| 摘要 |
PROBLEM TO BE SOLVED: To remove a separator and a pipe fitted with the separator inside to form a thin hole that penetrates a concrete skeleton and can be blocked up. SOLUTION: The separator 20 fitted at its end with a nut 40 in a swingable and freely movable manner is inserted through concrete forms 10, and its intermediate part is covered with a soft resin tube 30. After concrete is placed, the separator 20, the soft resin tube 30 and the nut 40 are all removed. The resin tube 30 can be hooked and pulled out using a claw tool 90 as it is soft. Since the soft resin tube 30 is formed as a spiral annular body 31, the whole of it can be removed from the concrete skeleton 100 gradually from the end even if the tube is long. The nut 40 is inclined and fitted into the separator 20, and the separator 20 can also be disposed inclined with respect to the form 10. Nonshrink mortar can be injected into a hole formed of a mark of the inclined separator without leaving an air gap. The hole can thereby be easily blocked up. COPYRIGHT: (C)2011,JPO&INPIT
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