RT info:eu-repo/semantics/article
T1 Effect of Fiber Orientation on the Fatigue Behavior of Steel Fiber-Reinforced Concrete Specimens by Performing Wedge Splitting Tests and Computed Tomography Scanning
A1 González Cabrera, Dorys Carmen
A1 Mena Alonso, Álvaro
A1 Mínguez Algarra, Jesús
A1 Martínez Martínez, José Antonio
A1 Vicente Cabrera, Miguel Ángel
K1 Fiber-reinforced concrete
K1 CT-scan technology
K1 Crack petterns
K1 Wedge splitting test
K1 Fatigue creep curve
K1 Ingeniería civil
K1 Civil engineering
K1 Construcción
K1 Construction
K1 Materiales de construcción
K1 Building materials
AB This paper shows the relationship, in steel fiber-reinforced concrete, between fiber orientation and fatigue response through the combined use of computed tomography (CT), digital image processing (DIP) software and wedge splitting test (WST). The WST cubes were extracted from conventional 150 × 150× 600 concrete prisms and a groove and notch were carved on different faces in such a way that in half of the test specimens the fibers are oriented mostly perpendicular to the breaking surface and, in the other half, the fibers are mostly oriented parallel to the breaking surface. Fiber orientation was obtained using a CT device and DIP software from a miniprism extracted from the previously mentioned concrete prisms. The results show that there is a strong correlation between the crack-sewing fiber orientation on the one hand and fatigue life and crack opening rate per cycle on the other hand. Cubes with a higher percentage of fibers perpendicular to the crack surface (i.e., with a higher efficiency index) show a longer fatigue life and a lower crack opening rate per cycle, while cubes with a lower efficiency index show a shorter fatigue life and a higher crack opening rate per cycle.
PB Springer Nature
YR 2024
FD 2024-01
LK http://hdl.handle.net/10259/8665
UL http://hdl.handle.net/10259/8665
LA eng
NO This investigation was supported by the following funder: Ministerio de Ciencia e Innovación, PID2019-110928RB-C32, Spain.
DS Repositorio Institucional de la Universidad de Burgos
RD 09-may-2024