Publication detail

Model uncertainty in diffusion coefficient for chloride ingress into concrete

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

Original Title

Model uncertainty in diffusion coefficient for chloride ingress into concrete

Type

conference paper

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

17. 8. 2021

Publisher

Elsevier

Location

AMSTERDAM

ISBN

2452-3216

Periodical

Procedia Structural Integrity

Year of study

31

Number

1

State

Republic of Italy

Pages from

147

Pages to

153

Pages count

7

URL

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

Full text in the Digital Library

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"
}