to RTFOT ageing. The master curves of the complex shear modulus G* were analysed, and three indexes of binder stiffening were determined, characterising the investigated effects. The tests showed that some of the stiffening indices significantly depended on the degree of polymer modification and the content of the bio-flux additive. Moreover, it was found that the foaming process in the case of paving-grade bitumen and polymer-modified bitumen did not contribute to the additional stiffening of the binders.

show abstract

Section: Introductionmentioning

confidence: 99%

Ageing Evaluation of Foamed Polymer Modified Bitumen with Bio-Flux Additive

et al. 2023

View full text Add to dashboard Cite

show abstract

Nonlinear viscoelastic effect on the fatigue performance of wood tar-based rejuvenated asphalt

Wang,

Jiang,

Liu

et al. 2024

Construction and Building Materials

View full text Add to dashboard Cite

Modeling linear and nonlinear viscoelastic oscillatory rheometric stress-strain hysteresis of asphalt binders

Diab,

You,

Topa

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Understanding the complex stress-strain hysteresis behavior of asphalt binders under varied conditions is critical for optimizing pavement performance. This study addresses the challenge by analyzing and modeling asphalt binder responses in oscillating shear mode across different aging states (unaged, short-term aged, and long-term aged), stretch amplitudes, frequencies, and temperatures. Fifty-three stress-strain hysteresis loops were meticulously analyzed, revealing distinct stress paths relative to applied stretch levels. A nine-parameter parallel rheological framework model was developed, integrating a four-parameter eight-chain (FEC) hyperelastic model in one network and a FEC hyperelastic model with a linear viscoelastic flow element in series in another. This constitutive model was implemented in LS-DYNA finite element simulations to predict experimentally-measured stress-strain hysteresis loops accurately. The research demonstrates the model’s capability to simulate both linear and nonlinear viscoelastic responses of asphalt binders across a wide range of environmental and loading conditions. This approach significantly enhances our ability to capture and understand the stress-strain behavior critical for asphalt pavement durability and performance optimization.

show abstract

Linear and nonlinear viscoelastic parameters of asphalt binders modified with softening agents

Cited by 6 publications

References 21 publications

Ageing Evaluation of Foamed Polymer Modified Bitumen with Bio-Flux Additive

Ageing Evaluation of Foamed Polymer Modified Bitumen with Bio-Flux Additive

Nonlinear viscoelastic effect on the fatigue performance of wood tar-based rejuvenated asphalt

Modeling linear and nonlinear viscoelastic oscillatory rheometric stress-strain hysteresis of asphalt binders

Contact Info

Product

Resources

About