Fatigue resistance of concrete revisited: Wide range data from low-cycle to high-cycle and influence of aggregate on fatigue lifetimes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F26%3A0199930" target="_blank" >RIV/00216305:26110/26:0199930 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0958946525004767?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0958946525004767?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cemconcomp.2025.106394" target="_blank" >10.1016/j.cemconcomp.2025.106394</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue resistance of concrete revisited: Wide range data from low-cycle to high-cycle and influence of aggregate on fatigue lifetimes

Popis výsledku v původním jazyce

This paper presents the outcome of an experimental study focused on the investigation of the fatigue fracture behaviour of high-performance concrete (HPC) with granite aggregates under three-point bending. Notched beam specimens were tested under static, low-cycle, and high-cycle regimes to obtain load-CMOD responses, S-N curves, crack propagation and damage accumulation. Key parameters were derived from CMOD-controlled tests, Paris' law fitting, and a compliance-based crack growth approach. Post-test microscopy was used to characterise the fracture process zone (FPZ). The results reveal a cohesive-like law governing the cyclic damage evolution, independent of the initial notch depth. Aggregate bridging and confinement effects from large granite aggregates (Dmax = 22 mm) significantly influenced crack trajectories, delaying failure and enhancing fatigue life. Fatigue crack growth analysis identified distinct propagation phases and multiple apparent threshold stress intensity factors (KI,th), closely linked to the material's meso-structure. The findings suggest that despite accumulated damage, final failure occurs when local conditions reach the fracture toughness of the unfatigued material. This work provides new insights into the role of aggregate type in fatigue performance and proposes a robust methodology for correlating static and cyclic fracture parameters in conventional HPC.

Název v anglickém jazyce

Fatigue resistance of concrete revisited: Wide range data from low-cycle to high-cycle and influence of aggregate on fatigue lifetimes

Popis výsledku anglicky

This paper presents the outcome of an experimental study focused on the investigation of the fatigue fracture behaviour of high-performance concrete (HPC) with granite aggregates under three-point bending. Notched beam specimens were tested under static, low-cycle, and high-cycle regimes to obtain load-CMOD responses, S-N curves, crack propagation and damage accumulation. Key parameters were derived from CMOD-controlled tests, Paris' law fitting, and a compliance-based crack growth approach. Post-test microscopy was used to characterise the fracture process zone (FPZ). The results reveal a cohesive-like law governing the cyclic damage evolution, independent of the initial notch depth. Aggregate bridging and confinement effects from large granite aggregates (Dmax = 22 mm) significantly influenced crack trajectories, delaying failure and enhancing fatigue life. Fatigue crack growth analysis identified distinct propagation phases and multiple apparent threshold stress intensity factors (KI,th), closely linked to the material's meso-structure. The findings suggest that despite accumulated damage, final failure occurs when local conditions reach the fracture toughness of the unfatigued material. This work provides new insights into the role of aggregate type in fatigue performance and proposes a robust methodology for correlating static and cyclic fracture parameters in conventional HPC.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2026

Kód důvěrnosti údajů

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

Název periodika

CEMENT & CONCRETE COMPOSITES

ISSN

0958-9465

e-ISSN

1873-393X

Svazek periodika

—

Číslo periodika v rámci svazku

166

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

—

Kód UT WoS článku

001621582400001

EID výsledku v databázi Scopus

2-s2.0-105021870007