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Evaluation of Deterioration of Structural Concrete Due to Chloride Intrusion and Other Damaging Mechanisms.
| 题名： | Evaluation of Deterioration of Structural Concrete Due to Chloride Intrusion and Other Damaging Mechanisms. |
| 作者： | Howell, B.; Hopwood, T.; Meade, B. W.; Palle, S. |
| 关键词： | Concrete bridges, Chloride concentration, Reinforcing steel, Deterioration, Highway bridges, Corrosion, Deicing, Alkali-Silica reaction, Service life, Kentucky |
| 摘要： | Kentucky's bridges continue to age and experience distress. The intrusion of chlorides into concrete remains the primary mechanism for deterioration. It leads to reinforcing steel corrosion that damages the adjoining concrete structure. This study found problematic chloride concentrations in Kentucky concrete bridge elements (decks, pier caps, abutments). Chloride levels have been found at concentrations sufficient to initiate reinforcing steel corrosion. In some cases, chloride concentrations were sufficient to cause accelerated corrosion and produce major section loss of reinforcing steel. Advanced stages of corrosion such as these typically require costly repairs and maintenance to extend the service life of bridges. Field inspections and laboratory analyses conducted during this study verified the ongoing problem of concrete deterioration across bridges within Kentucky's transportation network |
| 总页数： | Howell, B.; Hopwood, T.; Meade, B. W.; Palle, S. |
| 报告类型： | 科技报告 |
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