温度与碱溶液作用下FRP片材耐久性研究  

Combined Effects of Temperature and Alkaline Solution on Durability of FRP Sheets

作　　者：李杉[1,2] 任慧韬[1] 黄承逵[1] 施慕桓[1] 

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024 [2]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《建筑材料学报》2010年第1期94-99,共6页Journal of Building Materials

基　　金：国家自然科学基金资助项目(50608013)

摘　　要：对遭受30,40,50,60℃碱溶液作用后的碳纤维增强聚合物(CFRP)和玻璃纤维增强聚合物(GFRP)片材进行了静力拉伸试验.结果表明:随着老化时间的增加,CFRP和GFRP片材的抗拉强度、弹性模量和延伸率逐渐降低,且温度越高,降低速度越快.采用修正阿伦尼乌斯模型对试验结果进行分析,给出了纤维增强聚合物在温度与碱溶液共同作用下的设计强度参考意见.Carbon fiber-reinforced polymer（CFRP） and glass fiber-reinforced polymer（GFRP） were exposed to alkaline solution at 30,40,50 and 60 ℃,then the tensile tests of FRP specimens were conducted.The results indicate that the tensile strength,elastic modulus and elongation of FRP specimens gradually decrease with the increase of exposure time,and the decrease is more pronounced under higher temperatures.Based on the results,a modified Arrhenius analysis is developed to predict the long term durability performance of FRP,and referenced suggestions on the design of ultimate tensile strengths of FRP subjected to the aggressive environment are provided.

关 键 词：纤维增强聚合物 温度 碱溶液 耐久性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]