MOLD FOR CONCRETE MOLDING HAVING HOLLOW PART

摘要

PROBLEM TO BE SOLVED: To easily separate cured fluid concrete molding from a mold. SOLUTION: The fluid concrete is injected into the mold for molding a concrete molding which has an inner frame 1, an outer frame 2, and a hollow part. The mold, which is separated after the curing of the fluid concrete, is equipped with a peeling/moving means 3 which peels a molded article 10 of concrete and the inner frame 1 and moves the inner frame 1. The inner frame 1 can reversibly take two modes of an initial shape and a shape during demolding of the shape change of the inner frame 1 by temperature giving and has an energy accumulation structure having an inner frame slit 12 for accumulating strain energy in the inner frame 1 when the shape changes from the initial shape to the shape during demolding. The peeling/moving means 3 is constituted of a shape memory Ti-Ni alloy spring 4 which changes the shape of the inner frame 1 from the initial shape to the shape during demolding by temperature giving and an inner frame clamp 5 which can restore the shape of the inner frame 1 to the initial shape by the strain energy accumulated in the inner frame 1 itself. COPYRIGHT: (C)2007,JPO&INPIT