寿县合兴浅谈钢结构厂房的钢在火灾中的特点发布时间：2015-11-10 9:48:59 浏览次数:528
The fire resistance of the steel, after heating, immediately will appear plastic changes, with 15 minutes will be "noodles" the missing part, according to the destruction of the entire loss of stability and damage. It's hard to break the bar.
Our construction uses the steel, in the room temperature, the high strength, but the temperature 500 left the steel strength, namely starts to lose gradually, he also already and the normal value half the support ability. According to the determination, the construction of the fire resistance is commonly used in the temperature of the piano is cold, not to destroy the fire in the fire of 5 minutes after the temperature has reached 556. So bare steel refractory limit theory modern medicine for 15 minutes.