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1.发明专利
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公开(公告)号：JP5366695B2
公开(公告)日：2013-12-11
申请号：JP2009178278
申请日：2009-07-30
申请人： 株式会社大林組 , 石川島建材工業株式会社
IPC分类号： C04B28/02 , C04B14/48 , C04B16/06 , C04B18/14 , C04B111/28
CPC分类号： Y02W30/94
摘要： PROBLEM TO BE SOLVED: To provide a fireproof concrete which can prevent damage of a surface layer part thereof caused by explosive fracture. SOLUTION: The fireproof concrete 1 is produced by blending cement 9, fine aggregate 2, coarse aggregate 7, water, organic fibers 4 vaporizing at a prescribed temperature (a temperature that the concrete 1 is assumed to reach in case if fire or the like, e.g. about 250 to 500°C), an admixture 5 for improving the separation resistance of the material, and steel fibers 6 for improving the tenacity of the concrete 1 after hardening at a prescribed ratio. The aspect ratio being a ratio of length to thickness of the organic fiber 4 is in the range of 410 to 700. COPYRIGHT: (C)2010,JPO&INPIT
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公开(公告)号：JP5358393B2
公开(公告)日：2013-12-04
申请号：JP2009243647
申请日：2009-10-22
申请人： 株式会社大林組 , 石川島建材工業株式会社
摘要： PROBLEM TO BE SOLVED: To provide a frame capable of easily extracting the air bubbles of the surface part coming into contact with the frame when a segment is manufactured using highly fluidized concrete, and a method for manufacturing a segment using the same. SOLUTION: The outer peripheral surface frame plate 3d in the frame 3 is installed on a circumferential edge face frame plate 3a and an axial edge face frame plate 3b as a lid frame. A plurality of opening parts 3f enabling the insertion of an air bubble extracting instrument 6 for extracting the air bubbles in the highly fluidized concrete 9 are provided to the edge part of the outer peripheral surface frame plate 3d and the air bubble extracting instrument 6 can be drawn out of and inserted into the opening parts 3f by accompanying the casting of the concrete. COPYRIGHT: (C)2010,JPO&INPIT
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