Flexural behavior of hollow HPC beams with cross-wound CFRP shear reinforcement

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F25%3A00377386" target="_blank" >RIV/68407700:21720/25:00377386 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.engstruct.2024.119055" target="_blank" >https://doi.org/10.1016/j.engstruct.2024.119055</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engstruct.2024.119055" target="_blank" >10.1016/j.engstruct.2024.119055</a>

Result language

angličtina

Original language name

Flexural behavior of hollow HPC beams with cross-wound CFRP shear reinforcement

Original language description

This article presents cross-wound carbon fiber-reinforced polymer (CFRP) shear reinforcement of hollow high-performance concrete (HPC) beams. A removable mold used to form the core of the hollow elements was utilized for reinforcement positioning. Basalt fiber-reinforced polymer (BFRP) tensile reinforcement was attached to the removable mold by spacers, and the CFRP shear reinforcement was cross-wound around the BFRP bars from carbon rovings oriented at ± 45° from the longitudinal axis. The flexural, and shear performance of the hollow HPC structural beams was evaluated. To set a comparison, specimens without any shear reinforcement and specimens made of HPC with 80 kg/m3 of dispersed short steel fibers were tested alongside them. The shear capacity of the specimens with CFRP reinforcement evaluated in a three-point bending test was up to 73 % higher compared to those with dispersed steel fibers. The cross-wound CFRP reinforcement also complemented the BFRP tensile reinforcement, as for specimens that failed in tension, the ones with CFRP reinforcement achieved 25 % higher ultimate flexural strength compared to those with dispersed steel fibers. The inclined CFRP mesh affected the orientation of the critical shear crack resulting in higher shear capacity at a longer shear span. Direct effect of the longitudinal reinforcement ratio on the shear capacity was observed.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/GA24-12052S" target="_blank" >GA24-12052S: Spolupůsobení obálky z textilního betonu a jádra z betonu s recyklovaným kamenivem</a><br>

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

Engineering Structures

ISSN

0141-0296

e-ISSN

1873-7323

Volume of the periodical

322

Issue of the periodical within the volume

Part A

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

—

UT code for WoS article

001330257800001

EID of the result in the Scopus database

2-s2.0-85205253916