Corrosion of steel reinforcements embedded in FRP wrapped concrete
Corrosion of steel reinforcements embedded in FRP wrapped concrete
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DOI：
10.1016/j.conbuildmat.2008.01.008
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发表时间：
2009-01-01
影响因子：
7.4
通讯作者：
Malhotra, S. N.
中科院分区：
文献类型：
--
作者：
Gadve, Sangeeta;Mukherjee, A.;Malhotra, S. N.
大量的钢筋混凝土（RC）结构已经损坏，由于钢筋腐蚀的纤维增强聚合物（FRP）复合材料修复。本文研究了表面粘贴FRP后混凝土中钢筋的腐蚀过程。混凝土圆柱体与嵌入钢筋浸泡在盐水和阳极电流通过钢筋，引发混凝土开裂，由于加速腐蚀的钢。玻璃和碳纤维增强塑料板已被粘在圆筒上。阳极电流持续特定时间。已经报道了拔出强度、质量损失、钢的半电池电势和电池电压作为样品性能的度量。FRP包裹的样品显示出显著更高的耐腐蚀性。(C)2008爱思唯尔有限公司保留所有权利。
A large number of reinforced concrete (RC) structures that have been damaged due to corrosion of steel reinforcements are rehabilitated with fiber-reinforced polymer (FRP) composites. This paper investigates the progression of corrosion of steel in concrete after it has been treated with surface bonded FRP. Concrete cylinders with embedded steel bars are immersed in salt water and anodic current is passed through the reinforcement to initiate cracking in concrete due to accelerated corrosion of steel. Glass and carbon FRP sheets have been adhesively bonded on the cylinders. Anodic current was continued for specified times. Pull out strength, mass loss, half cell potential of the steel and cell voltage have been reported as metrics of performance of the samples. FRP wrapped samples have shown substantially higher resistance to corrosion. (C) 2008 Elsevier Ltd. All rights reserved.