| 摘要 |
PROBLEM TO BE SOLVED: To provide a lightweight embedded material which prevents water entering a slab through a crack from entering a recess. SOLUTION: In this lightweight embedded material 1, a cover body 3 is installed on the undersurface of an embedded material body 2; a locking implement 10 is protruded on the undersurface of the cover body 3; and the cover body 3 has a protrusion 6 on the top surface fitted into the recess 5 of the embedded material body, so as to be detachably installed in the embedded material body 2. COPYRIGHT: (C)2008,JPO&INPIT
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