Title:
コンクリート躯体の表面を所定の深さではつる方法
Document Type and Number:
Japanese Patent JP6868437
Kind Code:
B2
Abstract:
To provide a method for shaving off a surface of a concrete skeleton without requiring a special device and efficiently without imposing a large burden on a worker.SOLUTION: A plurality of first slits 3 parallel to each other and a plurality of second slits 5 orthogonal to the first slits are formed in a surface 2 of a concrete skeleton 1 and a plurality of charge holes 4 are formed along the first slits at a center between the plurality of first slits adjacent to each other. An explosive 6 is disposed in the charge hole 4. A depth from the surface 2 of the concrete skeleton 1 to a center of the explosive 6 is equal to or larger than a depth of the first slit 3 which is shaved off. Further, a distance from the center of the explosive 6 to the bottom of the first slit 3 is equal to or less than a detonation distance (a distance that the explosive can generate a crack on the free surface).SELECTED DRAWING: Figure 4
Inventors:
Hiroshi Yamaji
Junichiro Nakamori
Junichiro Nakamori
Application Number:
JP2017064857A
Publication Date:
May 12, 2021
Filing Date:
March 29, 2017
Export Citation:
Assignee:
Sumitomo Mitsui Construction Co., Ltd.
International Classes:
E04G23/02; E01C7/14; E01D19/12; E01D22/00; E04G23/08
Domestic Patent References:
| JP6026295A | ||||
| JP58146665A | ||||
| JP61186673A | ||||
| JP2014001912A | ||||
| JP2001021300A |
Attorney, Agent or Firm:
Patent business corporation Oshima patent office