Service life prediction of RC structures in marine environment using long term chloride ingress data: Comparison between exposure trials and real structure surveys
Service life prediction of RC structures in marine environment using long term chloride ingress data: Comparison between exposure trials and real structure surveys
复制标题
使用长期氯化物侵入数据预测海洋环境中的钢筋混凝土结构的使用寿命：暴露试验与实际结构调查之间的比较
DOI：
10.1016/j.conbuildmat.2016.03.156
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发表时间：
2016-06-15
影响因子：
7.4
通讯作者：
Li, Quanwang
中科院分区：
文献类型：
--
作者：
Pang, Long;Li, Quanwang
钢筋氯离子腐蚀是影响海洋环境中钢筋混凝土结构使用寿命的主要因素，氯离子渗透模型的建立是评估氯离子腐蚀的基础。经验菲克第二扩散定律提供了一种简单的方法来预测在实际情况下的氯离子渗透。然而，该模型参数的推导主要基于室内试验或现场暴露试验的结果，这些参数需要用真实的结构的长期现场结果进行标定。对我国南方沿海17个高桩码头结构进行了现场调查，并与长期暴露试验结果进行了氯离子侵入剖面对比。根据这些结果推导了表面氯离子含量和氯离子扩散系数的概率模型;最后研究了基于暴露试验或基于真实的结构调查的不同氯离子侵入参数模型对海洋结构物预期使用寿命的影响。(C)2016爱思唯尔有限公司版权所有。
The service life of reinforced concrete (RC) structures in marine environments is mainly influenced by the chloride-induced corrosion of reinforcement, and the development of chloride penetration model is essential for its assessment. The empirical Fick's second law of diffusion provides a simple way to predict the chloride penetration in practical situations. However, the derivation of parameters of this model is mainly based on the results of laboratory experiments or field exposure trials, and these parameters need to be calibrated with long-term field results of real structures. The filed investigations of seventeen high pile wharf structures located at the south coast of China were carried out, and the results were compared with the long-term exposure test results in terms of chloride ingress profile. The probability models for surface chloride content and chloride diffusion coefficient were derived according to these results; and finally the effects of different models of chloride ingress parameters, based on exposure trails or based on real structure surveys, on the expected service life of marine structures were investigated. (C) 2016 Elsevier Ltd. All rights reserved.