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1. 发明专利

JP2005022931A Method for reducing self-shrinkage of superhigh strength concrete 有权
标题翻译：减少超强度混凝土自收缩的方法
公开(公告)号：JP2005022931A
公开(公告)日：2005-01-27
申请号：JP2003191784
申请日：2003-07-04
申请人： Kajima Corp , Nippon Mesaraito Kogyo Kk , 日本メサライト工業株式会社 , 鹿島建設株式会社
发明人： TAKADA KAZUNORI , YANAI SHUJI , ICHINOMIYA TOSHIMICHI , WATABE TAKAHIRO , HISHIKI TAKEYOSHI , MORITA YUKIHIKO , TAIRA YOHEI , ONO TOSHIO , KASAI HIROSHI
IPC分类号： C04B14/02 , C04B14/04 , C04B28/02
CPC分类号： C04B28/02 , C04B2111/34 , C04B2201/52 , C04B22/008 , C04B38/08
摘要： PROBLEM TO BE SOLVED: To reduce self-shrinkage occurring in superhigh strength concrete at a low cost. SOLUTION: A method for reducing the self-shrinkage of the superhigh strength concrete comprises substituting an amount of ≤30 vol.% of coarse aggregate for artificial lightweight aggregate and blending an expansive additive in an amount of 30 kg or less per 1 m 3 concrete and/or a shrinkage-reducing agent in an amount of ≤4 wt.% based on a unit binding material, in blending of the superhigh strength concrete having a compressive strength of >100 N/mm 2 . By the method, the degree of the self-shrinkage of the superhigh strength concrete can be suppressed to ≤0-600 μm/m at the material age of 91 days. An artificial lightweight aggregate having a water absorption rate of >5 to 20%, a crushing strength of 1,000-2,000 N, and a density in oven-dried condition of 1.4-2.0 g/cm 3 is used. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：以低成本降低发生在超高强度混凝土中的自收缩。解决方案：一种减少超高强度混凝土自收缩的方法包括：将少于30体积％的粗骨料替代人造轻骨料，并将每1公斤30公斤以下的膨胀添加剂混合混合物和/或相对于单位粘合材料为≤4重量％的减缩剂，在混合具有> 100N / cm 2的抗压强度的超高强度混凝土时，毫米 2 。通过该方法，超高强度混凝土的自收缩程度在91天的材料年龄可以被抑制在≤0-600μm/ m。使用吸水率> 5〜20％，抗破碎强度1000〜2000N，烘箱干燥条件下的密度为1.4-2.0g / cm 3的人造轻骨料。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2004068341A Bridge superstructure 有权
公开(公告)号：JP2004068341A
公开(公告)日：2004-03-04
申请号：JP2002226998
申请日：2002-08-05
申请人： Kajima Corp , 鹿島建設株式会社
发明人： ICHINOMIYA TOSHIMICHI , HISHIKI TAKEYOSHI , TAKADA KAZUNORI , TAIRA YOHEI , FUJII HIDEKI , WATABE TAKAHIRO , YANAI SHUJI , KAMISAKODA KAZUTO , ENDO CHIKASHI
IPC分类号： E01D1/00 , C04B28/02 , C04B111/20 , E01D2/00 , E01D2/04 , E01D101/24
摘要： PROBLEM TO BE SOLVED: To construct a box girder by using a precast concrete board as a web in bridge superstructure works. SOLUTION: In a bridge superstructure in which the web is installed between a lower floor slab and an upper floor slab and the box girder is constituted, the web is composed of a prestressed concrete board in which a PC steel material is tensioned in the vertical direction, and extremely-stiff strength concrete having 28-day compressive strength in 100 to 180 N/mm 2 is used as the concrete of the prestressed concrete board. Extremely-stiff strength concrete having the self-contraction quantity of 400 μm or less per 1 m in an age of 60 days is used. The PC concrete board is manufactured in a factory or on a site-fabrication yard, the concrete board is carried at a building place and installed at a place correspoding to the web of the box girder and the box girder is constructed by cast-in-placing the lower floor slab and the upper floor slab. COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2006298679A Ultra-high strength fiber-reinforced cement composition, ultra-high strength fiber-reinforced mortar or concrete, and ultra-high strength cement admixture 有权
标题翻译：超强度纤维增强水泥组合物，超强度纤维增强纤维或混凝土，超高强度水泥混合物
公开(公告)号：JP2006298679A
公开(公告)日：2006-11-02
申请号：JP2005120127
申请日：2005-04-18
申请人： Denki Kagaku Kogyo Kk , Kajima Corp , 電気化学工業株式会社 , 鹿島建設株式会社
发明人： WATANABE YOSHIHARU , ASHIDA KIMINOBU , AIZAWA KAZUHIRO , TAKADA KAZUNORI , HISHIKI TAKEYOSHI , ONO TOSHIO , ICHINOMIYA TOSHIMICHI , SAKAI GORO , MATSUBARA KOMEI
IPC分类号： C04B28/02 , C04B14/48 , C04B18/08 , C04B18/14 , C04B22/14 , C04B111/20
CPC分类号： C04B28/02 , C04B2201/52 , Y02W30/92 , Y02W30/94 , C04B14/48 , C04B18/08 , C04B18/146 , C04B22/143 , C04B18/065
摘要： PROBLEM TO BE SOLVED: To provide ultra-high strength fiber-reinforced mortar or concrete which has improved flowability (workability) and exhibits high bending strength even when a smaller amount of metal fiber is used and in which fine aggregate used in general ready-mixed concrete can be used. SOLUTION: An ultra-high strength fiber-reinforced cement composition contains cement, silica fume, coal gasification fly ash, gypsum, and the metal fiber and is characterized in that the mass ratios of the silica fume and the coal gasification fly ash are 95-50 and 5-50, respectively. The ultra-high strength fiber-reinforced mortar or concrete contains fine aggregate in the cement composition. The ultra-high strength cement admixture contains silica fume, coal gasification fly ash, and gypsum as main components and is characterized in that the mass ratios of the silica fume and the coal gasification fly ash are 95-50 and 5-50, respectively. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使使用较少量的金属纤维并且一般使用的细骨料，提供具有改善的流动性（可加工性）和显示高弯曲强度的超高强度纤维增强砂浆或混凝土可以使用预拌混凝土。解决方案：超高强度纤维增强水泥组合物含有水泥，硅灰，煤气化飞灰，石膏和金属纤维，其特征在于硅粉和煤气化飞灰的质量比分别为95-50和5-50。超高强度纤维增强砂浆或混凝土在水泥组合物中含有细骨料。超高强度水泥外加剂含有硅灰，煤气化粉煤灰和石膏作为主要成分，其特征是硅灰和煤气化飞灰的质量比分别为95-50和5-50。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JPH0893223A CONE 失效
公开(公告)号：JPH0893223A
公开(公告)日：1996-04-09
申请号：JP23518494
申请日：1994-09-29
申请人： KAJIMA CORP
发明人： TAKADA KAZUNORI , MOTOHASHI KENICHI , KUNICHIKA YASUHIKO , ABE KAZUYUKI
IPC分类号： E04G17/06
摘要： PURPOSE: To form an irregular part on a concrete surface after releasing it from a mold by forming the specified irregular part on an outer peripheral surface of a cone main body. CONSTITUTION: A main body 4a of a cone 4 installed on an end part of a separator 3 is formed in a truncated cone shaped megaphone type, a screw hole 5 is provided in the center on the side of a small diameter, and a screw 5a by a spiral groove is provided there. Additionally, a spiral projection 6 is integrally and projectively provided on an outer peripheral surface of the main body 4a, and its pitch is synchronized to that of the screw 5a. To remove the cone 4 from the separator 3 after releasing it from a mold, it can be removed by pulling it outward while turning it. At this time, the pitches of the spiral projection 6 and the screw 5a are formed the same, even when the spiral projection 6 is newly provided, it does not disturb removal of the cone 4 from the separator 3, and the cone 4 can be easily pulled out. When mortar is put in a hole from which the cone 4 is removed, the mortar does not fall as it is caught in the groove even the mortar is contracted.

5. 发明专利

JP2001019527A CONCRETE USING COAL GASIFICATION FLY ASH 失效
公开(公告)号：JP2001019527A
公开(公告)日：2001-01-23
申请号：JP19048099
申请日：1999-07-05
申请人： KAJIMA CORP
发明人： TAKADA KAZUNORI , MIZOBUCHI TOSHIAKI , SHINODA YOSHINOBU
IPC分类号： B09B3/00 , C04B18/04 , C04B18/08 , C04B28/02 , C04B111/00
摘要： PROBLEM TO BE SOLVED: To improve the workability and the mixing efficiency and reduce the cost without any adverse effect on its intrinsic fluidity and strength by substituting the powder that includes the cement to be formulated to a high- fluidity concrete having a specific value of slump flow with a specific capacity of coal gasification flyash(CGFA). SOLUTION: The powder including cement to be formulated to the high- fluidity concrete having the target slump flow value of >=50 cm is substituted with 2-20 capacity of CGFA per 100 capacity of the powder. The CGFA is exhausted as a by-product, when electric power is generated by using gasification coal, which is not yet produced in Japan. CGFA is effective in improvement of the workability of the concrete. Particularly, a small amount of CGFA is formulated to a low water/powder-ratio high-strength concrete or a high-fluidity concrete of a large powder volume to give the product of good workability through usual kneading operation.

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