摘要
本试验采用了两种强度等级的混凝土,即C40的普通混凝土和C70的高强混凝土,研究高强混凝土遭受高温下的性能衰减的特征。试验中通过掺加化学物质,在高温下使高强混凝土内形成毛细孔,从而防止高强混凝土构件在火灾中发生破坏性爆裂反应,使高强混凝土有可能取得与普通混凝土相当的抗火性能。
There are two kinds of different strength concrete in this experiment:the normal strength concrete(NSC) and the high strength concrete (HSC),with strength grade of C40 and C70,respectively,damage to concrete under high temperature was identified.In this experiment,many chemical materials are mixed into the HSC and construct many small cells in order to prevent the HSC form evoking the damage of its explosive effect in fire.Thus,the fire resistance of the HSC emerged and could be matched with the NSC.
出处
《混凝土》
CAS
CSCD
2003年第3期41-43,共3页
Concrete
关键词
高强混凝土
高温
爆裂
聚丙烯纤维
毛细孔
high strength concrete
high temperature
spalling
polypropylene fibre
small cell
