DRIVE-IN TYPE CONCRETE FORM FOR UNDERGROUND WALL.

摘要

Drive-in type concrete forms for an underground wall (10, 56, 60, 62, 64, 74, 76, 78 and 80) include water permeable layers (28) and water conduits (30) for discharging leaked water and the like from a concrete wall (14). When the concrete wall is molded by use of the forms, cement paste of concrete is impregnated in the water permeable layer (28), so that the forms (10, 56, 60, 62, 64, 74, 76, 78 and 80) can be jointed to the concrete wall (14). Surplus water before curing of the concrete, leaked water after the curing of the concrete or the like flow into the water conduits (30) through the water permeable layer, flow down the water conduits (30) and are discharged from the bottom portions of the forms (10, 56, 60, 62, 64, 74, 76, 78 and 80). Furthermore, heat from the concrete wall is insulated by an insulating layer (24) provided closer to the interior of a chamber than the water conduits are.