Experimental Study on the Deterioration Prediction of Concrete Structures

概要

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The purpose of this study is to analyze the deterioration mechanisms that affect the required performance (specifications critical to the operability) of concrete structures. A technique based on deterioration prediction is introduced which should prove useful in the maintenance and management of structures. Neutralization and chemical attack were selected as two exampｌe mechanisms.　Neutralization　was examined in terms of its effect on reinforcement corrosion and bearing strength，while the effects of chemical attack on strength， esthetic appearance， and bearing strength were studied. A deterioration limit was established for the ultimate state of structures with a safety factor of 1.15. Deterioration was predicted about flexural strength. In this way， a prediction method of neutralization and chemical attack was defined by arranged factor of deterioration. Flexural strength of neutralization was predicted by rate of neutralized thickness. Flexural strength of chemical attack was predicted by rate of strength deterioration.
北見工業大学の論文