Detail publikace

Model uncertainty in diffusion coefficient for chloride ingress into concrete

KONEČNÝ, P. HORŇÁKOVÁ, M. LEHNER, P. ROVNANÍKOVÁ, P. SÝKORA, M.

Originální název

Model uncertainty in diffusion coefficient for chloride ingress into concrete

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Diffusion coefficient for the chloride ingress into concrete is a key parameter describing the resistance against chloride penetration into the concrete. Consequently, it is an important aspect of the durability of reinforced concrete structures endangered by chloride-induced corrosion. The diffusion coefficient may be used for the direct assessment of the concrete quality with respect to chloride ingress and with respect to the numerical analysis of the durability of reinforced concrete structures. To estimate the diffusion coefficient, the computation based on the Second Fick's Law model and approximation of chloride profile from destructive penetration tests is usually utilised. Semi-destructive or non-destructive electrochemical tests provide estimates of the diffusion coefficient. The study reveals that (a) the resistivity readings provide a higher estimate for diffusion coefficient in comparison to short-time field exposures that seem to be associated with large uncertainty for exposure periods shorter than one year; (b) electrical resistivity measurements show significantly lower variation com-pared to the estimates based on chloride profiles. (C) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID 2020 Organizers.

Klíčová slova

diffusion coefficient; chloride ingress; reinforced concrete structure; electro-chemical tests; calibration

Autoři

KONEČNÝ, P.; HORŇÁKOVÁ, M.; LEHNER, P.; ROVNANÍKOVÁ, P.; SÝKORA, M.

Vydáno

17. 8. 2021

Nakladatel

Elsevier

Místo

AMSTERDAM

ISSN

2452-3216

Periodikum

Procedia Structural Integrity

Ročník

31

Číslo

1

Stát

Italská republika

Strany od

147

Strany do

153

Strany počet

7

URL

https://www.sciencedirect.com/science/article/pii/S2452321621000263

Plný text v Digitální knihovně

http://hdl.handle.net/11012/204057

BibTex

@inproceedings{BUT177198,
  author="Petr {Konečný} and Marie {Horňáková} and Petr {Lehner} and Pavla {Rovnaníková} and Miroslav {Sýkora}",
  title="Model uncertainty in diffusion coefficient for chloride ingress into concrete",
  booktitle="Procedia Structural Integrity",
  year="2021",
  journal="Procedia Structural Integrity",
  volume="31",
  number="1",
  pages="147--153",
  publisher="Elsevier",
  address="AMSTERDAM",
  doi="10.1016/j.prostr.2021.03.023",
  issn="2452-3216",
  url="https://www.sciencedirect.com/science/article/pii/S2452321621000263"
}