Evaluating Fatigue-Damage of Asphalt Binder and Mastic Modified with Nano-Silica and Synthesized Polyurethane Using VECD Method

Motamedi, Mana; Shafabakhsh, Gholamali; Azadi, Mohammad

doi:10.1061/(asce)mt.1943-5533.0003280

Cited by 17 publications

(2 citation statements)

References 30 publications

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“…Regarding asphalt binder fatigue, the linear amplitude sweep (LAS) test, an accelerated fatigue procedure, was developed by Johnson et al for evaluating the fatigue resistance of asphalt binder under cyclic loading (AASHTO TP 101) [ 13 , 14 , 15 , 16 ]. In cooperation with the viscoelastic continuum damage (VECD) model, the fatigue life of asphalt binder under constant strain amplitude fatigue loading can be simulated and predicted [ 17 , 18 , 19 , 20 ]. Recent research has been conducted and calibrated to increase the accuracy of the LAS-based fatigue life prediction by establishing a unified failure criterion [ 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Correlation Analysis of Linear Viscoelastic (LVE) Properties, Damage Resistance and Microstructure of Unmodified Asphalt Binders with the Same Penetration Grade

Wang

Song

Wang³

et al. 2022

Materials

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The penetration grade system is still widely adopted for selecting asphalt binder with desired paving performance. However, the initial material compositions of asphalt binder with the same penetration level are still different, and vary with the crude oil source and essentially result in different rheological performance. This study aimed to assess the linear viscoelastic (LVE) properties, and high- and intermediate-temperature and microscale characteristics of seven unmodified asphalt binders from different sources and countries with the same penetration level of 70. The LVE parameters were firstly evaluated followed by comparisons to various damage-based indexes. The microstructure of asphalt binders was further investigated followed by correlations between morphology and performance parameters. Experimental results indicate the |G*|/sin δ is well related to the MSCR-based non-recoverable creep compliance; furthermore, the R and |G*|·sin δ can generally represent the LAS-based failure strain and fatigue life, respectively. The viscoelastic nature of tested binders was clearly distinguished and related to rheological performance by atomic force microscopy (AFM). The roughness parameters and the phases’ content derived from AFM images showed significant correlations with LVE characteristics and fatigue resistance nature, respectively. This research provides theoretical foundations for further investigating the rheological performance and microstructure characteristics, and their correlations with asphalt binders.

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Section: Introductionmentioning

confidence: 99%

Correlation Analysis of Linear Viscoelastic (LVE) Properties, Damage Resistance and Microstructure of Unmodified Asphalt Binders with the Same Penetration Grade

Wang

Song

Wang³

et al. 2022

Materials

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“…Al-Omaria et al [ 24 ] found the additions of crumb tire rubber and nanosilica increased the resistance to rutting, which is manifested by the increasing rutting parameter (G*/sinδ). Motamedi et al [ 25 ] found nanosilica and synthesized polyurethane improved fatigue performances of the asphalt binder and mastic through time sweep (TS) and linear amplitude sweep (LAS) tests. Liu et al [ 26 ] found the addition of oxidized crumb rubber and nano-SiO 2 could significantly improve the rheological properties of asphalt binder at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of the Interfacial Bond between Asphalt-Binder and Aggregates under Different Aging Conditions

et al. 2021

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Aging has a detrimental impact on the interfacial interaction and bonding between asphalt-binder and aggregates, which influence ultimately on the performance of asphalt mixtures and pavements. Evaluation of the mechanical properties of the interface between the asphalt-binder and aggregates has thus become a hot research topic, particularly as a function of aging. In this study, the interfacial tensile strength, compressive strength, elastic modulus, and interfacial recovery energy were measured and quantified using molecular dynamic simulation. Whilst the free volume of the asphalt mixtures exhibited sensitivity to aging, the interfacial tensile strength decreased with an increase in the degree of aging. In general, the mechanical properties of the asphalt-binder-aggregate interface were found to be significantly dependent on the aggregate type. Furthermore, the study results indicated that interfacial recovery energy is a key characteristic property for characterizing the interfacial adhesive force within asphalt mixtures. Overall, the study of mechanical properties of the asphalt-binder and aggregate interface, as presented in this paper, contributes to quantifying the adhesive properties and improving the performance of asphalt mixtures.

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Laboratory study on the suitability of nano-silica as a modifier for asphalt binders

Sukhija

Saboo

Yadav

et al. 2021

Construction and Building Materials

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Evaluating Fatigue-Damage of Asphalt Binder and Mastic Modified with Nano-Silica and Synthesized Polyurethane Using VECD Method

Cited by 17 publications

References 30 publications

Correlation Analysis of Linear Viscoelastic (LVE) Properties, Damage Resistance and Microstructure of Unmodified Asphalt Binders with the Same Penetration Grade

Correlation Analysis of Linear Viscoelastic (LVE) Properties, Damage Resistance and Microstructure of Unmodified Asphalt Binders with the Same Penetration Grade

Mechanical Properties of the Interfacial Bond between Asphalt-Binder and Aggregates under Different Aging Conditions

Laboratory study on the suitability of nano-silica as a modifier for asphalt binders

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