Reinforced concrete structures are often subjected to various negative environmental influences, reducing their reliability and durability. Main engineering tasks include extension of their life cycle, assessment of durability, reliability and residual service life. This requires reliable assessment of existing damages due to negative environmental impacts. Deterioration of RC structures is complex issue, which should be considered with the account of various factors. Damages and defects should be assessed, according to different criteria: degradation degree, type, time and cause of formation, etc. Article provides detailed analysis of the most common damages in RC structures on the basis of thorough literature review of this issue. Also, the classification of reasons for decrease of bearing capacity is proposed. Additionally, are discussed corrosion mechanisms and specifics of stress-strain state in corroded RC structures.
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