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One of the difficult points of concrete traceability is that a product number or product data can not be pasted directly on fresh concrete due to its flow ability. In this study, several types of IC-Tags and concrete were unified by mixing on agitator. The behavior of IC-Tags at concrete work, influence of them on concrete and responsiveness of them by the radio wave were evaluated through the actual construction steps. Besides, suitable number of IC-Tag for reliable detection from the hardened concrete was estimated. From these results, it was demonstrated that IC-Tags could be apply to concrete traceability.

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