Title:
ボックスカルバートの施工方法及び保護シート
Document Type and Number:
Japanese Patent JP6866916
Kind Code:
B2
Abstract:
To provide a method for constructing a box culvert which can be easily constructed at the site.SOLUTION: When a box culvert formed of a concrete box body continuously arranged body is constructed in which concrete box bodies 1 having a hollow part 1a are serially arranged so that the hollow part 1a connects each other and a connection joint between the concrete box bodies 1 is filled with a joint 2, at least a hollow side ceiling portion of the connection joint part is covered with a protective sheet 3 having a base material layer formed of a glass cloth filled with a silicone rubber cured product having 10 to 90 hardness by Durometer A hardness meter and a silicone rubber cured product layer that is provided on one surface of the glass cloth and has 10 to 90 hardness by Durometer A hardness meter, and a silicone adhesive layer that is stacked on the silicone rubber cured product layer and has 1 to 60 Asker C hardness; and an adhesive layer is stuck or bonded to a concrete wall of the concrete box bodies 1 to prevent falling and outflow of a joint material from an adhesive joint part.SELECTED DRAWING: Figure 4
Inventors:
Go Nakajima
Application Number:
JP2019205115A
Publication Date:
April 28, 2021
Filing Date:
November 13, 2019
Export Citation:
Assignee:
Shin-Etsu Chemical Co., Ltd.
International Classes:
E02D29/16; C09K3/10; E02D31/04; E03F3/04
Domestic Patent References:
| JP2015108147A | ||||
| JP2012106409A | ||||
| JP2012106480A | ||||
| JP2014025299A | ||||
| JP2006193930A | ||||
| JP2013011060A | ||||
| JP2014070482A | ||||
| JP2004346613A | ||||
| JP10121488A |
Attorney, Agent or Firm:
Hideaki International Patent Office