Application of Atomic Force (AFM), Environmental Scanning Electron (ESEM) and Confocal Laser Scanning Microscopy (CLSM) in bitumen: A review of the ageing effect

Pipintakos, Georgios; Hasheminejad, Navid; Lommaert, Caitlin; Bocharova, Anastassiya; Blom, Johan

doi:10.1016/j.micron.2021.103083

Cited by 50 publications

(18 citation statements)

References 106 publications

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“…Normally, this shift causes a different signal to be reflected from the laser source shining on the back of the cantilever. The motion of the cantilever beam makes the laser beam deviate from the original position, and the measured voltage is converted to each capillary force, and then the image can be obtained from the measured signal [ 40 ].…”

Section: Chemical Tests Of Asphalt Materialsmentioning

confidence: 99%

“…The contact mode refers to the mode in which the tip maintains contact with the sample when the surface moves along the plane under constant load [ 40 ]. One end of the microcantilever, which is sensitive to weak force, is fixed, and the other end has a small tip.…”

Section: Afm Test On Asphalt Materialsmentioning

confidence: 99%

“…Although this mode increases the sensitivity of the microscope, the resolution is lower and the scanning speed is slower than the contact and tap modes because of the larger distance between the tip and the sample surface and the measurement in the change in the natural resonance amplitude of the cantilever [ 40 ]. In addition, this mode is relatively difficult to operate and is usually not suitable for imaging in liquid.…”

Section: Afm Test On Asphalt Materialsmentioning

confidence: 99%

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Application of Atomic Force Microscopy as Advanced Asphalt Testing Technology: A Comprehensive Review

et al. 2022

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In the past three decades, researchers have engaged in the relationship between the composition, macro performance, and microstructure of asphalt. There are many research results in the use of atomic force microscopy (AFM) to study the microstructure and related mechanisms of asphalt. Based on previous studies, the performance of asphalt from its microstructure has been observed and analyzed, and different evaluation indices and modification methods have been proposed, providing guidance toward improving the performance of asphalt materials and benefiting potential applications. This review focuses on the typical application and analysis of AFM in the study of the aging regeneration and modification properties of asphalt. Additionally, this review introduces the history of the rheological and chemical testing of asphalt materials and the history of using AFM to investigate asphalt. Furthermore, this review introduces the basic principles of various modes of application of AFM in the microstructure of asphalt, providing a research direction for the further popularization and application of AFM in asphalt or other materials in the future. This review aims to provide a reference and direction for researchers to further popularize the application of AFM in asphalt and standardize the testing methods of AFM. This paper is also helpful in further exploring the relationship between the microstructure and macro performance of asphalt.

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Section: Chemical Tests Of Asphalt Materialsmentioning

confidence: 99%

Section: Afm Test On Asphalt Materialsmentioning

confidence: 99%

Section: Afm Test On Asphalt Materialsmentioning

confidence: 99%

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Application of Atomic Force Microscopy as Advanced Asphalt Testing Technology: A Comprehensive Review

et al. 2022

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“…To minimise the effects of thermal history and other effects like the nature of the sample substrate [37,38], the preparation method in [27] was adopted. In this procedure, a small quantity of bitumen is heated to 160 o C for 15 minutes and after proper stirring with a metal spoon, a hot droplet is placed on a 76x26 mm pre-cleaned glass slide (Thermo Scientific) with ground edges and a frosted end.…”

Section: Microscopic Techniques 231 Atomic Force Microscopy (Afm)mentioning

confidence: 99%

“…Additionally, liquid and solid materials, as well as transparent overlays, can be investigated [26]. Therefore, the CSLM is another potential tool to capture the bee-like structures on bitumen surfaces and its convergence with AFM observations is of particular importance [27].…”

Section: Introductionmentioning

confidence: 99%

Coupling AFM and CLSM to investigate the effect of ageing on the bee structures of bitumen

Pipintakos

Blom

Soenen³

et al. 2021

Micron

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Mechanical performance analysis of polyurethane‐modified asphalt using molecular dynamics method

Huang

Shen

et al. 2021

Polymer Engineering & Sci

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In this study, the mechanical performance of polyurethane (PU)‐modified asphalt was investigated. To this end, the molecular dynamics method was adopted to study the influence of the PU modifier on the compatibility, mechanical properties, and structure of asphalt. Using the Materials Studio software, a four‐component molecular model of asphalt, a PU molecular model, and an asphalt–PU mixed system model were constructed, and the molecular density and glass transition temperature (Tg) were used to verify the performance of the aforementioned models. Molecular dynamics simulations of the three molecular models were conducted under different temperatures, and the solubility parameter (δ), interaction energy, mechanical properties, and radial distribution functions (RDFs) were obtained. The results showed that at 413.15 K (140°C), the difference between the solubility parameters of the asphalt and PU molecules (∆δ) is the smallest, and their interaction reaches the most optimal phase state. The effects of the PU modifier on the Young's modulus, bulk modulus, and shear modulus of asphalt were studied. Finally, the RDF analysis showed that the PU modifier has a direct effect on the degree of swelling and dispersion between the aromatic–aromatic and saturate–saturate components in the asphalt, reducing the aggregation of both molecules. This verifies the PU modification effect.

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Application of Atomic Force (AFM), Environmental Scanning Electron (ESEM) and Confocal Laser Scanning Microscopy (CLSM) in bitumen: A review of the ageing effect

Cited by 50 publications

References 106 publications

Application of Atomic Force Microscopy as Advanced Asphalt Testing Technology: A Comprehensive Review

Application of Atomic Force Microscopy as Advanced Asphalt Testing Technology: A Comprehensive Review

Coupling AFM and CLSM to investigate the effect of ageing on the bee structures of bitumen

Mechanical performance analysis of polyurethane‐modified asphalt using molecular dynamics method

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