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首页> 外文期刊>NDT & E international >Influence of chloride ions and hot weather on isolated rusting steel bar in concrete based on NDT and electro-chemical model evaluation
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Influence of chloride ions and hot weather on isolated rusting steel bar in concrete based on NDT and electro-chemical model evaluation

机译：基于无损检测和电化学模型评估的氯离子和炎热天气对混凝土中生锈的钢筋的影响

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摘要

ABSTRACT The most prominent durability concern for reinforced concrete (RC) structures is the corrosion of steel reinforcement in concrete. RC buildings exposed to chloride and high temperature environments like sea and deserts suffer from accelerated corrosion of rebars. The chloride attack and increase in the electro-chemical reaction rate of corrosion due to high temperature is a thermodynamic phenomenon influenced by several parameters and some of them are being neglected in the past research works. The purpose of this present paper is therefore, to model and verify by NDT the coupled effects of chloride and temperature on corrosion of reinforcement throughout the life of concrete buildings by incorporating realistic thermodynamic model evaluations and actual field condition NDT. The model evaluation has been accomplished by the use of concrete durability model as a computational platform on which the corrosion based reinforced concrete building performance and quality at early age and throughout the life of concrete structure is examined in both space and time domains under environmental actions of chloride and temperature. On this line, the thermodynamic modeling evaluation of concrete forms the fundamental core of the theoretical approach to achieve both the scientific knowledge and engineering simulations of altering materials. The NDT results for the effect of chloride and temperature on corrosion have been compared with the DuCOM electro-chemical thermodynamic corrosion model evaluation and are found to be in close agreement with each other.
机译：摘要钢筋混凝土（RC）结构最关注的耐久性问题是钢筋对混凝土的腐蚀。暴露于氯化物和海洋和沙漠等高温环境的RC建筑物会遭受钢筋的加速腐蚀。高温导致的氯化物侵蚀和腐蚀的电化学反应速率的增加是受几个参数影响的热力学现象，在过去的研究工作中其中一些被忽略了。因此，本文的目的是通过结合实际的热力学模型评估和实际的现场条件NDT，通过NDT对氯化物和温度对钢筋混凝土腐蚀的耦合效应进行建模和验证。通过使用混凝土耐久性模型作为计算平台来完成模型评估，在该平台上，在环境作用下，在时域和时域内检查基于腐蚀的钢筋混凝土在早期和整个混凝土结构中的性能和质量。氯化物和温度。在这条线上，混凝土的热力学建模评估是实现变质材料的科学知识和工程模拟的理论方法的基本核心。 NDT对氯化物和温度对腐蚀的影响的结果已与DuCOM电化学热力学腐蚀模型评估进行了比较，并且发现彼此之间非常吻合。

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