FIRE SAFETY OF WOODEN WALLS FILLED WITH BINDER-LESS WOOD SHAVING INSULATION PANELS
Noboru SEKINO
Prof.Dr. - Iwate University, Faculty of Agriculture
Address: Morioka, Japan, 020-8550
E-mail: sekino@iwate-u.ac.jp
Go YAMAUCHI
Prof.Dr. - Iwate University, Faculty of Agriculture
Address: Morioka, Japan, 020-8550
Abstract: The insulation
panels developed in this study are composed of
wood shavings compressed into a mat with a density
of 110kg/m3 without any binder. This mat is lapped
with plastic film that works as a damp proof course.
This paper describes characteristics of our insulation
panels and fireproof tests conducted with a full-scale-thick
wooden frame wall that was sandwiched with wood-fiber
cement board and plasterboard. The test wall was
filled with 100-mm-thick wood shaving insulation
panels or glass wool insulators. These walls were
examined for heat shielding effect and cross section
loss of wood post (105mm by 105mm). The results
revealed that the test wall filled with our insulation
panels had a higher heat shielding performance
than the other. This is because charring of wood
shavings generates water and some of it remains
near the rear surface of our panels due to an
existence of plastic film, and consequently, the
water consumes vaporization energy and resulted
in keeping a temperature lower than around 100°C.
The heat shielding performance was found to have
a quality equivalent to the 60-minute quasi-fireproof
performance stipulated in the Building Standard
Law of Japan. Furthermore, our insulation panel
was found to provide a wall less cross section
loss of wood post than filling a wall with glass
wool. This suggests that wood shaving insulation
panels are superior to glass wool in terms of
structural safety by fire as well as heat shielding
performance.
Key words: insulation panel, wood
shavings, glass wool, heat shielding effect, vaporization
energy, charring.
REFERENCES
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