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    • 3. 发明专利
    • Method of producing ready mixed concrete
    • 生产熟配混合料的方法
    • JP2014091243A
    • 2014-05-19
    • JP2012242177
    • 2012-11-01
    • Kajima Corp鹿島建設株式会社Milcon:Kk株式会社ミルコン
    • HASHIMOTO MANABUSAKATA NOBORUHAYASHI DAISUKESAKAI GOROAOYAMA HIROAKI
    • B28C7/04
    • PROBLEM TO BE SOLVED: To provide a method of producing ready mixed concrete containing liquid bubble material which causes less reduction of the amount of air even after carriage from a concrete factory to a pouring site.SOLUTION: A method of producing ready mixed concrete includes preparing a mixture by mixing at least cement, aggregate and water together, gas/liquid-mixing a bubbling agent solution containing at least an air entrainment agent and a capsule base agent with compressed air to form a liquid bubble material and mixing the mixture with the liquid bubble material to obtain ready mixed concrete containing the liquid bubble material. The step of forming the liquid bubble material includes adjusting the content of the air entrainment agent and/or the capsule base material in the bubbling agent solution according to one or more conditions selected from the time of carriage to the pouring site for the ready mixed concrete, carrying means for carrying the ready mixed concrete to the pouring site and the kneading temperature for the ready mixed concrete.
    • 要解决的问题:提供一种制备含有液泡材料的预混合混凝土的方法,即使在从混凝土工厂运输到浇注位置之后,空气的量也减少。解决方案:一种制备预拌混凝土的方法包括制备 混合物,至少将水泥,骨料和水混合在一起,将至少含有空气夹带剂的气泡溶液与胶囊基剂混合在一起,形成液泡材料,并将该混合物与液体混合 泡沫材料获得准备好的含有液泡材料的混合混凝土。 形成液泡材料的步骤包括根据一种或多种条件调节鼓泡剂溶液中的空气夹带剂和/或胶囊基材的含量,该条件选自从运输时到混合混凝土的浇注部位 用于将准备好的混凝土输送到浇注部位的承载装置和用于预混混凝土的混炼温度。
    • 7. 发明专利
    • Method and device for estimating property of concrete
    • 用于估算混凝土性能的方法和装置
    • JP2013174619A
    • 2013-09-05
    • JP2013112028
    • 2013-05-28
    • Kajima Corp鹿島建設株式会社
    • NAGOYA KAORUSAKATA NOBORUASHIZAWA RYOICHISAKAI GOROYOKOZEKI KOSUKEOTSUKA SHUNJISHIGENAGA AKIHIROKONDO KEIJI
    • G01N33/38
    • PROBLEM TO BE SOLVED: To provide an estimation method for continuously estimating fresh property with sufficient accuracy in normal concrete.SOLUTION: The estimation method of concrete property includes a property estimation step of inputting fresh concrete C to a hopper 13 of a concrete pump 1, and estimating the fresh property of the fresh concrete C on the basis of an agitation load relating to the rotation of an agitation wing 15 which agitates the fresh concrete C. The property estimation step includes estimating fresh property by comparing the agitation load with the preliminarily specified proper range of the agitation load. In the property estimation step, only the data acquired when the agitation wing 15 is completely buried under the liquid level of the fresh concrete C are adopted as the agitation load to be compared with the proper range.
    • 要解决的问题:提供一种用于在正常混凝土中以足够的精度连续估计新鲜性质的估计方法。解决方案:混凝土性能的估计方法包括将新鲜混凝土C输入到混凝土泵1的料斗13的性能估计步骤, 并根据与搅拌翼15的旋转相关的搅拌载荷来估算新拌混凝土C.该特性估计步骤包括通过将搅拌载荷与预先规定的搅拌载荷进行比较来估算新鲜性 适当的搅拌载荷范围。 在属性估计步骤中,仅将搅拌翼15完全埋在新鲜混凝土C的液面下时获取的数据作为搅拌载荷,与适当的范围进行比较。
    • 8. 发明专利
    • Cooling method of concrete structure
    • 混凝土结构冷却方法
    • JP2013159905A
    • 2013-08-19
    • JP2012020115
    • 2012-02-01
    • Kajima Corp鹿島建設株式会社
    • NUKUSHINA TATSUYAWATANABE KENZOYANAI SHUJIKUMABE ATSUSHIWATANABE ARIHISASAKATA NOBORUSAITO KIMIOSAKAI DAISUKE
    • E01D19/02E01D21/00E04G21/02
    • PROBLEM TO BE SOLVED: To provide a cooling method for constructing a concrete structure having a fixed height.SOLUTION: In a first installation step for a first lift, a first positioning pipe 13 is arranged at a position apart from the opening 12a of a first cooling pipe 12 in the cross direction. In a second installation step for a second lift, the first positioning pipe 13 is connected to the lower end of a second cooling pipe 22. The first cooling pipe 12 and the second cooling pipe 22 are thus independently arranged, each having a short length. The first cooling pipe 12 is filled with cement material to be supplied into a second form 21 through the top face of the cured cement material of the first lift. The first cooling pipe 12 is thus filled with cement material which is not directly fallen to the lower end of the first cooling pipe 12.
    • 要解决的问题:提供一种用于构造具有固定高度的混凝土结构的冷却方法。解决方案:在第一提升的第一安装步骤中,第一定位管13布置在离开第一 冷却管12在横向上。 在第二提升的第二安装步骤中,第一定位管13连接到第二冷却管22的下端。因此,第一冷却管12和第二冷却管22独立地布置,每个具有短的长度。 第一冷却管12填充有水泥材料,以通过第一升降机的固化的水泥材料的顶面供应到第二形式21。 因此,第一冷却管12填充有不直接落入第一冷却管12的下端的水泥材料。
    • 9. 发明专利
    • Construction method of concrete dam body
    • 混凝土结构的构造方法
    • JP2011168978A
    • 2011-09-01
    • JP2010031591
    • 2010-02-16
    • Kajima Corp鹿島建設株式会社
    • SAKATA NOBORUHAYASHI DAISUKESAKAI GOROYOKOZEKI KOSUKEASHIZAWA RYOICHIHASHIMOTO MANABUUCHIDA YUJI
    • E02B7/02C04B7/19C04B28/08
    • Y02P40/143
    • PROBLEM TO BE SOLVED: To provide a technique capable of simultaneously attaining, in construction of a dam body including a large-scale dam, reduction of work period, reduction in hydration cooling cost, and reduction in environmental load. SOLUTION: In the construction method of a concrete dam body, zero slump concrete is used as an internal constituting material of the dam body, and RCD construction method is applied. The zero slump concrete has a super hard mixed concrete composition having a water binder ratio of 60-100%, a rough aggregate maximum dimension of 50-200 mm, a unit binder amount of 100-170 kg/m 3 , a unit fine aggregate amount of 600-800 kg/m 3 , and a unit rough aggregate amount of 1400-1700 kg/m 3 , in which blast-furnace slag fine powder with alite content of 1.0 mass% or more is used in an amount of more than 96 to 100 mass% relative to the overall binder, and the zero slump concrete has a property such that the compression strength at a material age of 28 days is 8-30 N/mm 2 . In this case, it is effective to set the lift height per layer in the RCD method to 1.0 m or more. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种能够同时实现包括大型水坝的坝体的构造,工作时间的减少,水合冷却成本的降低以及环境负荷的降低的技术。 解决方案:在混凝土坝体的施工方法中,采用零坍落度混凝土作为坝体的内部构成材料,并应用了刚体结构的施工方法。 零坍落度混凝土具有水泥粘合剂比例为60-100%,粗骨料最大尺寸为50-200mm,单位粘合剂量为100-170kg / m 3的超硬混合混凝土组合物, SP>,单位细集料量为600-800kg / m 3 / SP>,单位粗骨料量为1400-1700kg / m 3 / SP>,其中, 相对于整体粘合剂,铝含量为1.0质量%以上的炉渣细粉以大于96〜100质量%的量使用,零坍落度混凝土具有使材料年龄的压缩强度 28天是8-30 N / mm 2 。 在这种情况下,将RCD方法中的每层的升程高度设定为1.0m以上是有效的。 版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • Kneaded material for cement composite material excellent in shear break resistance, composite material, and bridge beam member
    • 水泥复合材料的切割材料在抗剪切,复合材料和桥梁构件中表现优异
    • JP2011121832A
    • 2011-06-23
    • JP2009282250
    • 2009-12-11
    • Kajima Corp鹿島建設株式会社
    • KANDA TETSUSHISAKATA NOBORUHAYASHI DAISUKEUCHIDA YUJIBENNY SURYANTONAGAI KOHEIMAEKAWA KOICHI
    • C04B28/02C04B16/06E01D1/00
    • C04B28/02C04B14/02C04B14/06C04B16/0641C04B40/0028C04B40/0286
    • PROBLEM TO BE SOLVED: To provide a cement reinforced with short fibers, which is improved in shear break resistance while taking advantage of excellent deformation ability of ECC.
      SOLUTION: A cement composition X containing 1.0-3.0 vol.% of PVA short fibers having a fiber diameter of 30-50 μm, and a fiber length of 5-20 mm, and having properties described in the following [A] wherein the water-cement ratio is not less than 30% and the sand-cement ratio is 0-100% is mixed with a coarse aggregate Y to make a kneaded material having a content of the coarse aggregate Y of 5-15 vol.% in the whole kneaded material. The kneaded material is placed as a cement composite material. [A] A hardened body of a kneaded material obtained by kneading the cement composition X (not containing the coarse aggregate Y) to disperse the PVA short fibers randomly in the three-dimensional direction behaves to show not less than 1% of a tensile strain in the tensile test, the hardened body having a material age of 28 days by standard under water curing.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用短纤维增强的水泥,其利用ECC的优异变形能力,提高抗剪切性能。 解决方案:含有1.0-3.0体积%的纤维直径为30-50μm,纤维长度为5-20mm的PVA短纤维的水泥组合物X,具有以下[A]所述的性质, 其中水灰比为30%以上,砂 - 水泥比为0〜100%与粗骨料Y混合,制成粗骨料Y的含量为5〜15体积%的混炼物, 在整个捏合材料中。 将捏合的材料作为水泥复合材料放置。 [A]通过将水泥组合物X(不含粗骨料Y)捏合而使PVA短纤维在三维方向上随机分散得到的捏合材料的硬化体积为不小于拉伸应变的1% 在拉伸试验中,硬化体在水固化下具有标准的材料年龄28天。 版权所有(C)2011,JPO&INPIT