Experimental investigation and modelling of the fire performance of RC columns retrofitted with fabric-reinforced cementitious matrix (FRCM) systems

我们将对一种被称为纤维增强胶凝基质（FRCM）的新型复合材料系统约束的钢筋混凝土柱进行防火试验。FRCM系统由一层或多层由碳、玻璃或聚对苯二苯并异恶唑（PBO）网格制成的无腐蚀性纺织品组成，这些网格夹在胶凝砂浆层之间。胶凝砂浆起到屏蔽作用，为嵌入的织物提供保护，这可能有助于系统的耐火性。然而，这一假设需要实验验证，因为FRCM系统很少进行耐火性测试。在现场应用之前，向工程界提供有关其耐火性能的具体数据是至关重要的。我们的合作者将在精心设计的一系列试验中对frp -承压柱进行防火试验。我们的团队将在这些结果的基础上开发一个数值模型来模拟约束对约束柱整体性能的影响。

We will carry out fire tests on reinforced concrete columns confined with a novel composite system known as fabric-reinforced cementitious matrix (FRCM). FRCM systems consist of one or more layers of non-corrosive textiles made of carbon, glass, or polyparaphenylene benzobisoxazole (PBO) grids that are sandwiched between layers of cementitious mortars. The cementitious mortar act as a shield that provides protection for the embedded fabric, which may contribute to the fire resistance of the system. However, this hypothesis needs to be verified experimentally since FRCM systems have rarely been tested for fire resistance. It is deemed crucial to provide the engineering community with concrete data on their fire resistance prior to being recommended in field applications. Our collaborator will carry out fire tests on FRCM-confined columns in a well designed series of tests. Our team will build on these results to develop a numerical model to simulate the effect of confinement on the overall performance of the confined columns.