Temperature Dependence of Adhesive Strength and Fire Resistance of Structural Glued Laminated Timber Beams
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- Harada Toshiro
- Forestry and Forest Products Research Institute
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- Miyatake Atsushi
- Forestry and Forest Products Research Institute
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- Kamikawa Daisuke
- Forestry and Forest Products Research Institute
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- Hiramatsu Yasushi
- Forestry and Forest Products Research Institute
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- Shindo Kenta
- Forestry and Forest Products Research Institute
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- Inoue Akio
- Forestry and Forest Products Research Institute
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- Miyamoto Kohta
- Forestry and Forest Products Research Institute
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- Tohmura Shin-ichiro
- Forestry and Forest Products Research Institute
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- Hatano Yasunori
- Forestry and Forest Products Research Institute
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- Miyabayashi Masayuki
- T. E. Consulting Inc.
Bibliographic Information
- Other Title
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- 木材の接着強さの温度依存性と構造用集成材はりの耐火性能
- モクザイ ノ セッチャクツヨサ ノ オンド イソンセイ ト コウゾウヨウ シュウセイザイハリ ノ タイカ セイノウ
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Description
In order to discuss how adhesive strength at elevated temperature affects the fire resistance of glued laminated timber (GLT), structural GLT beams using adhesives of phenol-resorcinol-formaldehyde (PRF) resin, aqueous polymer isocyanate (water based polymer-isocyanate, API) resin or polyvinyl acetate (PVAc) resin were made and their fire performances were evaluated. The PRF-GLT beams and API-GLT beams exhibited the fire performance required for the 45-minute fire test. However, the PVAc-GLT beams failed to withstand the fire test because the laminae separated earlier than PRF-GLT and API-GLT. The adhesive shear strengths in laminated wood at elevated temperature were evaluated. They decreased with rising temperature, and were found to be RF > API > PVAc at 100°C, 150°C and 200°C. In particular, PVAc decreased drastically, where the adhesive strength at 150°C was almost null. The fire resistance degradation of GLT beams is dominated by the loss of laminae, and depends on the adhesive shear strength in laminated wood. If the adhesive shear strength at 200°C is enough to keep laminae from separating, the GLT beam specimens are expected to exhibit 45-minute quasi-fireproof performance.
Journal
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- Mokuzai Gakkaishi
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Mokuzai Gakkaishi 59 (4), 219-226, 2013
The Japan Wood Research Society
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Keywords
Details 詳細情報について
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- CRID
- 1390001206353241984
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- NII Article ID
- 10031187840
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- NII Book ID
- AN00240329
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- COI
- 1:CAS:528:DC%2BC3sXhsFajsbzK
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- ISSN
- 18807577
- 00214795
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- NDL BIB ID
- 024812778
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed