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首页> 外文期刊>Corrosion Engineering, Science and Technology >Effect of temperature on corrosion parameters and apparent activation energy measured by embedded sensors in pilot container in El Cabril repository
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Effect of temperature on corrosion parameters and apparent activation energy measured by embedded sensors in pilot container in El Cabril repository

机译：温度对El Cabril储存库中先导容器中嵌入式传感器测得的腐蚀参数和表观活化能的影响

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摘要

In order to study the real on-site aging of concrete and the potential corrosion risk for the reinforcements, Enresa has undertaken a monitoring programme in collaboration with Institute of Construction Science 'Eduardo Torroja' (IETcc) by permanently monitoring a pilot nuclear waste container through the installation of sensors. The pilot container of medium and low radioactive waste is buried near the real large concrete cells and has been monitored from 1994. The evolution from 1995 of corrosion parameters (corrosion rate, corrosion potential, electrical resistivity, concrete strains, oxygen availability) obtained is commented in the paper. The results indicate that the parameters evolve with time and the temperature is a very relevant variable influencing the measurements. An attempt to model the effect of temperature has been made by calculating the 'apparent activation energies' for the case of the electrical resistivity. Two clear regimes or slopes were found, one below and the other above 20℃, which have been attributed to a change in the state of the water from liquid to vapour although it has not been confirmed. The fact is that the resistivity increase is more pronounced above 20℃ than below.
机译：为了研究混凝土的实际老化和增强材料的潜在腐蚀风险，Enresa与建筑科学研究所“ Eduardo Torroja”（IETcc）合作实施了一项监控计划，该计划通过以下方式永久监控一个试验性核废料容器：传感器的安装。从1994年开始对中低放射性废物的试验容器进行埋葬，并对其进行了监控。从1995年开始，获得了腐蚀参数（腐蚀速率，腐蚀电位，电阻率，混凝土应变，氧气供应量）的演变过程。在本文中。结果表明参数随时间变化，温度是影响测量的非常相关的变量。通过计算电阻率情况下的“表观活化能”，试图对温度的影响进行建模。发现了两个清晰的区域或坡度，一个低于20℃，另一个高于20℃，这归因于水的状态从液态变为蒸气，尽管尚未证实。事实是，在20℃以上，电阻率的增加比在以下温度下更为明显。

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