Discussion on the bitumen fatigue parameters interpretation for Linear Amplitude Sweep and time-sweep tests: Insights from ageing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00380370" target="_blank" >RIV/68407700:21110/25:00380370 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.conbuildmat.2025.139941" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2025.139941</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2025.139941" target="_blank" >10.1016/j.conbuildmat.2025.139941</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Discussion on the bitumen fatigue parameters interpretation for Linear Amplitude Sweep and time-sweep tests: Insights from ageing

Popis výsledku v původním jazyce

The bitumen ageing phenomenon is a crucial factor determining the fatigue cracking resistance of asphalt mixtures. Therefore, a reliable representation of changes in the fatigue life of bitumen binders with ageing is fundamental for flexible pavement performance prediction. This study aims to investigate and select the Linear Amplitude Sweep (LAS) test conditions in terms of rational fatigue life predictions of bitumen binders based on the results of time-sweep (TS) fatigue tests performed in Dynamic Shear Rheometer (DSR). Testing was performed on two neat bitumen binders (35/50, 50/70) and one polymer-modified bitumen (PmB 25/55–60) in the unaged, short-term aged (RTFOT), and long-term aged (PAV) states. The Zero-Slope Strain (ZSS) and Limit Strain (LS) levels were introduced to the data analysis to determine a common strain amplitude to be applied in fatigue life calculations based on LAS testing. Correlations between the fatigue life values obtained in TS (Nf,TS) and LAS (Nf,LAS) tests were analysed considering the influence of strain amplitude, temperature, and the degree of ageing. The statistical analysis confirmed that given the specific LAS test conditions and calculation parameters, the relationship between the Nf,LAS and Nf,TS values can be reliably described, taking into account the impact of ageing processes.

Název v anglickém jazyce

Discussion on the bitumen fatigue parameters interpretation for Linear Amplitude Sweep and time-sweep tests: Insights from ageing

Popis výsledku anglicky

The bitumen ageing phenomenon is a crucial factor determining the fatigue cracking resistance of asphalt mixtures. Therefore, a reliable representation of changes in the fatigue life of bitumen binders with ageing is fundamental for flexible pavement performance prediction. This study aims to investigate and select the Linear Amplitude Sweep (LAS) test conditions in terms of rational fatigue life predictions of bitumen binders based on the results of time-sweep (TS) fatigue tests performed in Dynamic Shear Rheometer (DSR). Testing was performed on two neat bitumen binders (35/50, 50/70) and one polymer-modified bitumen (PmB 25/55–60) in the unaged, short-term aged (RTFOT), and long-term aged (PAV) states. The Zero-Slope Strain (ZSS) and Limit Strain (LS) levels were introduced to the data analysis to determine a common strain amplitude to be applied in fatigue life calculations based on LAS testing. Correlations between the fatigue life values obtained in TS (Nf,TS) and LAS (Nf,LAS) tests were analysed considering the influence of strain amplitude, temperature, and the degree of ageing. The statistical analysis confirmed that given the specific LAS test conditions and calculation parameters, the relationship between the Nf,LAS and Nf,TS values can be reliably described, taking into account the impact of ageing processes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GF22-04047K" target="_blank" >GF22-04047K: Pokročilé postupy pro stanovení a porozumění únavovému chování asfaltových směsí</a><br>

Návaznosti

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

Rok uplatnění

2025

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

463

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

001407497700001

EID výsledku v databázi Scopus

2-s2.0-85215360212