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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/8JCH1002" target="_blank" >8JCH1002: Sdružené rejuvenační účinky u zestárnutého asfaltového pojiva z asfaltového recyklátu s využitím aditiv z bio-odpadů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Construction and Building Materials

ISSN

0950-0618

e-ISSN

1879-0526

Svazek periodika

295

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

000663782700010

EID výsledku v databázi Scopus

2-s2.0-85107132003