Abstract: Bond behavior of corroded reinforcement in concrete wrapped with carbon fiber reinforced polymer
(CFRP) under cyclic loading is experimentally investigated. An electrolyte corrosion technique is used to accelerate
the corrosion of the steel bar in cylindrical concrete specimens. Wrapped specimens are strengthened with one
layer of CFRP after the reinforcements are corroded. The experimental parameters investigated include: corrosion
level, CFRP wrapped and number of loading cycles. Test results indicate that bond strength and area of hysteretic
curve of CFRP wrapped specimens are larger than those of the unwrapped specimens. With increasing the number
of loading cycles, the bond strength and area of hysteretic curve decrease gradually, especially at the 1st cyclic
loading. The CFRP wrapping reduces the bond degradation rate effectively and prevents the bond-splitting failure
of the corroded concrete specimens.
DAI Xiao-dong* (代晓东), WANG Xiao-hui (王小惠), KOU Xin-jian (寇新建)
. Bond Behavior of Corroded Reinforcement in Concrete Wrapped with Carbon Fiber Reinforced Polymer Under Cyclic Loading[J]. Journal of Shanghai Jiaotong University(Science), 2013
, 18(3)
: 271
-277
.
DOI: 10.1007/s12204-013-1393-2
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