Title:
TREATING METHOD OF PLACING JOINT FACE OF CONCRETE
Document Type and Number:
Japanese Patent JP3239135
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a setting retarder from flowing out of a placing joint face due to water or from being dissolved in the water.
SOLUTION: A form 10 is equipped with a pair of side boards 10a and 10b provided oppositely and an end board 10c provided on the placing joint face side. On the inner side of the end board 10c, an indented part 10d for providing an indentation on a placing joint face is provided along the longitudinal direction over the full length thereof. On the surface of this indented part 10d, a setting retarder 12 formed in the shape of a thin sheet is provided over the whole thereof. The setting retarder 12 is bonded with a bonding agent or fixed with a metal stitcher or the like and it is not dissolved in acid or neutral water, but is subjected to hydrolisis with alkaline water and makes concrete reveal a setting retardation property.
Inventors:
Takayoshi Hirata
Shigeru Aoki
Hiroyuki Kawashima
Yoshiyuki Ikemoto
Shigeru Aoki
Hiroyuki Kawashima
Yoshiyuki Ikemoto
Application Number:
JP28504195A
Publication Date:
December 17, 2001
Filing Date:
November 01, 1995
Export Citation:
Assignee:
Obayashi Corporation
Daicel-Degussa Corporation
Daicel-Degussa Corporation
International Classes:
E04G21/02; (IPC1-7): E04G21/02
Domestic Patent References:
| JP4222771A | ||||
| JP54159443A | ||||
| JP8309717A | ||||
| JP512545U |
Attorney, Agent or Firm:
Masatoshi Matsumoto
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