摘要
采用快速冻融法,研究了不同冻融循环次数下,碳纤维增强复合材料(CFRP)加固混凝土结构的耐久性问题,结果表明,冻融循环作用后,CFRP片材弹性模量基本不变,抗拉强度和伸长率有轻微的降低;混凝土弹性模量降低幅度较大,而失重率呈先降低后增加的趋势;CFRP—混凝土界面的粘结强度以及CFRP加固后混凝土梁的抗弯性能均有不同程度的降低。
The durability of concrete structure with carbon fiber reinforced polymer（ CFRP） in different freeze-thaw cycles was studied using the rapid freezing and thawing method. The results show that,after the action of freeze-thaw cycle,the elastic modulus of CFRP sheet is essentially the same,but the tensile strength and elongation decrease slightly; the elastic modulus of concrete is greatly reduced,and the weight loss rate first increases and then decreases; the bond strength of CFRP-concrete interface and the flexural performance of CFRP reinforced concrete beam are both reduced in varying degrees.
出处
《工程建设》
2015年第1期7-11,19,共6页
Engineering Construction
