Methodology for estimating the modulus of elasticity of bitumen under different aging conditions by AFM

García, Adriana; Aguiar-Moya, José Pablo; Salazar-Delgado, Jorge; Baldi, Alejandra; Loría-Salazar, Luis Guillermo

doi:10.1080/14680629.2019.1588152

Cited by 16 publications

(5 citation statements)

References 24 publications

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“…AFM techniques have been recently used as a nano-scale test to investigate the general changes in bitumen due to the variation in its penetration grade, performance grade, modification, ageing, moisture damage, etc. [17][18][19][20][21][22]. In a study conducted by Xu et al [23] to investigate the adhesive surface characteristics of bitumen, the micro-phase separated topographic morphologies were visualized by AFM, where measurement of topography, adhesion and elastic modulus were made.…”

Section: Introductionmentioning

confidence: 99%

Determining the Effect of Ageing of Nano-Clay Modified Bitumen Using Atomic Force Microscopy

et al. 2021

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This study investigates the effects of ageing simulation on the physical properties of nano-clay modified bitumens (NCMBs). Bitumen with penetration grade 60/70 is modified with 0, 2 and 4% nano-clay, and the consistency of the samples is characterized using the penetration, softening point, and viscosity tests before and after aging. Atomic force microscopy (AFM) is used to evaluate the surface roughness and tip deflection of the modified bitumens. The results of the consistency tests revealed that the incorporation of nano-clay up to 4% NC resulted in increased hardness of the modified bitumen, and all modified bitumens were affected by ageing; the results for surface roughness and tip deflection showed a similar trend and 2NCMB exhibited the lowest roughness and highest tip deflection. However, the results of consistency tests and AFM for ageing sensitivity of the bitumens are different, indicating that the addition of nano-clay has an effect on the modified bitumen but not on the unmodified bitumen. There is a high correlation between the results of consistency tests, surface roughness and tip deflection, which implies that AFM is able to identify any changes in the fluidity of the bitumen. However, the correlation between tip deflection and penetration is very weak.

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Section: Introductionmentioning

confidence: 99%

Determining the Effect of Ageing of Nano-Clay Modified Bitumen Using Atomic Force Microscopy

et al. 2021

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“…There are two modes of imaging: constant force and constant height. The constant force mode refers to using the feedback system to accurately control the probe during the scanning process, so that it moves up and down vertically and horizontally with the surface morphology of the sample, and keeps a constant force between the tip and the sample, so that the deformation of the micro-cantilever remains unchanged [ 87 , 88 ]. In addition, the constant height mode is to keep the distance between the tip and the sample constant during the plane scanning of the tip, and the detector directly measures the deformation in the z direction of the microcantilever to form the topography image.…”

Section: Afm Test On Asphalt Materialsmentioning

confidence: 99%

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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“…Likewise, a study by Yuan et al employed tapping mode in AFM at room temperature to determine that ageing led to a lower bonding force in the catana, peri, and para phases [51]. Another study by Garcia et al utilised contact and pulse force modes and discovered that bonding and stiffness increased with ageing [52]. Finally, these previous studies showcased that AFM investigations presented the complex interlocking of sawdust with bitumen, resulting in improved tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Exploring the chemical properties and microstructural characterisations of hybrid asphalt binders for enhanced performance

Sani,

Jaya,

Masri

et al. 2024

Preprint

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Approximately 3 billion metric tonnes of garbage involving industrial and agricultural waste is expected to be generated by 2030, posing a significant environmental hazard. Notably, recycling or reusing asphalt modification components (palm oil fuel ash (POFA), garnet waste, and sawdust) in pavement construction encounter ongoing challenges. This study comprehensively assessed the chemical characteristics and microstructure analysis of individual wastes and various hybrid asphalt binder mixtures incorporated with these components. The mixture consisted of asphalt grade 60/70 blended with varying amounts (0%, 3%, 6%, and 9%) of POFA, garnet waste, and sawdust. Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), and X-ray diffraction (XRD) analyses were also employed to examine the chemical compositions of the raw waste materials. Meanwhile, the microstructure properties of various hybrid asphalt binder mixtures were analysed utilising Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Consequently, this study presented that the correlation between the 6% POFA, 6% garnet waste, and 6% sawdust substantially impacted the chemical composition and morphology of the mixture. The findings of this study demonstrated that including POFA, garnet waste, and sawdust in a hybrid asphalt binder mixture could enhance performance and engineering properties.

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Methodology for estimating the modulus of elasticity of bitumen under different aging conditions by AFM

Cited by 16 publications

References 24 publications

Determining the Effect of Ageing of Nano-Clay Modified Bitumen Using Atomic Force Microscopy

Determining the Effect of Ageing of Nano-Clay Modified Bitumen Using Atomic Force Microscopy

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

Exploring the chemical properties and microstructural characterisations of hybrid asphalt binders for enhanced performance

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