Sheet and system for curing concrete, concrete curing method, and method for producing a concrete structure

Patent metadata

Field	Value
Publication number	US-10472834-B2
Application number	US-201515314520-A
Country	US
Kind code	B2
Filing date	May 29, 2015
Priority date	May 30, 2014
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

To provide a sheet and a system for curing concrete, in which the moisture amount to be used is small and which are able to reduce temporal and local variations in the moisture amount supplied to the concrete surface, a concrete curing method, and a method for producing a concrete structure. There is provided a concrete curing sheet of some embodiments of the present disclosure having a solid structure group on at least a first surface, the solid structure group having grooves defined between adjacent solid structures, and the grooves transporting water using the capillary phenomenon.

First claim

What is claimed is:

1. A concrete curing method comprising the steps of:
preparing a sheet having a solid structure group on at least a first surface, the solid structure group having grooves defined between adjacent solid structures, and the grooves transporting water using a capillary phenomenon;
holding a state where the first surface of the sheet and the concrete surface face each other and water is interposed between the first surface of the sheet and the concrete surface; and
removing the sheet from the concrete surface after the holding continues for a predetermined time.

2. The concrete curing method according to claim 1 , further comprising the step of arranging a first member provided with at least one function selected from the group consisting of scattering-preventing properties, anti-skid properties, weather resistant properties, heat resistance, scratch resistant properties, thermal insulation properties, heat-shielding properties, heat dissipation properties, heat generating properties, light-shielding properties, and dust resistant properties on a second surface opposing the first surface of the sheet.

3. The concrete curing method according to claim 1 , further comprising the step of arranging a second member provided with wettability or water retention properties on the first surface of the sheet or the concrete surface.

4. The concrete curing method according to claim 1 , further comprising the step of sealing a peripheral edge portion of the sheet and the concrete surface or a peripheral edge portion of an adjacent sheet.

5. A method for producing concrete structures, the method comprising the steps of:
preparing a sheet having a solid structure group on at least a first surface, the solid structure group having grooves defined between adjacent solid structures, and the grooves transporting water using a capillary phenomenon;
holding a state where the first surface of the sheet and the concrete surface face each other and water is interposed between the first surface of the sheet and the concrete surface; and
forming cured concrete by removing the sheet from the concrete surface after the holding continues for a predetermined time.

Assignees

• 3M Innovative Properties Co

Inventors

• Watanabe Norihisa
• Ishizuka Tatsunori
• Toriumi Naoyuki
• Morimoto Hitoshi

Classifications

• E04G21/246 Primary

  specially adapted for curing concrete in situ, e.g. by covering it with protective sheets · CPC title

• C04B40/04

  Preventing evaporation of the mixing water (permanent coverings C04B41/00) · CPC title