Reinforced concrete structures located in coastal areas face durability-related concerns such as reinforcing steel's corrosion due to aggressive and humid environments. An accidental fire in such a scenario can lead to a severe loss of mechanical properties and load-carrying capacity. This paper examines the load–deflection response of short-span RC beams on account of exposure to combinations of corrosion-induced damage and exposure to elevated temperatures. The idea pertinent to this study is to simulate a fire in an old or aged structure located in a humid environment. The study involved flexure testing on normal strength reinforced concrete beams reinforced with SD TMT (Super Ductile thermo-mechanically treated) bars. The RC beam specimens were exposed to impressed current to achieve desired corrosion levels in terms of mass loss of 4% & 8% and subsequently to elevated temperatures (400 °C and 600 °C) under a steady state. The beams were tested in flexure, and the load–deflection response was observed. The results indicate a notable reduction in load–deflection behavior due to the two non-linear phenomena' superimposition. It was concluded that the exposure to combinations mentioned above of corrosion-induced damage and elevated temperatures caused significant loss of load–deflection response of RC beams.

位于沿海地区的钢筋混凝土结构面临与耐久性相关的问题，例如由于侵蚀性和潮湿环境导致的钢筋腐蚀。在这种情况下，意外起火会导致机械性能和承载能力的严重损失。本文研究了短跨度RC梁由于受到腐蚀引起的损伤和高温所引起的荷载-挠度响应。与这项研究相关的想法是模拟位于潮湿环境中的旧的或老化的建筑物中的火灾。该研究涉及对用SD TMT（超级球墨铸铁热机械处理）钢筋增强的普通强度钢筋混凝土梁进行挠曲测试。将RC梁试样暴露于外加电流下，以达到4％和8％的质量损失所需的腐蚀水平，然后在稳定状态下暴露于高温（400°C和600°C）。对梁进行了挠曲测试，并观察了载荷-挠度响应。结果表明，由于两种非线性现象的叠加，载荷-挠度行为显着降低。结论是，暴露于上述组合的腐蚀引起的损伤和高温导致RC梁的荷载-挠度响应的显着损失。结果表明，由于两种非线性现象的叠加，载荷-挠度行为显着降低。结论是，暴露于上述组合的腐蚀引起的损伤和高温导致RC梁的荷载-挠度响应的显着损失。结果表明，由于两种非线性现象的叠加，载荷-挠度行为显着降低。结论是，暴露于上述组合的腐蚀引起的损伤和高温导致RC梁的荷载-挠度响应的显着损失。