Curing material used in lining concrete curing method and the method

摘要

PROBLEM TO BE SOLVED: To provide a curing method of lining concrete, capable of easily processing a curing material so as to be variably matched to a curvature of an inner peripheral surface of an arch-shaped already placed secondary lining concrete structure at low cost, and capable of reliably curing the secondary lining concrete in a short time.SOLUTION: Covering an inner wall surface 12a of an arch-shaped already placed secondary lining concrete structure 12 in a mountain tunnel 11 with a curing material 20 to cure the secondary lining concrete structure 12 constitutes a curing method of lining concrete. The inner wall surface 12a of the secondary lining concrete structure 12 is covered with respective surfaces 21a of a plurality of curing materials 20, of which surface-side shape is variably matched to a curvature of the inner wall surface 12a of the secondary lining concrete structure 12 with determination of a shape and a depth of a plurality of slits 22 arranged on a backside, through a sheet 30. Subsequently, respective rear faces 21b of the curing materials 20 are held with an arch-shaped holding material 40 to complete a curing structure 10 of the lining concrete.