...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of disaster resilience in the built environment >The experimental behavior of CFRP-strengthened reinforced concrete slabs with fire protection systems subjected to standard fire exposure
【24h】

The experimental behavior of CFRP-strengthened reinforced concrete slabs with fire protection systems subjected to standard fire exposure

机译：CFRP加固的带防火系统的钢筋混凝土板在标准火灾下的试验性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Purpose - This paper aims to evaluate fire resistance of carbon fiber-reinforced polymer (CFRP)-strengthened concrete slabs in two forms of unprotected and protected against fire. Design/methodology/approach - To achieve the objective, an unstrengthened and two CFRP-strengthened concrete slabs were first subjected to increasing gravity loading until failure. Subsequently, the unstrengthened concrete slab was placed on a furnace and was subjected to a constant service gravity load and then, the temperature of the furnace was increased according to a standard temperature-time curve until the failure of the slab occurred This slab was strengthened by CFRP with two different amounts and then, in two cases of unprotected and protected against fire, was tested in accordance with the aforementioned method. Findings - The gravity test results revealed that CFRP strips bonded to concrete slabs increased the load-bearing capacity considerably. So, this method can be suitable for flexural strengthening of concrete slabs. The fire test results showed that because of more load-bearing capacity and subsequently increase in service gravity load, the strengthened concrete slab failed in a short time due to the lack of CFRP resistance against fire. By contrast, the protected specimens resisted the fire in a considerable time. In addition, it was revealed that details of fire protective coating had an important effect on fire resistance duration. Originality/value - It is notable that in the literature, there is a lack of data on the fire endurance of fiber-reinforced polymer-strengthened concrete slabs alone without any fire protection system. Furthermore, the applicability and effectiveness of a new kind of spray mineral fire protective coatings was evaluated.
机译：目的-本文旨在评估碳纤维增强聚合物（CFRP）增强混凝土板在两种形式的未防护和防火情况下的耐火性。设计/方法/方法-为了达到此目的，首先对未加固的和两层CFRP加固的混凝土板进行不断增加的重力载荷直至失效。随后，将未加强的混凝土板放置在炉子上并承受恒定的重力载荷，然后按照标准的温度-时间曲线升高炉子的温度，直到发生板子的破坏为止。根据上述方法测试了两种不同量的CFRP，然后在两种情况下未进行保护和防火的情况。发现-重力测试结果表明，粘结到混凝土板上的CFRP条带大大提高了承载能力。因此，该方法适用于混凝土板的抗弯加固。耐火试验结果表明，由于承载能力增强，随后重力荷载增加，钢筋混凝土楼板由于缺乏CFRP耐火性而在短时间内失效。相反，受保护的标本在相当长的时间内抵抗了火灾。另外，揭示了防火涂料的细节对耐火时间有重要影响。原创性/价值-值得注意的是，在文献中，仅纤维增强的聚合物增强混凝土板的耐火性缺乏数据，而没有任何防火系统。此外，评估了新型喷涂矿物防火涂料的适用性和有效性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号