Health monitoring of concrete structures subjected to environmental attacks

Kevin K. Tseng

doi:10.1117/12.472576

28 June 2002 Health monitoring of concrete structures subjected to environmental attacks

Kevin K. Tseng

Proceedings Volume 4696, Smart Structures and Materials 2002: Smart Systems for Bridges, Structures, and Highways; (2002) https://doi.org/10.1117/12.472576
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

Civil infrastructures are generally the most expensive investments in a country. Concrete has been used extensively in the construction of most of the civil infrastructures. Structures made of concrete have long life span and are rarely replaced once they are erected. During the service life, the concrete ages and deteriorates leading to the loss of structural integrity. One of the major factors for the deterioration of concrete is the attack from environmental factors such as sulfate and acid. This paper presents some experimental results on the effects of environmental attacks on the system performance of impedance-based structural health monitoring. Two types of environmental factors are investigated - sulfate attack and acid attack. The experimental results show that impedance-based health monitoring technique is capable of identifying the change in the material property of concrete due to chemical attacks. Another interesting observation is that the impedance-based monitoring technique appears to be sensitive to the moisture contents in the concrete cube.

Citation Download Citation

Kevin K. Tseng "Health monitoring of concrete structures subjected to environmental attacks", Proc. SPIE 4696, Smart Structures and Materials 2002: Smart Systems for Bridges, Structures, and Highways, (28 June 2002); https://doi.org/10.1117/12.472576

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