Present limitations of models for predicting chloride ingress into reinforced concrete structures
(2006) International Workshop NUCPERF 2006: Corrosion and Long Term Performance of Concrete in NPP and Waste Facilities In Journal de Physique IV 136. p.123-130- Abstract
- Models to predict chloride ingress are numerous but all of them have serious limitations that restrict the present use for long term predictions. An overview is given of the fundamental differences between various models, from those based on Fick's 2nd with constant or time-dependent diffusion coefficients and surface chloride contents, to those based on chloride transport equations with or without a multi-species approach. The key advantages and limitations of each type of model are identified and the research needs are summarized and discussed. The three main limitations are shown to be (i) the lack of understanding the time-dependency of the apparent chloride diffusion coefficients, (ii) the lack of good long-term data, the chloride... (More)
- Models to predict chloride ingress are numerous but all of them have serious limitations that restrict the present use for long term predictions. An overview is given of the fundamental differences between various models, from those based on Fick's 2nd with constant or time-dependent diffusion coefficients and surface chloride contents, to those based on chloride transport equations with or without a multi-species approach. The key advantages and limitations of each type of model are identified and the research needs are summarized and discussed. The three main limitations are shown to be (i) the lack of understanding the time-dependency of the apparent chloride diffusion coefficients, (ii) the lack of good long-term data, the chloride content increase with time close to the exposed surface and (iii) the difficulties in quantifying the boundary conditions for sophisticated ingress models. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/617116
- author
- Nilsson, Lars-Olof LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Surface chloride content, Chloride transport equations
- in
- Journal de Physique IV
- volume
- 136
- pages
- 123 - 130
- publisher
- EDP Sciences
- conference name
- International Workshop NUCPERF 2006: Corrosion and Long Term Performance of Concrete in NPP and Waste Facilities
- conference location
- Cadarache, France
- conference dates
- 2006-03-27 - 2006-03-30
- external identifiers
-
- wos:000242777700013
- scopus:33846627618
- ISSN
- 1155-4339
- DOI
- 10.1051/jp4:2006136013
- language
- English
- LU publication?
- yes
- id
- e11ec94a-5f70-4e26-95fa-42b3663e38b1 (old id 617116)
- date added to LUP
- 2016-04-01 11:50:47
- date last changed
- 2022-01-30 03:59:14
@article{e11ec94a-5f70-4e26-95fa-42b3663e38b1,
abstract = {{Models to predict chloride ingress are numerous but all of them have serious limitations that restrict the present use for long term predictions. An overview is given of the fundamental differences between various models, from those based on Fick's 2nd with constant or time-dependent diffusion coefficients and surface chloride contents, to those based on chloride transport equations with or without a multi-species approach. The key advantages and limitations of each type of model are identified and the research needs are summarized and discussed. The three main limitations are shown to be (i) the lack of understanding the time-dependency of the apparent chloride diffusion coefficients, (ii) the lack of good long-term data, the chloride content increase with time close to the exposed surface and (iii) the difficulties in quantifying the boundary conditions for sophisticated ingress models.}},
author = {{Nilsson, Lars-Olof}},
issn = {{1155-4339}},
keywords = {{Surface chloride content; Chloride transport equations}},
language = {{eng}},
pages = {{123--130}},
publisher = {{EDP Sciences}},
series = {{Journal de Physique IV}},
title = {{Present limitations of models for predicting chloride ingress into reinforced concrete structures}},
url = {{http://dx.doi.org/10.1051/jp4:2006136013}},
doi = {{10.1051/jp4:2006136013}},
volume = {{136}},
year = {{2006}},
}