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The fire behaviour of an inner lining for tunnels
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Fire Research, Brandmotstånd.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Fire Research, Brandmotstånd.
2015 (English)Report (Other academic)
Abstract [en]

The fire resistance of a sprayed concrete inner lining for tunnels has been investigated experimentally and theoretically. During the initial first test on a section of nominal size 5 × 3 × 0.12 m3 the specimen maintained the integrity and insulation criteria during 180 minutes fire exposure with the Hydrocarbon fire curve. Also during the second test, where two specimens of half the size were tested, the integrity and insulation criteria’s were maintained but during this test the fire exposure was reduced during a period of the test due to a technical malfunction. The thermal properties of the sprayed concrete was shown by TPS measurements to be in the span of the values found in the Eurocode. Further on, calculations based on the Eurocode model including temperature dependent stress/strain was shown to give results on the safe side compared with measurements performed during the test. Stresses calculated in the supporting steel bars were 2 to 3 times higher than the measurements which is conservative. Key words: tunnels, fire, sprayed concrete

Place, publisher, year, edition, pages
2015.
Series
SP Rapport, ISSN 0284-5172 ; 2015:33
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-5262Local ID: 23601ISBN: 978-91-88001-62-7 (print)OAI: oai:DiVA.org:ri-5262DiVA: diva2:962903
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2017-02-08Bibliographically approved

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CiteExportLink to record
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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
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