CONCRETE BLOCK AND ITS LAYING METHOD, AND METHOD FOR REPLACING IC TAG OR ANNULAR ANTENNA IN CONCRETE BLOCK

PROBLEM TO BE SOLVED: To provide a concrete block and its laying method, and a method for replacing an IC tag or an annular antenna in the concrete block, which prevent damage to the IC tag or the annular antenna, which enable the evenness of the laid blocks to be secured with ease, and which facilitate the replacement of the IC tag or the annular antenna. SOLUTION: In the concrete blocks in which an upper block 1 is superposed on a lower block 2, a mounting hole for mounting the IC tag and the annular antenna (3) is formed in either of the upper and lower blocks, and an anti-displacement means for suppressing displacement between the upper and lower blocks is provided on a surface where the upper block 1 is superposed on the lower block 2. In particular, the anti-displacement means is constituted by providing either of the upper and lower blocks with a protrusion 20 and providing the other block with a recess 10, so that both of the upper and lower blocks can be fitted together. COPYRIGHT: (C)2008,JPO&INPIT