| 摘要 |
PROBLEM TO BE SOLVED: To maintain the moist condition of concrete surfaces and to reduce drying cracks at the construction of a tunnel. SOLUTION: A curing system comprises: a support frame freely deformable in such a way as to be along the inner wall surface of a tunnel; an elevating and lowering device for elevating and lowering the support frame into contact with and separation from the inner wall surface of the tunnel; a curing sheet supported by the support frame; and a fixing part to be elevated by the elevating and lowering device to fix the curing sheet in tight contact with the inner wall surface of the tunnel by both the support frame deformed in such a way as to be along the inner wall surface of the tunnel and the support frame. The part of the curing sheet in tight contact with the inner wall surface of the tunnel is made of a water retention member, and its part facing the inside of the tunnel is made of a heat insulation member. COPYRIGHT: (C)2010,JPO&INPIT |
