New Developments in Sensing Technology for Structural Health Monitoring
New Developments in Sensing Technology for Structural Health Monitoring
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结构健康监测传感技术的新发展
DOI：
10.1007/978-3-642-21099-0_15
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Grattan S
中科院分区：
文献类型：
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作者：
Grattan S
钢筋混凝土是世界上最流行的建筑材料，因为它可以灵活地制造不同复杂的形状，同时提供强度，长使用寿命和结构完整性。然而，钢筋混凝土结构的一个主要问题是，当暴露在恶劣的环境条件下，例如在海洋或城市环境中，钢筋（钢筋）的腐蚀。腐蚀通常是由氯化物的进入引起的，如在海洋环境中，或二氧化碳的进入引起的，如在城市环境中；后者通过一种称为碳化的过程导致混凝土的碱度降低，钢失去了混凝土提供的保护。腐蚀产物（锈）占据了原钢的许多倍的体积，因此结构的完整性受到严重损害，有时会导致灾难性的结构破坏。因此，获得引发腐蚀的因素和腐蚀速度的信息是非常可取的，这两者都将有助于土木工程师以经济有效的方式管理他们的钢筋混凝土结构。
BackgroundReinforced concrete is the most popular construction material in the world due to its flexibility to make different complicated shapes, yet providing strength, long service life and structural integrity. However, a major issue for reinforced concrete structures is the corrosion of the reinforcement bars (rebars) when exposed to aggressive environmental conditions, such as those in marine or urban environments. The corrosion is normally caused by the ingress of chlorides, as in the case of marine environment, or carbon dioxide, as in the case of urban environment; the latter causes a reduction in the alkalinity of concrete through a process called carbonation and steel loses the protection provided by the concrete. Corrosion products (rust) occupy many times the volume of the original steel and as a consequence the integrity of the structure is severely compromised and occasionally leads to a catastrophic structural failure. Therefore, it is highly desirable to obtain information about factors which initiate the corrosion and the rate of corrosion once it has already started, both of which will help civil engineers to manage their reinforced concrete structures in a cost-effective manner.