Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Estimation of chloride ingress in uncracked and cracked concrete using measured surface concentrations
KTH, Superseded Departments, Civil and Architectural Engineering.ORCID iD: 0000-0002-1526-9331
2002 (English)In: ACI Materials Journal, ISSN 0889-325X, E-ISSN 1944-737X, Vol. 99, no 1, 27-36 p.Article in journal (Refereed) Published
Abstract [en]

The service life of repaired concrete bridge decks with chloride-initiated corrosion is estimated using real environmental loads. Major field data are presented from measurements of the surface concentration (SC) of chloride ions in concrete overlays in deicing environments. The diffusion coefficients (DC) of the overlay and the old concrete were estimated with different methods, used thereafter with the measured SC and the measured concrete covers (lower 5% percentile), to predict the service life with numerical methods. Numerical methods were used due to the varying SC, and because the concrete overlay and the old concrete bridge deck had different DC, and because the composite deck could hardly be treated as a semi-infinite body. The effect of chloride ions that accumulated at the soffit had to be considered for thin bridge decks. Both uncracked and cracked concrete were considered. The effect of the SC type on the service life was limited. Stopping the use of deicing agents was found to be beneficial for up to 30 to 40 years. Cracks increased the chloride ingress rate, and the effect increased considerably with high DC in the old concrete.

Place, publisher, year, edition, pages
2002. Vol. 99, no 1, 27-36 p.
Keyword [en]
concrete, deicer, overlay, diffusion
Identifiers
URN: urn:nbn:se:kth:diva-21313ISI: 000173838900004OAI: oai:DiVA.org:kth-21313DiVA: diva2:340011
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Silfwerbrand, Johan

Search in DiVA

By author/editor
Silfwerbrand, Johan
By organisation
Civil and Architectural Engineering
In the same journal
ACI Materials Journal

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 55 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf