CONCRETE WALL AIRTIGHTNESS MEASURING DEVICE AND AIRTIGHTNESS EXAMINING METHOD USING THE SAME

PROBLEM TO BE SOLVED: To provide a concrete wall airtightness measuring device and an airtightness examining method that uses using the concrete wall airtightness measuring device, capable of measuring even when a concrete wall surface is a curved surface of tunnel lining, or the like. SOLUTION: The concrete wall airtightness measuring device is constituted of an air pressure regulating box 10 and a fixing tool 5 for mounting the air-pressure regulating box 10 in close contact with the concrete wall surface 20. The air-pressure regulating box 10 comprises a rubber frame 1, a flexible cover plate 2 sealing the upper face of the rubber frame 1, and a plurality of cylindrical columns 8 fixed toward the internal space of the rubber frame 1. The fixing tool 5 is constituted of planar frames 5a, provided parallel at positions to press two opposed rubber outer frames 1a of the square rubber frame 1 from the top of the cover plate 2, and curved face frames 5b orthogonal to the two planar frames 5a and fixed orthogonally to the two plane frames 5a, at positions of pressing two remaining rubber outer frames 1a and provided with a plurality of crimp adjusters 6, in the two directions of the cover plate. COPYRIGHT: (C)2009,JPO&INPIT