Title:
INHIBITOR FOR PREVENTING CRACKING OF JOINT OF CONCRETE STRUCTURE, METHOD OF CONSTRUCTING CONCRETE STRUCTURE HAVING JOINT, AND METHOD OF CONSTRUCTING TUNNEL
Document Type and Number:
Japanese Patent JP2019035283
Kind Code:
A
Abstract:
To provide an anti-cracking agent at a joint of a concrete structure, a method of constructing a concrete structure having a joint, and a method of constructing a tunnel capable of preventing the occurrence of a crack along a joint, enhancing the workability of the work therefor and shortening the working time thereof.SOLUTION: The joint anti-cracking agent of the concrete structure comprises 40 to 77 wt.% of a fatty acid-containing compound, 2 to 5 wt.% of a stabilizer, 1 to 3 wt.% of a surfactant, and 15 to 52 wt.% of ion-exchanged water. After casting the precast concrete, the anti-cracking agent of the joint of the concrete structure is applied to the joining surface of the precast concrete, and post-casting concrete is placed in contact with the joining surface coated with the anti-cracking agent.SELECTED DRAWING: Figure 1
Inventors:
SASAKI YASUYOSHI
MATSUMOTO TATSUHIKO
MATSUMOTO TATSUHIKO
Application Number:
JP2017158221A
Publication Date:
March 07, 2019
Filing Date:
August 18, 2017
Export Citation:
Assignee:
ALPHA KAKEN CO LTD
International Classes:
E04G21/02; C04B41/62; E04B1/62; E21D11/10; E21D11/38
Attorney, Agent or Firm:
Atsushi Suda
Shuji Kusunoki
Shuji Kusunoki