Performance of burning and strength of wood against low radiation: Fundamental research for promotion of gymnasiums with roofs supported by wooden beams

Koji Harada, Masafumi Inoue, Kei Tanaka, Noboru Nakamura, Motoyoshi Ikeda, Naoyuki Itagaki

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, the ignitability tests and cone calorimeter tests at the incident heat fluxes of less than 20 kW/m2 for 20~30 minutes were conducted. The results indicated the wood were not ignited below 13 kWAm2. And the fire was put out automatically even if the wood had been ignited. But the darkening was observed on the surface of the samples even if the samples were not ignited and the temperature at the depth of 5mm from the bottom of the char layer in some of the test samples reached more than 180C. Therefore the static bending tests and impact tests for the wood exposed to the temperature at 120C,150C or 180C for 20 minutes were carried out to investigate the thermal degradation characteristics of wood, in consequence, the structural performance of wood would be recovered when the wood samples were cooled down later after they had been exposed to the temperature at 120C or 150C.

Original languageEnglish
Pages (from-to)1491-1500
Number of pages10
JournalJournal of Structural and Construction Engineering
Volume81
Issue number727
DOIs
Publication statusPublished - Sep 2016
Externally publishedYes

Keywords

  • Fire resistance verification method
  • Ignition condition
  • Localized fire
  • Self-extinction
  • Structural performance degradation

ASJC Scopus subject areas

  • Architecture
  • Building and Construction

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