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63. 发明专利

JPS56139292A MANUFACTURE OF STEEL BEAM 失效
公开(公告)号：JPS56139292A
公开(公告)日：1981-10-30
申请号：JP4200480
申请日：1980-04-02
申请人： OZAWA CONCRETE KOGYO KK
发明人： OZAWA SEIICHI
IPC分类号： E04C3/06 , B23K9/00 , E04C3/04 , E04C3/10
摘要： PURPOSE:To remarkably improve the loading capacity of beams, by welding the first material into which a compressive force is introduced, on the second material, and then, by inroducing another compressive force into the second material after the compressive force introduced into the first material is removed. CONSTITUTION:At the both ends of long flat flange material 2 of the first material 1, anchor plates 4 and nuts are tightened into small holes at four corners through PC steel material 3. The second material 5 is a long material having a T-shaped cross- section and formed by welding lower flange material 6 and web material 7, and no compressive force is introduced into this material. The steel beam having I-shaped cross-section is formed by welding the upper side of material 7 onto the central part of material 2 compressed along the direction of length. Since material 2 partially restores to the original shape when plate 4 and steel material 3 are removed, the beam becomes to have a gently curved shape in which the central part is lifted. In this way, the bending moment caused by the tare and the load loaded on the beam is countervailed.

65. 发明专利

JPS53139616A METHOD OF MAKING CONCRETE PRODUCTS USING CLOSEDDTYPE MOLD 失效
公开(公告)号：JPS53139616A
公开(公告)日：1978-12-06
申请号：JP5372777
申请日：1977-05-12
申请人： OZAWA CONCRETE KOGYO KK
发明人： OZAWA SEIICHI
IPC分类号： C04B40/00 , B28B11/00

69. 发明专利

JPH115207A MANUFACTURE OF FIBER REINFORCED CONCRETE PLATE 失效
公开(公告)号：JPH115207A
公开(公告)日：1999-01-12
申请号：JP15940097
申请日：1997-06-17
申请人： OZAWA CONCRETE KOGYO KK
发明人： TSURUTA TAKESHI
IPC分类号： B28B1/52 , B28B7/18 , B28B7/24
摘要： PROBLEM TO BE SOLVED: To provide the method of manufacturing a fiber reinforced concrete plate suitably used for the repairing and thickening process of a floor slab or the like. SOLUTION: A form is formed by vertically arranging a plurality of supporting plates 1, in a plurality of mounting holes 2 of each of which the small diametral portion 4 of a pin 3 equipped with a large diametral portion 5 and the small diametral portion 4 is inserted, at fixed intervals. By pouring fiber reinforced concrete 6 in the form and after the hardening of the concrete, the form is disjoined and the pins are removed so as to manufacture fiber reinforced concrete plates 6.

70. 发明专利

JPH10291874A POLYMER IMPREGNATED CONCRETE 失效
公开(公告)号：JPH10291874A
公开(公告)日：1998-11-04
申请号：JP9925897
申请日：1997-04-16
申请人： OZAWA CONCRETE KOGYO KK
发明人： TSURUTA TAKESHI
IPC分类号： E04B2/86 , C04B16/06 , C04B41/63 , D01F6/06
摘要： PROBLEM TO BE SOLVED: To obtain a concrete suitably used for applications such as a buried frame mold needing high strength and high durability by using a stretched polypropylene fiber as a reinforcing fiber. SOLUTION: The polymer impregnated concrete uses the stretched polypropylene fiber as the reinforcing fiber. The thickness, length, amount or the like of the fiber to be added to a concrete base material is particularly not limited and can properly be set based on preliminary test or the like. In the polymer impregnated concrete obtained by impregnating a concrete base material with a monomer in which a polymerization catalyst is dissolved, heating and polymerizing the monomer and integrating the produced resin with the concrete base material, the stretched polypropylene fiber is used as the reinforcing fiber for concrete base material. The polymer impregnated concrete is free from the heat deterioration like the conventional vinylon fiber, is free from the generation of rust like steel fiber and is a thin and high strength material even thin in thickness.

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