摘要
对玄武岩纤维复合材料(BFRP)约束混凝土柱在高温下的温度场和极限承载力进行了分析。结果表明,对于有机胶约束混凝土柱,当表面温度高于340℃后约束开始消失;对于无机胶约束混凝土柱,当表面温度高于580℃后约束开始消失;当温度达到800℃时,无机及有机胶粘贴的玄武岩纤维布均失去约束效力;BFRP有一定的隔热能力,使用无机胶粘贴的BFRP其隔热性能优于有机胶。
This paper analyzed the temperature field and ultimate load-carrying capacity of BFRP confined concrete at high temperature. The results show that for organic glue,the constraint begin to disappear when the surface temperature over 340 ℃. And for inorganic glue,the constraint begin to disappear when the surface temperature over 580 ℃. However,when the surface tem-perature is 800 ℃,both of organic glue and inorganic glue lose the constraint efficacy on BFRP concrete. BFRP has a certain heat-insulating capability,and the heat-insulating capability of BFRP with inorganic glue is superior to BFRP with organic glue.
出处
《新型建筑材料》
北大核心
2017年第11期51-54,共4页
New Building Materials
基金
国家自然科学基金项目(51404013)
关键词
混凝土柱
耐火性能
粘结剂
热因素分析
BFRP, concrete column, fire resistance, binder, thermal factor analysis
