| 摘要 |
PROBLEM TO BE SOLVED: To eliminate problems in dropping waterdrops onto an unhardened concrete product during the curing and producing marks of the dropped waterdrops by surely recovering the waterdrops by dew condensation dropped along inwardly directed flanges in a curing chamber formed by arranging the inwardly directed flanges at edges of each unit ceiling panel, mutually butting the inwardly directed flanges of the plural unit ceiling panels, mutually tightening the inwardly directed flanges with bolts and forming a ceiling panel. SOLUTION: This steam curing chamber is obtained by extendedly arranging hooked inwardly directed flanges 1b at edges of a unit ceiling panel 1, mutually butting the hooked inwardly directed flanges of the adjacent unit ceiling panels 1, mutually tightening the hooked inwardly directed flanges 1b with bolts and thereby forming a ceiling panel. In this case, conduits 8 for receiving waterdrops due to dew condensation flowing down along the hooked inwardly directed flanges 1b are attached to the hooked inwardly directed flanges 1b. |
