Compressive strength loss and reinforcement degradations of reinforced concrete structure due to long-term exposure |
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| Affiliation: | 1. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;2. Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China;3. China Vanke Co., Ltd., Wenzhou 325000, China;4. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;1. Clean Energy, AMEC Foster Wheeler, Booths Park, Knutsford, Cheshire WA16 8QZ, UK;2. School of Eng., University of Aberdeen, UK;3. Institute for Risk and Uncertainty, University of Liverpool, UK;1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Nuclear Power Institute of China, Chengdu, Sichuan 610213, China |
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| Abstract: | Degradations due to long-term weathering actions on a reinforced concrete structure were investigated. Compressive strength and reinforcement corrosion developments of a prototype RC structure were monitored for 6 years using destructive and non-destructive tests which include periodic coring, compressive strength, rebound hammer, ultrasonic pulse velocity, carbonation, half-cell and tensile strength tests. Eventually, results have shown that more than a quarter of peak compressive strength can be lost within 5 years of continuous exposure. Corrosion of the exposed bars within the range of the testing period was also observed to be quite alarming. Thus, defects caused by prolonged actions of environmental factors may pose serious threats on the integrity of partially completed structures especially abandoned projects. |
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