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1. 发明专利

JPH11278960A Production of segment using concrete having high fluidity 失效
标题翻译：使用具有高流动性的混凝土生产分段
公开(公告)号：JPH11278960A
公开(公告)日：1999-10-12
申请号：JP8161198
申请日：1998-03-27
申请人： Kajima Corp , Sumitomo Osaka Cement Co Ltd , 住友大阪セメント株式会社 , 鹿島建設株式会社
发明人： NAGAOKA SEIICHI , SUZUKI HIROAKI , EDAMATSU YOSHINOBU , MATSUMOTO SEIJIRO , YOSHIMURA MUNEO , SHINODA YOSHINOBU , SATO TAKURO , MURAI YASUHIKO
IPC分类号： C04B40/02
CPC分类号： C04B40/024 , C04B28/00 , C04B32/02 , C04B41/00
摘要： PROBLEM TO BE SOLVED: To economically and efficiently obtain a segment forming neither air pock mark nor water pock mark, by placing a concrete having high fluidity in a closed type frame mold, rapidly curing the concrete with steam at a specific temperature, removing the frame mold after a fixed time and finishing the surface of the concrete by a trowel.
SOLUTION: A concrete 5 having high fluidity is placed in a frame mold 3 for producing a closed type segment, equipped with a main body frame mold 1 and a cover frame mold 2. The concrete 5 having high fluidity has, for example, fluidity of about 30% water powder ratio, about 60±5 cm, slump flow value and about 4.5% air amount and high self filling and does not require vibration fastening causing noise and vibration. Immediately after the placing of the concrete, the concrete is cured with steam in an atmosphere at 30-50°C and the hardening of the concrete 5 is mildly promoted. The cover frame mold 2 is removed 2 to 4 hours after the placing and the surface of the concrete 5 capable of retaining the shape is finished by a trowel to smooth the unevenness. Then the concrete 5 is continuously cured with steam for a fixed time, is hardened and removed from the main body frame mold 1.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：为了经济有效地获得既不形成空气标记也不形成水痕迹的区段，通过将具有高流动性的混凝土放置在封闭型框架模具中，在特定温度下用蒸汽快速固化混凝土，移除框架模具经过一段固定的时间，并用t刀整理混凝土的表面。解决方案：具有高流动性的混凝土5被放置在用于制造具有主体框架模具1和盖框模具2的封闭型段的框架模具3中。具有高流动性的混凝土5具有例如流动性约30％水粉比，约60±5厘米，坍落度流量值和约4.5％的空气量和高自填，不需要振动紧固，造成噪音和振动。在混凝土放置后，混凝土在30-50℃的气氛中用蒸汽固化，并且混凝土5的硬化得到轻微的提升。盖架模具2在放置后2至4小时移除，并且能够保持形状的混凝土5的表面被t刀完成以平滑不平坦度。然后将混凝土5用蒸汽持续固化一段固定的时间，并从主体框架模具1中硬化和去除。

2. 发明专利

JP2003003423A Composite floor-slab light-weight concrete structure for bridge upper-section work 有权
标题翻译：用于桥梁上段工程的复合地板 - 轻质混凝土结构
公开(公告)号：JP2003003423A
公开(公告)日：2003-01-08
申请号：JP2001187975
申请日：2001-06-21
申请人： Civil Engineering Research Institute Of Hokkaido , Kajima Corp , 独立行政法人北海道開発土木研究所 , 鹿島建設株式会社
发明人： MITAMURA HIROSHI , IKEDA KENJI , SHINODA YOSHINOBU , SAKATA NOBORU , YANAI SHUJI
IPC分类号： E01D1/00 , E01D19/12 , E01D101/30
摘要： PROBLEM TO BE SOLVED: To obtain a light-weight composite floor-slab concrete structure having thin thickness for bridge upper-section works. SOLUTION: In the composite floor-slab light-weight concrete structure for the bridge upper-section works, a panel-shaped floor slab having a cavity on the inside and being made of a steel plate is installed to a pier, and the inside of the cavity of the floor slab made of steel is filled with light-weight and high superplasticized concrete, to which light-weight aggregate is blended so that the mass of unit volume after curing reaches 2000 Kg/m or less and materials are blended so as to have a slump flow of 500 mm or more. In the light-weight high superplasticized concrete, light-weight aggregate having density of 1.3 to 1.7 in saturated surface-dry conditions in the case of prewetting and a maximum size of 15 mm is used as coarse aggregate, and fly-ash is blended as an admixture and a high-performance AE water reducing agent and a thickener as additives.
摘要翻译：要解决的问题：获得桥梁上段工程厚度薄的轻质复合地板 - 混凝土结构。解决方案：在桥梁上段工程的复合地板轻型混凝土结构中，将一个具有内部空腔并由钢板制成的板状地板安装在码头上，由钢制成的地板的空腔中填充轻质高强度的超塑性混凝土，混合轻质骨料，固化后的单位体积质量达到2000Kg / m 3以下，材料为混合以具有500mm或更大的坍落度流动。在重量轻的高超塑性混凝土中，在预润湿的情况下，在饱和表面干燥条件下的密度为1.3〜1.7，最大尺寸为15mm的轻质骨料用作粗骨料，将粉煤灰作为作为添加剂的外加剂和高性能AE减水剂和增稠剂。

3. 发明专利

JP2001192253A FIBER-INCORPORATING HIGHLY FLOWING CONCRETE 失效
公开(公告)号：JP2001192253A
公开(公告)日：2001-07-17
申请号：JP2000001690
申请日：2000-01-07
申请人： KAJIMA CORP
发明人： HIRAISHI YOSHIKI , SAKATA NOBORU , YANAI SHUJI , SHINODA YOSHINOBU
IPC分类号： C04B28/02 , C04B16/06
摘要： PROBLEM TO BE SOLVED: To obtain a highly flowing concrete excellent in hardening property such as bending strength without deteriorating fresh properties such as flow characteristic even if a short fiber is mixed with the concrete. SOLUTION: In the highly flowing concrete obtained by blending water, cement, a coarse aggregate, the short fiber and a mixing agent, and having >=50 cm slump flow value, a corrugate polypropylene short fiber is blended as the above fiber.

4. 发明专利

JP2001019518A ADMIXTURE FOR CONCRETE HAVING HIGH FLUIDITY 失效
公开(公告)号：JP2001019518A
公开(公告)日：2001-01-23
申请号：JP18855099
申请日：1999-07-02
申请人： KAJIMA CORP
发明人： SAKATA NOBORU , SHINODA YOSHINOBU
IPC分类号： C04B24/38 , C04B24/22 , C04B24/26 , C04B24/30 , C04B28/02 , C04B103/32
摘要： PROBLEM TO BE SOLVED: To obtain the subject admixture capable of solving troublesome of addition operation while using a general-purpose high-performance (AE) water reducer and imparting stable fluidity-keeping action by adding wellan gum to a high-performance (AE) water reducer diluted to a specific concentration. SOLUTION: This admixture for concrete having high fluidity is obtained by adding 0.1-1 wt.% wellan gum to a high-performance AE water reducer or high-performance water reducer diluted so that solid content concentration becomes 10-40%. The admixture containing the wellan gum is preferably 100-200 centipoise viscosity and exhibits good fluidity and hardly causes precipitation even when left to stand. Therefore, the admixture is suitable for automatic measurement or automatic addition system in ready-mixed concrete plant. The dilution degree of the high-performance (AE) water reducer used for the admixture has an adequate range according to the kinds. In the case of carboxylic acid-based high performance (AE) water reducer, it is preferable to dilute the reducer so that the solid content concentration becomes 10-40%.

5. 发明专利

JP2001002459A PRODUCTION OF CONCRETE USING UNWASHED SAND GRAVEL 失效
公开(公告)号：JP2001002459A
公开(公告)日：2001-01-09
申请号：JP16914899
申请日：1999-06-16
申请人： KAJIMA CORP
发明人： SAKATA NOBORU , WATANABE KENZO , SHINODA YOSHINOBU
IPC分类号： B28C7/04 , C04B14/04 , C04B14/06 , C04B18/08 , C04B28/02 , C04B111/00
摘要： PROBLEM TO BE SOLVED: To stably produce concrete having a proper slump value even if sand gravel collected from river-bed is used as it is unwashed as concrete aggregate. SOLUTION: The concrete using the unwashed sand gravel is produced by kneading the unwashed sand gravel with water and cement and adding water and flyash into the kneaded material by adjusting their ratio. For example, the unwashed sand gravel, water and cement are charged into a drum of an agitator car and kneaded, and when the rotation load of the drum is out of a fixed value, kneaded with the addition of flyash slurry adjusted in water/ powder ratio.

6. 发明专利

JP2000158435A QUALITY CONTROL METHOD FOR CONCRETE USING UNWASHED RIVERBED PEBBLES AS AGGREGATE 失效
公开(公告)号：JP2000158435A
公开(公告)日：2000-06-13
申请号：JP33990098
申请日：1998-11-30
申请人： KAJIMA CORP
发明人： SAKATA NOBORU , WATANABE KENZO , SHINODA YOSHINOBU , KOSHIZAWA SATORU , SHIMODERA SHINICHI , MUTAGUCHI SHIGERU , EZAKI SHINYA
IPC分类号： E02B7/00 , B28C5/42 , B28C7/12
摘要： PROBLEM TO BE SOLVED: To perform an appropriate concrete quality control by setting a slump as specified when unwashed riverbed pebbles are used as aggregates. SOLUTION: When a solid content obtained by dry-blending unwashed riverbed pebbles measuring 80 mm or less as aggregates with a specified amount of cement is to be charged into a stirring container aboard an agitator truck together with water and an intimate mixing agent and the mixture is to be kneaded into a concrete, an initial charge of water is set to be less than originally estimated quantity and then the amount of water corresponding to the slump, of the concrete contained in the stirring container, which is estimated based on the hydraulic pressure of a hydraulic motor for rotating the stirring container of the agitator truck or water and the intimate mixing agent are additionally charged. In this way, the slump of the concrete contained in the stirring container is slightly increased to obtain a specified slump.

7. 发明专利

JP2000109350A PREPARATION OF AGGREGATE FOR DAM CONCRETE 失效
公开(公告)号：JP2000109350A
公开(公告)日：2000-04-18
申请号：JP28100998
申请日：1998-10-02
申请人： KAJIMA CORP
发明人： SAKATA NOBORU , KOSHIZAWA SATORU , SHIMODERA SHINICHI , TAKAYASU EIZO , WATANABE KENZO , NAKAYA YOSHIAKI , SHINODA YOSHINOBU
IPC分类号： C04B14/02 , C04B14/04 , C04B20/00
摘要： PROBLEM TO BE SOLVED: To facilitate the sieving of fine aggregate and coarse aggregate by classifying riverbed gravel in an unwashed state to the gravel of specific grain sizes, passing the gravel through the inside of a water tank to sufficiently wet the surfaces with water and to allow the mud components sticking to the surfaces to settle on the water bottom to separate the mud components, thereby managing the surface water rate of the riverbed gravel to a stable value. SOLUTION: Riverbed gravels are classified by a 80-mm sieve and a 10-mm sieve to two; a grain size

8. 发明专利

JP2001260110A SURFACE FINISHING METHOD FOR LIGHT-WEIGHT AGGREGATE CONCRETE 失效
公开(公告)号：JP2001260110A
公开(公告)日：2001-09-25
申请号：JP2000077355
申请日：2000-03-21
申请人： KAJIMA CORP
发明人： YANAI SHUJI , SAKATA NOBORU , HIRAISHI YOSHIKI , SHINODA YOSHINOBU
IPC分类号： B28B1/10 , B28B1/14 , B28B1/50
摘要： PROBLEM TO BE SOLVED: To provide a surface of a light-weigh aggregate concrete as a smooth and beautiful finish surface by a method wherein when surface finishing for the light-weight aggregate concrete is to be carried out, without paying so much attention to time for starting finish operation, an operation wherein the aggregate afloat on the surface is sunk to an inside is lessened. SOLUTION: In order to solve the abovementioned problem the light-weight aggregate concrete material placed into a form is solidified by fastening by a vibrator, the light-weight aggregate floating up by the vibration is sunk into the light-weight aggregate concrete material by pushing wire netting placed on the surface thereto, and a surface formed by placing the light-weight aggregate concrete is provided with a beautiful surface without any irregularity.

9. 发明专利

JPH0762612A JOINT METHOD OF PRECAST CONCRETE FORM 失效
公开(公告)号：JPH0762612A
公开(公告)日：1995-03-07
申请号：JP21456693
申请日：1993-08-30
申请人： MINI PUBLIC WORKS , SENTAN KENSETSU GIJUTSU CENTER , OHBAYASHI CORP , CHICHIBU ONODA CEMENT CORP , KAJIMA CORP , SATO KOGYO , SHIMIZU CONSTRUCTION CO LTD , TAISEI CORP , TAKENAKA DOBOKU , TOBISHIMA CONSTRUCT CO LTD , NISHIMATSU CONSTR CO LTD , JAPAN DEV & CONSTRUCTION , FUJITA CORP , FUDO CONSTRUCTION CO , MAEDA CONSTRUCTION
发明人： SUGIYAMA ATSUSHI , NUKAZAWA KOUJI , HARADA AKIRA , OMORI TOSHITAKA , SHINODA YOSHINOBU , HIRONAKA YOSHIAKI , ABE HISAO , OTOMO TAKESHI , ANDO SHINICHIRO , ISHIZAKI KANJIRO , OGAWARA SHIGEAKI , MATSUI KENICHI , TAKESHITA HARUYUKI , YOSHINO TSUGUHIKO , NAKAJIMA KENJI , YOKOZAWA KAZUO
IPC分类号： E01D19/02 , E04B1/16 , E04B2/86
摘要： PURPOSE:To obtain a joint method of precast concrete forms by which the work is easy and does not require a high assembling accuracy and dispenses with after reinforcements and external forms and further, by which the construction period is reduced and labors are saved. CONSTITUTION:Joint rods 4 parallelly arranged with distributing rods 3, 3 buried in respective PC forms 1, 1 and provided with a specified lap length (1), in the inside of the joint 2 between the PC forms 1, 1 connected to each other, are arranged so as to straddle the PC forms 1, 1 connected with a specified distance (d) from the distributing rods 3, 3. Thereafter, the secondary concrete C2 is placed.

10. 发明专利

JP2001288899A CROSS SECTION REPAIRING METHOD FOR STRUCTURAL MEMBER 失效
公开(公告)号：JP2001288899A
公开(公告)日：2001-10-19
申请号：JP2000102317
申请日：2000-04-04
申请人： KAJIMA CORP
发明人： KANDA TETSUSHI , SHINODA YOSHINOBU , KANEUJI MAKOTO , SAKATA NOBORU , HIRAISHI YOSHIKI
IPC分类号： E01D21/00 , E01D22/00 , E01D101/00 , E04G23/02
摘要： PROBLEM TO BE SOLVED: To provide a cross section repairing method for structural member saving the labor of execution by omitting a complicated process such as a post-execution anchor when removing the deteriorated portion of the concrete structural member and repairing the removed portion with a substitutional material, capable of keeping the integration with an existing skeleton without shortening the life of the structural member, preventing a peeling accident, and reliably extending the service life of a structure. SOLUTION: The deteriorated portion 3 of the concrete member of the concrete structure is removed, and such removed portion 5 is substituted with a high-tenacity fiber-reinforced cement composite material (high-tenacity FRC material) 4.

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