Nanoindentation and Atomic Force Microscopy Investigations of Asphalt Binder and Mastic

Veytskin, Yuriy; Bobko, Christopher P.; Castorena, Cassie

doi:10.1061/(asce)mt.1943-5533.0001532

Cited by 29 publications

(7 citation statements)

References 24 publications

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“…Besides, creep compliance is another performance criterion of a viscoelastic material, and therefore a great creep compliance means a weak deformation resistance. The formula of creep compliance can be drawn as Equation (11). 11) where J(t) is the creep compliance, in 1/MPa.…”

Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

“…The formula of creep compliance can be drawn as Equation (11). 11) where J(t) is the creep compliance, in 1/MPa. The dissipated energy ratio is similar to the relaxation time for indicating the stress dissipation, and all three curves in Figure 13a show that the dissipated energy ratio increases with the increases in distance.…”

Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

“…Nowadays, atomic force microscopy (AFM) and scanning electron microscopy (SEM) have been employed widely to explore the nano/micro-scale states of asphalt mortar and mixture. Utilizing AFM and SEM improves the research progress of interfacial zone characteristics because analyzing components and morphology are beneficial to understand the influence of microstructure on damage states [10][11][12][13][14][15]. Besides, to consider the influence of aggregate properties, mineralogical and chemical components of aggregates are also determined by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Microstructural Characteristics of Interfacial Zone in Asphalt Mixture Considering the Influence of Aggregates Properties

Huang

Liao

et al. 2020

Materials

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The interfacial zone between aggregate particles and asphalt mortar presents a significant effect on the strength of an asphalt mixture. In this paper, basalt, limestone, and diabase were selected, and the influence of these aggregates on the mechanical characteristics and microstructures of the interfacial zone was investigated. Nanoindentation was employed to measure the change law of mechanical behavior in the region of the interfacial zone, and corresponding viscoelastic parameters were deduced; microstructural morphology was observed by scanning electron microscopy, and the effect of the mineralogical components on the interfacial zone was analyzed as well. Results show that the mechanical behavior of the interfacial transition zone is complicated. The modulus and hardness of asphalt mortar decrease with the increases in the aggregate surface distance, and then keep stable after the distance is greater than 40 μm. Both the relaxation time and dissipated energy ratio of the interfacial zone affected by the different aggregate types show a similar change law. These states indicate that aggregate types have little influence on the stress dissipation of asphalt mortar. However, creep compliances that quantify the ability of the deformation resistance show a significant difference; microstructure morphologies of the interfacial zone are affected by aggregates obviously, and micro pores present a different distribution and state in the interfacial zone.

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Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

Section: Viscoelasticity States Of Interfacial Zonementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructural Characteristics of Interfacial Zone in Asphalt Mixture Considering the Influence of Aggregates Properties

Huang

Liao

et al. 2020

Materials

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“…Over the past few decades, a large number of experimental methods have been proposed. Several precision measuring instruments such as atomic force microscopy [3][4][5] (AFM), scanning force microscope [6,7] (SFM), and nanoindentation, have been involved. Among the above methods, nano-indentation experiments [3,8] have been increasingly used in recent years.…”

Section: Introductionmentioning

confidence: 99%

Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation

Zhu

Zhang

et al. 2022

Micro & Nano Letters

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For the sake of comprehending the mechanical mechanisms of nano-twinned (NT) Cu-Ag alloys with grain boundary affect zone (GBAZ) segregation, molecular dynamics (MD) simulations were used to observe its behaviours during the nano-indentation progress. The effect of grain size, alloying atoms (Ag) content as well as twin boundary spacing (TBS) on the deformation behaviours are considered in this investigation. The open visualization tool OVITO is used to directly observe the deformation progress of nanocrystals during nano-indentation. The reaction between lattice dislocations and twin boundaries is recorded and analyzed in detail as the indentation deepens. The simulation results demonstrate a positive correlation between the twin boundary spacing and the occurrence of dislocations. The dislocation rings will appear more effortlessly as the TBSs increase. Meanwhile, it is frequently observed that the face centre cubic (FCC) atoms are transformed into body centre cubic (BCC) atoms. This work will help to seek for novel metal materials with high strength, high ductility and great electrical conductivity.

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“…With the advent of new technologies, capturing of rich information of materials at micro-or nanoscale levels has become easy in the recent time, and it has successfully been utilized in other natural science and engineering disciplines. Asphalt researchers have also recently advanced knowledge related to binder performance at much needed microscopic level, which is more important than meso-or macroscale [6][7][8]. Based on findings of the existing literature, it is clear that the behavior of asphalt pavement materials depends highly on their microstructure.…”

Section: Introductionmentioning

confidence: 99%

A Synthesis of Computational and Experimental Approaches of Evaluating Chemical, Physical, and Mechanistic Properties of Asphalt Binders

Hossain

2019

Advances in Civil Engineering

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Asphalt binder is a very complex chemical compound. Much work has been done to understand and model its chemical, morphological, rheological, and mechanical features. This paper synthesizes and presents findings from pertinent studies available in the public domain. Understanding of asphalt characteristics at the very finite level is the first critical step to develop a better macroscopic- or pavement-level performance model. This paper showcases a summary of current knowledge gained on (a) how chemical elemental compositions and molecular groups play critical roles in asphalt binder’s performance in pavement composites; (b) morphological properties and their relationships with the asphalt’s structural performance; and (c) mechanistic characteristics of asphalt binder’s at nanoscopic, mesoscopic, and microscopic levels, and how they are related to macroscopic- or pavement-level performance.

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Nanoindentation and Atomic Force Microscopy Investigations of Asphalt Binder and Mastic

Cited by 29 publications

References 24 publications

Microstructural Characteristics of Interfacial Zone in Asphalt Mixture Considering the Influence of Aggregates Properties

Microstructural Characteristics of Interfacial Zone in Asphalt Mixture Considering the Influence of Aggregates Properties

Nano‐indentation investigation on nano‐twinned Cu–Ag alloys with GBAZ segregation

A Synthesis of Computational and Experimental Approaches of Evaluating Chemical, Physical, and Mechanistic Properties of Asphalt Binders

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