| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete form of a constitution having excellent carbonic acid gas permeability capable of curing the form in a high strength in a short time by being exposed with a carbonic acid gas. SOLUTION: The concrete form 20 is used to expose the concrete molding 10 with the carbonic acid gas. The form 20 has a mold adapted to a shape of placing the molding 10, a strength durable against placing and a honeycomb 21 structure. A central material of the mold 20 is molded of a plastic. The central material is constituted of a gas permeable sheet provided to perform a role of a panel and fixed to cover the entirety of the central material.
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