耐火構造内の火災の性状 （4） — 実大火災実験（その2）—

抄録

A concrete block house (area 4.3+3.5m, height 5.8m, two storied) was used for experiment on which the combustion speed, the flame temperature CO₂, CO% in dry exhaust gas and expansion of wall were measured.
Before the fire and after the fire the house was vibrated with the vibrator mounted by the flat roof.
Results were as follows :
1) The maximum temperature was about 800～900°C.
2) The rate of excess air as about 1.0.
3) The combustion speed was compared with the theoretical value explained in the same, bulletin Vol. 2, No. 1.
4) The expansion of the wall was very big, therefore large cracks were grew through the wall.
5) After the fire, the earthquake resistance of this house was unusually decreased.