论文部分内容阅读
对5块钢筋混凝土板(分别为未加固、采用有机胶或无机胶粘贴碳纤维加固、采取或不采取防火保护措施)进行标准火灾试验,得出了不同种类的胶粘剂和是否采取防火保护措施对高温下碳纤维加固钢筋混凝土板的破坏形态、跨中变形、耐火极限等的影响。试验结果表明:即使未采取任何防火保护措施,无机胶粘贴碳纤维加固钢筋混凝土板仍具有较好的耐火性能;未采取防火保护措施的情况下,有机胶粘贴碳纤维加固钢筋混凝土板的耐火性能比较差;有机胶粘贴碳纤维加固钢筋混凝土板,采取适当的防火保护措施后,可有效降低碳纤维粘贴层的温度,从而保证碳纤维与混凝土的粘结强度。
Standard fire tests were conducted on five reinforced concrete slabs (unreinforced, reinforced with organic glue or inorganic adhesive bonded carbon fiber, with or without fire protection measures), and different kinds of adhesives were obtained and whether fire protection measures were taken High temperature carbon fiber reinforced concrete slab damage morphology, deformation in the middle, the impact of fire resistance and so on. The test results show that even if no fire protection measures are taken, the inorganic adhesive carbon fiber reinforced concrete slabs still have good fire resistance performance; without the measures of fire protection, the fire resistance of reinforced concrete slabs reinforced with organic adhesive carbon fiber Is relatively poor; organic adhesive carbon fiber reinforced concrete slabs, take appropriate fire protection measures, can effectively reduce the temperature of the carbon fiber adhesive layer, so as to ensure the bonding strength of carbon fiber and concrete.