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首页> 外文期刊>Journal of Reinforced Plastics and Composites >Creep and Durability of Environmentally Conditioned FRP-RC Beams Using Fiber Optic Sensors
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Creep and Durability of Environmentally Conditioned FRP-RC Beams Using Fiber Optic Sensors

机译：使用光纤传感器的环境调节FRP-RC梁的蠕变和耐久性

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摘要

Accelerated environmental conditioning increases creep rate of FRP bars and results in 2%-3% moisture absorption. Presence of salt in the solution does not affect creep rate of FRP-RC beams or moisture absorption of FRP bars. Effect on strength and stiffness of FRP is about 3% for saline solutions and none for moisture. Environmental conditioning lowers post-cracking stiffness of the beams due to stiffness degradation of FRP and loss of bond between FRP and concrete. Fiber otic sensors are less sensitive than foil gages to temperature effects, but must be handled properly during construction and secured carefully against harsh environments.
机译：加速的环境调节会增加FRP筋的蠕变速率，并导致2％-3％的水分吸收。溶液中盐的存在不会影响FRP-RC梁的蠕变速率或FRP条的吸湿率。对于盐溶液，对FRP强度和刚度的影响约为3％，对于水分，则无影响。由于FRP的刚度降低以及FRP与混凝土之间的粘结力损失，环境调节降低了梁的开裂后刚度。光纤传感器对温度的影响不如箔规敏感，但是在施工过程中必须正确处理，并要小心防止恶劣的环境。

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