摘要
本文通过试验对普通混凝土、钢纤维混凝土和聚丙烯纤维混凝土高温后破坏状况进行了研究;利用超声波的原理,对加热后的3种混凝土分别进行超声波速检测,并用超声波速评价了各种纤维对混凝土抗火性能所产生的影响;提出了综合超声波速和混凝土表面状况来推断受火温度及损害程度的方法。
In this oracle, the damage states of plain concrete, steel fibre reinforced concrete and polypropylene fibre reinforced concrete after exposure in the high temperature are researched. with the ultrasonic theory, the ultrasonic speed in three kinds of heated specimens are tested. Different influence of steel fiber and polypropylene fibre are analysied in this article. Some methods are provided rof estimating the damage degree and the remperature of fire disaster according to the ultrasonic speed and the surface state of heated concrete.
出处
《中国建材科技》
2006年第2期18-22,共5页
China Building Materials Science & Technology
关键词
高温
混凝土
钢纤维
聚丙烯纤维
超声波
High temperature
Concrete, Steel fibre
polypropylene fibre
ultrasonic
