Title:
METHOD FOR SEALING CONCRETE STRUCTURE
Document Type and Number:
Japanese Patent JP2019060169
Kind Code:
A
Abstract:
To provide a sealing method that can seal joints stably even when the width of a joint fluctuates because of expansion, contraction or the like of a concrete structure.SOLUTION: The sealing method includes: cutting a joint plate 15 provided inside a joint 11 of a cut-and-cover tunnel 1 up to a predetermined depth and removing it, and suctioning and removing excess water and pieces or the like of the joint plate 15 using a vacuum cleaner; disposing a temporary sealing material 14 so as to cover a space between the joint plate 15 with the predetermined depth and side surfaces 11a, 11a of the joint 11 and disposing a back-up material 12; injecting a dispersant into the surface side of the back-up material 12 inside the joint 11 up to the surfaces of blocks 8, 9 on both sides of the joint 11 and placing a protection sheet on the surface of the dispersant; polymerizing water soluble organic monomers of the dispersant inside the joint 11 to form a sealing body 13 including polymeric hydrogel with a three-dimensional network structure, which is formed from a polymer of water soluble organic monomers and water-swelling clayey minerals; removing the protection sheet after forming the sealing body 13.SELECTED DRAWING: Figure 2
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Inventors:
TAKEHISA KAN
YAMAMOTO TAKUJI
MATSUMOTO TAKASHI
YAMAMOTO TAKUJI
MATSUMOTO TAKASHI
Application Number:
JP2017186605A
Publication Date:
April 18, 2019
Filing Date:
September 27, 2017
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS
International Classes:
E02D31/02; C08F2/44; C08F292/00; E02B3/16; E02B5/02; E02B7/00; E02D29/00; E02D29/09; E03F3/04
Domestic Patent References:
| JP2009256971A | 2009-11-05 | |||
| JP2013130050A | 2013-07-04 | |||
| JP2010254800A | 2010-11-11 | |||
| JP2010185247A | 2010-08-26 | |||
| JPH11228941A | 1999-08-24 | |||
| JP2002053762A | 2002-02-19 | |||
| JP2010189965A | 2010-09-02 | |||
| JP2002242283A | 2002-08-28 |
Foreign References:
| WO1999062977A1 | 1999-12-09 |
Attorney, Agent or Firm:
Atsushi Morikawa