非破壊検査・診断Ⅳ

[1288] EXPERIMENTAL INVESTIGATION OF CONCRETE QUALITY CONDITION BY IMPACT WAVEFORM

Olatunde OGUNSEYE¹, 渡辺健², 橋本親典² (1.Tokushima University 2.徳島大学)

キーワード：concrete durability, fire damage, mechanical impedance, non-destructive testing, routine inspection, コンクリートの耐久性, 定期検査, 機械インピーダンス, 火害, 非破壊試験

Mechanical Impedance`s capability of detecting deterioration near concrete surface, makes it more suitable method for periodical and routine inspection of concrete infrastructures. The Impact waveform from which mechanical impedance is derived and could further be used to investigate the durability condition with respect to air permeability of concrete structure. Concrete damage by fire was simulated in this research. It was discovered that the mechanical impedance parameters have good correlation with the air permeability condition of the concrete surface.