PLACING TYPE CONCRETE FORM FOR UNDERGROUND WALL

摘要

PURPOSE:To improve workability, to prevent dew condensation onto the surface of forms and to form the forms in weight lighter than current forms and in strength higher than the current forms. CONSTITUTION:When a concrete wall 14 is placed by using forms 10, a water permeable layer 28 is impregnated with the cement paste of concrete, and the forms 10 and the concrete wall 14 are connected by the impregnation. Excess water before concrete is cured, leaking water after curing or the like is flowed into a headrace 30 through the water permeable layer 28, and flowed down in the head race 30 and discharged from the bottom of the forms 10. Heat from the concrete wall 14 is interrupted by a heat-insulating layer 24.