1617181920212219 of 25
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
Assessment of Fire Exposed Concrete with Full-field Strain Determination and Predictive Modelling
RISE - Research Institutes of Sweden, Safety and Transport, Safety. (Mechanics Research)ORCID iD: 0000-0002-0033-1841
RISE - Research Institutes of Sweden, Safety and Transport, Safety. (Mechanics Research)ORCID iD: 0000-0002-3481-1368
2019 (English)Conference proceedings (editor) (Refereed)
Abstract [en]

A condition assessment of civil engineering structures is typically performed after the occurrence of a fire incident to determine the remedial actions required out of a structural point of view. A condition assessment is based on the mapping of damage on the given structure, which is traditionally executed via methods that yield indirect results related to surface and/or geometric properties. To be able to predict the accurate fire resistance performance of a given structure, it is most suitable to apply a mapping method which can be directly coupled to the change in material properties of concrete at high temperatures. The aim of this study is to explore the potential of applying an innovative damage mapping methodology directly coupled to the change in material properties of concrete at high temperatures. This methodology consists of optical full-field strain measurements based on Digital Image Correlation (DIC) coupled with a predictive model based on finite-element analysis (FEA). An experimental study was firstly conducted to expose concrete slabs to a standard fire curve. Subsequently, compression tests were performed on drilled cores taken from the damaged induced specimens, all while optically measuring the full-field strain on a specimen surface. As a preliminary step, an FE model of a fire exposed core was developed based on input data from standard temperature-dependent properties. The analysis consisted of a sequentially coupled thermal stress analysis to solve the multiphysics problem. The model was able to capture the temperature distribution in the concrete with enough certainty given the choice of input data. The resulting strain along the height of the core was also comparable to the experimental optical strain measurements, particularly as the distance increased from the fire exposed surface. These results can be practical when assessing the required strengthening actions to restore the load carrying capacity and durability of the concrete structure.

Place, publisher, year, edition, pages
Bayonne, France: International Association of Fracture Mechanics for Concrete and Concrete Structures , 2019. , p. 10
Keywords [en]
concrete, fire, damage assessment, digital image correlation, finite element analysis
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:ri:diva-39952DOI: 10.21012/FC10.232063OAI: oai:DiVA.org:ri-39952DiVA, id: diva2:1353571
Conference
10th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-X)
Available from: 2019-09-23 Created: 2019-09-23 Last updated: 2019-09-27Bibliographically approved

Open Access in DiVA

fulltext(765 kB)2 downloads
File information
File name FULLTEXT01.pdfFile size 765 kBChecksum SHA-512
ede63f2a4bb34e50d088149d2a5f8d5d0b391f88ce6eea63cf2e1eef49fcf99d12779d119ba699cf21438314d94d3fe332a93783c1d20b59f11ce865d7c07fb4
Type fulltextMimetype application/pdf

Other links

Publisher's full texthttp://framcos.org/FraMCoS-10/Full-Papers/232063.pdf

Authority records BETA

Williams Portal, NatalieFlansbjer, Mathias

Search in DiVA

By author/editor
Williams Portal, NatalieFlansbjer, Mathias
By organisation
Safety
Other Civil Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 2 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 14 hits
1617181920212219 of 25
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
v. 2.35.7