Developments in Performance Monitoring of Concrete Exposed to Extreme Environments
Developments in Performance Monitoring of Concrete Exposed to Extreme Environments
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DOI：
10.1061/(asce)is.1943-555x.0000089
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发表时间：
2012-09
影响因子：
3.3
通讯作者：
W. McCarter;T. Chrisp;G. Starrs;A. Adamson;E. Owens;P. Basheer;S. Nanukuttan;S. Srinivasan;N. Holmes
中科院分区：
文献类型：
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作者：
W. McCarter;T. Chrisp;G. Starrs;A. Adamson;E. Owens;P. Basheer;S. Nanukuttan;S. Srinivasan;N. Holmes
混凝土表面区域的性能被认为是钢筋混凝土结构劣化速率的主要因素，因为它提供了唯一的屏障，阻止含有溶解离子物种（如氯化物）的水进入，最终引发钢筋的腐蚀。因此，对覆盖区混凝土进行现场监测对于试图对结构的使用性能进行现实的预测至关重要。为此，本文提出了一种远程询问系统的发展，以允许连续，实时监控的覆盖区混凝土从办公室设置。使用是由一个多电极阵列嵌入在覆盖区混凝土，以获得离散的电阻率和温度测量，这两个参数监测空间和时间。现场仪器，它允许远程询问放置在海洋暴露现场的混凝土样品，详细介绍了一起…
AbstractThe performance of the surface zone of concrete is acknowledged as a major factor governing the rate of deterioration of reinforced concrete structures because it provides the only barrier to the ingress of water containing dissolved ionic species such as chlorides, which ultimately initiate corrosion of the reinforcement. In situ monitoring of cover-zone concrete is therefore critical in attempting to make realistic predictions as to the in-service performance of the structure. To this end, this paper presents developments in a remote interrogation system to allow for continuous, real-time monitoring of the cover-zone concrete from an office setting. Use is made of a multi electrode array embedded within cover-zone concrete to acquire discretized electrical resistivity and temperature measurements, with both parameters monitored spatially and temporally. On-site instrumentation, which allows for the remote interrogation of concrete samples placed at a marine exposure site, is detailed together wi...