Bond-slip model of corroded plain round bars in low-strength concrete under cyclic and monotonic loading

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F25%3A39923901" target="_blank" >RIV/00216275:25510/25:39923901 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.engfailanal.2024.108966" target="_blank" >https://doi.org/10.1016/j.engfailanal.2024.108966</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engfailanal.2024.108966" target="_blank" >10.1016/j.engfailanal.2024.108966</a>

Result language

angličtina

Original language name

Bond-slip model of corroded plain round bars in low-strength concrete under cyclic and monotonic loading

Original language description

The effect of corrosion on the overall behavior of beam-type bond-slip samples constructed from low-strength concrete and plain round bars was examined in this study. First, a set of nominally identical specimens underwent testing under both monotonic and cyclic loading, and subsequently, the bond-slip interaction was assessed for each individual sample. The observed failure mode for plain round bars was direct pullout without concrete splitting apart, characterized by the loss of cohesion between the rebar and the adjacent concrete surface. Then, an analytical relationship was established by fitting a curve to the average experimental data using the method of least squares. Corrosion-degradation in the bond stress was considered by incorporating an exponential component into the equation of the reference bond-slip curve (i.e., null corrosion). Besides, the degradation in bond strength was predicted as a function of corrosion level, which is in the form of an exponential curve. The maximum surface crack width, an easily quantified variable on-site, was correlated with the bond strength of corroded bars. The regression analysis successfully established the optimal relationship between the maximum surface crack width and the corrosion level in an exponential form as well. Notably, the majority of the data in all cases fell within the 95% confidence interval.

Czech name

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Czech description

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Type

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

CEP classification

—

OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Engineering Failure Analysis

ISSN

1350-6307

e-ISSN

1873-1961

Volume of the periodical

167

Issue of the periodical within the volume

January 2025

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

108966

UT code for WoS article

001338769900001

EID of the result in the Scopus database

2-s2.0-85206458687