碳纤维增强复合材料对钢筋混凝土的加固作用

Reinforcement Action of Carbon Fiber Reinforced Polymer on the Reinforced Concrete Structure

由于自然灾害多发和服役时间长,建筑结构难免出现损伤。损伤后,构件整体的各方面性能会一定程度地降低,此时需要对构件进行修复加固以保证结构的正常使用和承载能力。碳纤维增强聚合物(CFRP)加固方法是一种新型加固技术,其研究日趋成熟。经碳纤维增强聚合物加固后的钢筋混凝土结构的力学性能和耐久性能都得到显著改善。随着CFRP应用领域拓宽和各国对环保的重视程度提高,其废料回收利用成为研究热点。目前回收CFRP废料的方法很多,回收产物的质量也有保证,将其应用于建筑领域,可产生极好的环境效益和经济效益。本文总结了利用碳纤维增强聚合物加固技术提高钢筋混凝土结构的抗压能力、抗拉能力、抗弯能力、抗剪能力、动态力学性能和耐久性的研究,分析了各种回收碳纤维增强聚合物废料的方法及优缺点,阐述了碳纤维增强聚合物废料应用于建筑行业的现状并提出了碳纤维增强聚合物材料未来的研究方向。

Due to frequent natural disasters and long service time,it is inevitable that the building structure will be damaged.After the damage,the overall performance of the component will suffer a certain degree of degradation.The construction needs to be repaired and reinforced to ensure normal use and bearing capacity.Carbon fiber reinforced polymer(CFRP)reinforcement method is a new reinforced concrete reinforcement technology,and its research is gradually maturing.The mechanical and durability properties of reinforced concrete structures reinforced with carbon fiber reinforced polymers,are significantly improved.With the broadening of applications and the increasing attention of countries to environmental protection in various countries,its waste recycling has become a research hotspot.At present,there are many ways to recycle CFRP waste and the quality of the recovered products is also guaranteed.Its application to the construction field has strong environmental and economic benefits.This paper summarizes the research on the compressive ability,tensile ability,bending resistance,shear resistance,dynamic mechanical properties and durability of reinforced concrete structure by using carbon fiber reinforced polymer reinforcement technology,analyzes the met-hods and advantages and disadvantages of various recycling carbon fiber reinforced polymer wastes,elaborates the current situation of carbon fiber reinforced polymer waste in the construction industry,and proposes the future research direction of carbon fiber reinforced polymer materials.