| 摘要 |
PROBLEM TO BE SOLVED: To avoid cracking in ultra-high strength concrete during curing, and to shorten a curing period. SOLUTION: When the ultra-high strength concrete 3 is cured, a heat insulating form 2 is employed. In the present invention, the heat insulating form 2 is constructed by laminating a plurality of heat insulating members 1 on each other, and then the heat insulating members 1 are successively detached. The procedure and timing of detaching the heat insulating members 1 are obtained based on analysis by the finite element method. By adequately determining the thickness of the initial heat insulating form 2, initial cracking (cracking occurring before first form removal is carried out) can be avoided. Further by adequately determining the timing at which the heat insulating members 1 are detached, cracking at the time of form removal (i.e. cracking caused by thermal shock) can be avoided, and thus the curing period before detachment of all the heat insulating members 1 can be shortened. COPYRIGHT: (C)2009,JPO&INPIT
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