| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete core sampling apparatus which, while preventing the ejection of pressurization water, earth, and sand on the back side from the wall of a concrete structure with its back loaded with hydraulic pressure to the surface side of the wall, can stably and easily sample the concrete core through the wall. SOLUTION: The concrete core sampling apparatus 10 comprises a core cutter 12, a forward/backward moving rod 13 connected to the rear of the core cutter 12, a forward/backward driving device 15 having a rotary driving mechanism 14 supporting the rod 13, a cylindrical sealed tube 16 which can seal pressurized water in the inside, a water supply part 20, and a drain part 21. In the cylindrical sealed tube 16, the core cutter 12 is arranged forward/backward movably opposite to a core sampling place 17. A valve device 23 which, while being filled with the pressurized water by openably/closably partitioning and blocking a part on one opening end surface 16a side, enables opening of a water stop cap 18 and a pressure gage 24 measuring the hydraulic pressure of the inside are installed in the cylindrical sealed tube 16. COPYRIGHT: (C)2009,JPO&INPIT
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