STRUCTURE FOR PREVENTING EXPLOSIVE FRACTURE OF CONCRETE MEMBER

PROBLEM TO BE SOLVED: To provide a structure for preventing explosive fracture of concrete, which simplifies execution of work, which effectively prevents the explosive fracture of the concrete while using a low-cost material, which satisfies three-hour fire resistance efficiency required by the Bui...

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Hauptverfasser: KOBAYASHI TOSHIMITSU, HIRASHIMA GAKUO, TAKAHASHI KOJI, NISHIDA HIROKAZU, NAKAGOME AKIRA, KAJITA HIDEYUKI, KONDO SATORU, UESUGI HIDEKI, KIKUTA SHIGEMI, TAKAHASHI ICHIRO, UMEMOTO MUNEHIRO, SUGINO EIJI, YOSHINO SHIGERU, NONAKA SUGURU, INOUE CHO, MATSUDO MASASHI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a structure for preventing explosive fracture of concrete, which simplifies execution of work, which effectively prevents the explosive fracture of the concrete while using a low-cost material, which satisfies three-hour fire resistance efficiency required by the Building Standard Law, and which can hold a concrete temperature in a reinforcement position (as a measure, a position at a distance of 50 mm from a concrete surface) to 200°C or lower. SOLUTION: A surface of a concrete member is covered with a calcium silicate plate with a thickness of 25 mm or more, or covered with a ceramic-based fire resistive covering material with a thickness of 20 mm or more, which preferably contains a supersulphated calcium aluminate. COPYRIGHT: (C)2005,JPO&NCIPI