| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of easily predicting an embrittlement state before reinforcement in reinforced concrete breaks using a non-destructive measuring means. SOLUTION: In the method of predicting the embrittlement state before the reinforcement in the reinforced concrete breaks using an eddy current flaw detecting sensor, the Y(V) value of the eddy current of the reinforcement where the amount of magnetite formed on the surface of the reinforcement is varied is measured by the eddy current flaw detecting sensor based on a fixed measuring condition, and thus the correlation between the amount of magnetite of the reinforcement and the Y(V) value is determined. After that, the Y(V) value of the eddy current of the reinforcement in actually target reinforced concrete is measured by the eddy current flaw detecting sensor under the same measuring condition, the amount of magnetite of the reinforcement in the concrete is determined from the Y(V) value based on the correlation between the magnetite amount and the Y(V) value, and the embrittlement state of the reinforcement is predicted based on this magnetite amount. COPYRIGHT: (C)2009,JPO&INPIT
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