Investigating the impact of calcium sulfate whisker on the microscopic properties of basalt fiber-reinforced asphalt using molecular dynamics simulation

Wang, Fuyu; Zou, Gaoyuan; Xu, Li; Fan, Shihao

doi:10.1016/j.conbuildmat.2024.135643

Cited by 6 publications

(1 citation statement)

References 54 publications

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“…In order to enhance the durability of asphalt pavement, the method of extending the service life of asphalt pavement by adding fibers into asphalt mixture has been widely used [1], [2]. Among them, the basalt fiber (BF) has good mechanical performance and resistance to high temperature and corrosion, which can be added into asphalt mixture to play the role of adsorption, reinforcement, and prevention of crack expansion to reduce the degree of asphalt concrete pavement damage [3], [4], [5]. Y.J.…”

Section: Introductionmentioning

confidence: 99%

Study on the performance of ATP grafting basalt fiber based on the plant root bionic idea and its adsorption characteristics with asphalt

YANG,

LIU,

LIU

et al. 2024

Preprint

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Nano-attapulgite (ATP) is a layered silicate mineral with abundant reserves, large specific surface area, and low cost. The unique structure of ATP has attracted wide attention in the field of adsorption. In this study, a preparation technology of ATP grafting basalt fiber (BF) was proposed by chemical grafting method based on the idea of plant root bionics. The optimal preparation process of ATP grafting BF was determined through the tests of asphalt absorption performance, thermal stability performance, and segregation dispersion performance. The mechanism of ATP grafting BF was analyzed by micro-morphology, functional group changes, and elemental composition. Finally, the adsorption performance of ATP grafting BF was investigated on the basis of adsorption kinetics model and molecular dynamics simulation. The study results indicated that ATP-BFHCl had better compatibility and wettability with asphalt. The quasi-second-order kinetic equation could better fit the adsorption process of ATP-BFHCl on asphaltene, which indicated that ATP-BFHCl adsorbed asphaltene with chemisorption or ion exchange. The diffusion coefficient and diffusion activation energy of the saturate and the aromatic were larger, indicating a smaller molecular weight and faster movement, and lightweight components of asphalt are more easily adsorbed on the surface of ATP. The diffusion activation energy of asphaltene is the smallest and the reaction is the easiest to take place, which indicates that it is the first to react during temperature increase. The research results can provide a theoretical basis and technical support for BF surface treatment technology.

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Section: Introductionmentioning

confidence: 99%

Study on the performance of ATP grafting basalt fiber based on the plant root bionic idea and its adsorption characteristics with asphalt

YANG,

LIU,

LIU

et al. 2024

Preprint

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Molecular Components and Molecular Modelling for Asphalt: A Review

Wang,

Zhou,

Zhang

et al. 2024

Advanced Physics Research

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Asphalt is a complex, heterogeneous organic mixture increasingly used in modern pavement. With the rising traffic load and sustainable strategies, developing high‐performance asphalt materials becomes crucial, which relies on the understanding of the relationship between the physical chemical properties of asphalt and its constituent molecular components. This work aims to review the progress on the identification of asphalt molecular components, as well as different types of molecules being employed in various molecular dynamics simulations to assess the physical properties of asphalt. The state‐of‐the‐art techniques for the separation of molecular components for asphalt materials are first introduced, followed by common characterization techniques for asphalt molecules and microstructural features, which serve as the foundations for molecular modeling for asphalt materials. Various asphalt molecular models being employed in molecular dynamics simulations are summarised, covering pristine asphalt, modified asphalt, and aged asphalt. Different factors that impact the physical properties of asphalt as uncovered from these simulations are also discussed. This work provides a comprehensive overview on the molecular components of asphalt and the corresponding modeling as atomistic scale, which can guide the preparation of asphalt materials with on‐demand properties for sustainable development.

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Study on design optimization, road performance verification and preparation process selection of hybrid fiber reinforced asphalt mixture composite

He,

Zhang,

Zhao

et al. 2024

Construction and Building Materials

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Investigating the impact of calcium sulfate whisker on the microscopic properties of basalt fiber-reinforced asphalt using molecular dynamics simulation

Cited by 6 publications

References 54 publications

Study on the performance of ATP grafting basalt fiber based on the plant root bionic idea and its adsorption characteristics with asphalt

Study on the performance of ATP grafting basalt fiber based on the plant root bionic idea and its adsorption characteristics with asphalt

Molecular Components and Molecular Modelling for Asphalt: A Review

Study on design optimization, road performance verification and preparation process selection of hybrid fiber reinforced asphalt mixture composite

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