Research on the self-healing behavior of asphalt mixed with healingagents based on molecular dynamics method

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00350092" target="_blank" >RIV/68407700:21110/21:00350092 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.conbuildmat.2021.123430" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2021.123430</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.conbuildmat.2021.123430" target="_blank" >10.1016/j.conbuildmat.2021.123430</a>

Result language
angličtina
Original language name
Research on the self-healing behavior of asphalt mixed with healingagents based on molecular dynamics method
Original language description
Molecular dynamics is used to simulate the self-healing process of asphalts mixed with a healing agent.Sulfoxide functional groups were introduced into the virgin asphalt to produce a short-term-aged asphaltmodel. The model is validated by comparing density, diffusion coefficient, solubility parameter, and vis-cosity with real measurements. Plant oil and Aromatic oil are chosen as typical healing agents. The molec-ular models of asphalt and healing agent are integrated into a micro-crack model, and the healing processis simulated with molecular dynamics. The results show that Plant oil is a better choice for improving thehealing rate of virgin asphalt, while Aromatic oil is better for improving the healing rate of short-term-aged asphalt. The higher the temperature is, the better effect the healing agent will have on the asphalt.Healing is maximized above 15°C for virgin asphalt and above 45°C for short-term-aged asphalt.Molecular simulations show that the healing process depends on the diffusion of the healing agentand asphalt into the micro-crack. After the crack is filled, bitumen and oil molecules continue to mix.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20101 - Civil engineering

Project
<a href="/en/project/8JCH1002" target="_blank" >8JCH1002: Compound rejuvenating effects on aged bitumen from reclaimed asphalt material by bio-waste additives</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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