Investigation on bitumen-epoxy interface in cold mixed epoxy bitumen using experimental observation and molecular dynamics simulation

Liu, Quan; Ding, Gongying; Zhang, Zeyu; Fu, Chaoliang; Oeser, Markus

doi:10.1016/j.conbuildmat.2021.124490

Cited by 24 publications

(10 citation statements)

References 35 publications

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“…At the same time, there is a change in parameters: pressure and temperature, both of the gas The process of determining the components of the working mixture was considered according to the "black box" method in the form of an energy balance calculation scheme (Figure 2). Studies were considered according to the developed methodology [11]. The nature of the mixing process in the developed laboratory unit allows us to reveal ways of determining the specific power when mixing components.…”

Section: Figurementioning

confidence: 99%

Innovative thermodynamic modeling for enhanced yeast dough mixing: energy perspectives and applications

Piddubnyi,

Sabadosh,

Mushtruk

et al. 2024

Potr. S. J. F. Sci.

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A thermodynamic model for the calculation of energy exchange in the chamber of a new mixer with effective use of structural and technological parameters of the mixing process without the necessary introduction of experimental data correlations in the distribution of fluid velocities is proposed, which determines the relevance of this direction of calculation with the perspective of its development. The purpose of the presented work is to determine the specific power by substantiating the effective mode parameters of the preparation of the mixture (dough) as a result of evaluating the thermodynamic energy parameters of the kneading process. The assessment was carried out by developing a methodology for determining specific costs for creating a viscous medium when mixing components, which allows you to establish the required power depending on the design and technological parameters of the new mixer. The considered principle of the proposed open-type thermodynamic system of the description of the working process of mixing made it possible to reveal and determine the ways of converting energy into useful work of interphase heat and mass transfer of a heterogeneous medium. In the conditions of circulation mixing with multiple mechanical effects on the mixture of components in the closed circuit of the cylindrical working chamber, which is an effective way to achieve homogeneity of the environment, it was possible to obtain an analytical determination of the specific work and power of the drive in the absence of a clear description of the model of the interconnection of components. The proposed thermodynamic description of the system's energy balance allows to perform only a few experiments. In general, the practical value of the given calculations is of practical importance for improving productivity and efficiency and minimizing energy consumption for the process while reducing the dynamic loads of the designed mixer.

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Section: Figurementioning

confidence: 99%

Innovative thermodynamic modeling for enhanced yeast dough mixing: energy perspectives and applications

Piddubnyi,

Sabadosh,

Mushtruk

et al. 2024

Potr. S. J. F. Sci.

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“…Although molecular dynamics simulation has not been involved in the field of thermal oxygen aging of epoxy asphalt, it has been applied to characterize the crosslinking behavior of epoxy asphalt. 28,29 Li et al 30,31 constructed molecular models of epoxy asphalt with different epoxy resin content, epoxy resin crosslinking degree and curing agent ratio based on the Perl language script, analyzed the thermodynamic performance and component distribution depend on epoxy asphalt molecular models. Results demonstrated that the addition of epoxy resin enhanced the low-temperature performance of epoxy asphalt and the compatibility between epoxy resin and asphalt.…”

Section: Intruductionmentioning

confidence: 99%

Research on the thermal oxygen aging mechanism of the composite curing system epoxy asphalt with different curing agent proportions on the molecular scale

Min

Shi

et al. 2023

J of Applied Polymer Sci

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To study the influence of the cross‐linking network on the thermal oxygen aging performance of the epoxy asphalt, the laser copolymerization microscopy, Fourier transform infrared spectroscopy and element analysis tests were used to characterize the changes in chemical components of epoxy asphalt with composite curing system during thermal oxygen aging. According to the changes in chemical components, the epoxy asphalt molecular models were constructed. The diffusion behavior of oxygen atoms was analyzed, the aging degree was determined. Moreover, the Tg and radial distribution function were calculated to determine the effect of aging on the low‐temperature performance and component distribution of epoxy asphalt. The results show that a proper proportion of curing agent helped to uniform distribution of the asphalt phase. The rise in anhydride curing agent content increased the density of crosslinking network, limited the diffusion of oxygen atoms, and contributed to the resistance of epoxy asphalt chemical components to thermal oxygen aging. However, the high proportion of anhydride aggravated the oxidation reaction of the asphalt phase due to the uneven coating of the asphalt phase. After thermal oxygen aging, the distribution of asphaltene and epoxy resin phase showed a concomitant phenomenon due to polarity adsorption.

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“…The interface model has been used to study the compatibility, self‐healing, and interface behavior of EA. Interface models typically required longer diffusion times 26‐31 …”

Section: Introductionmentioning

confidence: 99%

The effect of photooxidation aging on the cohesion and interfacial adhesion behavior of epoxy asphalt with a composite acidic curing system based on molecular simulation

Min,

Li,

Chen

et al. 2024

J of Applied Polymer Sci

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This paper investigated the cross‐linking network structure of epoxy asphalt (EA) with the different ratio of composite curing agents, and further determined the effect of photooxidation aging on the tensile and interfacial adhesion behavior of EA with different cross‐linking network structures through molecular simulation. Based on the molecular models of EA and the interface model between EA and aggregate, the crosslinking network structural characteristics and tensile mechanical behavior were determined. The interfacial adhesion behavior and the mechanization were further studied. The results indicate that 20‐EA and 6‐EA have an epoxy resin cross‐linked network with uniform pore structure and phase distribution. 2‐EA showed a denser cross‐linking network and uneven aggregation phenomenon. Photooxidative aging alleviated the aggregation phenomenon. A dense cross‐linking network improved the tensile strength and the ability of tensile performance to resist photooxidation aging. The interface of EA‐quartz exhibited higher adhesion strength than EA‐calcite due to the closer distance and stronger nonbonding interactions between EA and quartz. The low anhydride content and photooxidation aging made EA approach to the aggregate interface, increasing nonbonding interaction and interfacial adhesion strength. In addition, quartz aggregates were more suitable for application in EA mixtures due to the higher interfacial adhesion strength and lower water sensitivity.

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Investigation on bitumen-epoxy interface in cold mixed epoxy bitumen using experimental observation and molecular dynamics simulation

Cited by 24 publications

References 35 publications

Innovative thermodynamic modeling for enhanced yeast dough mixing: energy perspectives and applications

Innovative thermodynamic modeling for enhanced yeast dough mixing: energy perspectives and applications

Research on the thermal oxygen aging mechanism of the composite curing system epoxy asphalt with different curing agent proportions on the molecular scale

The effect of photooxidation aging on the cohesion and interfacial adhesion behavior of epoxy asphalt with a composite acidic curing system based on molecular simulation

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