| 摘要 |
PROBLEM TO BE SOLVED: To provide a calculation method capable of calculating the thickness of an explosion-proof and fire-resistant covering layer for making fire-resistant covering over a concrete structure. SOLUTION: A specimen 2 is composed of a concrete structural body 4, an explosion-proof/fire-resistant covering layer 3 having a thickness temporarily set up for covering the surface of the concrete structural body, a steel material 5 such as a reinforcing bar or the like arranged at a predetermined depth in the concrete structural body 4 and a temperature sensor 6 provided in the concrete structural body 4 as well as in the explosion-proof/fire-resistant covering layer 3. The specimen is heated according to a predetermined heating condition while the temperature inside the specimen is measured. Thus, the thickness of the explosion-proof/fire-resistant covering layer is calculated based on the measuring result. COPYRIGHT: (C)2009,JPO&INPIT
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