| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method of a concrete slab which can effectively narrow the width of a temperature crack which may be generated in a mass concrete slab, and can effectively reduce the number of the temperature cracks. SOLUTION: The construction method is used for the concrete slabs 10, 20 which constitute an underground structure 100. A plurality of linear pipe lines 2 are placed at intervals in a form 1 used for a slab. After pouring concrete in the form 1, cold catalyst air or warm catalyst air is made to flow into each of the pipe lines 2. It is desirable that the air flowing into each of the lines 2 until the temperature of the poured concrete reaches a maximum value, and that the flow of the air is stopped when the temperature of the concrete has reached a nearly maximum value. COPYRIGHT: (C)2010,JPO&INPIT
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