首页|期刊导航|哈尔滨工业大学学报（英文版）|Experimental research on refractory performance of reinforced concrete beams strengthened with CFRP sheets bonded with an inorganic adhesive
哈尔滨工业大学学报（英文版）2010，Vol.17Issue(4)：568-574,7.
Experimental research on refractory performance of reinforced concrete beams strengthened with CFRP sheets bonded with an inorganic adhesive
Experimental research on refractory performance of reinforced concrete beams strengthened with CFRP sheets bonded with an inorganic adhesive
摘要
Abstract
To meet the requirement of fire endurance for concrete structures strengthened with CFRP sheets,this study develops an inorganic adhesive whose strength at 600℃ is not lower than that at normal room temper ature.The inorganic adhesive is then used to bond CFRP sheets on reinforced concrete beams in order to strengthen them.The fire protection of the CFRP sheets is done using the thick-type fireproofing coatings for tunnel(TFCT)and steel structure(TFCSS)respectively.Four specimens are tested in the furnace together.Specimens are exposed to fire for 1.5 h in according to the ISO834 standard fire curve,and then naturally cooled for 1 h.In the tests,the largest displacements at the mid-span positions of specimens are only from1/1400 to 1/318 of actual span corresponding to the highest temperatures from 300 ℃ to 470 ℃.After the specimens are naturally cooled to the normal temperature and the fireproofing coatings are then removed,it can be seen that the CFRP sheets keep in a good state,which indicates that CFRP sheets can be tightly bonded on the concrete and work well together with the concrete beams during and after fire.Besides,the tests also verify that the fire performance of TFCT is superior to TFCSS for the strengthened beams.关键词
fire performance/reinforced concrete beam/CFRP sheets/fireproofing coating/testKey words
fire performance/reinforced concrete beam/CFRP sheets/fireproofing coating/test分类
建筑与水利引用本文复制引用
ZHENG Wen-zhong,WAN Fu-xiong,LI Shi-guang..Experimental research on refractory performance of reinforced concrete beams strengthened with CFRP sheets bonded with an inorganic adhesive[J].哈尔滨工业大学学报（英文版）,2010,17(4):568-574,7.基金项目
Sponsored by Changjiang Scholars Program of China(Grant No.2009-37),the National Natural Science Foundation of China(Grant No.50678050)and Innovative Science Foundation of HIT(Grant No.HIT2005C-3). （Grant No.2009-37）
