| 摘要 |
PROBLEM TO BE SOLVED: To provide an RFID tag, which can be embedded in a concrete test piece and used, and to provide a concrete test piece with the embedded tag. SOLUTION: The tag 2 is provided with an antenna coil 2a formed by spirally etching rolled copper foil on a plastic film, and in the inside area of the antenna coil 2a, a plumb bob 9 is arranged for increasing the average density of the tag higher than the density of concrete. The concrete test piece is formed by mounting the tag 2 after placing concrete in a form while compacting it, and then placing capping concrete 5b, with a compressive strength smaller than that of base concrete 5a. In this way, the tag 2 can be embedded at a predetermined position of the concrete test piece upper part, without impairing the tag 2 by a ramming rod. COPYRIGHT: (C)2008,JPO&INPIT
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