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    • 14. 发明专利
    • Method for manufacturing concrete structure, and concrete curing sheet
    • 制造混凝土结构的方法和混凝土固化片
    • JP2014185506A
    • 2014-10-02
    • JP2013092281
    • 2013-04-25
    • Kajima Corp鹿島建設株式会社
    • SAKATA NOBORUWATANABE KENZONUKUSHINA TATSUYAYANAI SHUJISAKAI GOROYOKOZEKI KOSUKEKONDO KEIJI
    • E04G21/02E04G9/10
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a concrete structure, capable of manufacturing a concrete structure of prescribed quality by effectively utilizing water.SOLUTION: A method for manufacturing a concrete structure includes: an installation step for installing a concrete form 30 for concrete placing; a placing step for placing concrete in a state that a curing sheet 10 is stuck on an inner face of the concrete form 30; and a concrete form removal step for removing the concrete form 30 after the concrete C is placed. A contact angle between a contact surface on the concrete side of the curing sheet 10 used for the placing step and water is equal to or more than 50 degrees, thereby suppressing the generation of bleeding water.
    • 要解决的问题:提供一种混凝土结构的制造方法,其能够通过有效利用水来制造具有规定质量的混凝土结构。解决方案:一种制造混凝土结构的方法,包括:安装步骤,用于安装混凝土模板30,用于 混凝土配置 将固化片10固定在混凝土模30的内面的状态下配置混凝土的放置工序; 以及在混凝土C放置之后去除混凝土模板30的混凝土表面去除步骤。 用于放置步骤的固化片10的混凝土侧的接触表面与水之间的接触角等于或大于50度,从而抑制出水的产生。
    • 15. 发明专利
    • Construction method for concrete placing joint
    • 混凝土浇注接头的施工方法
    • JP2014025262A
    • 2014-02-06
    • JP2012166201
    • 2012-07-26
    • Kajima Corp鹿島建設株式会社
    • KOBAYASHI KIYOSHISAKATA NOBORUYOKOZEKI KOSUKESAKAMOTO HARUMISANO SHINOBUNAKATANI YUKIHIROKUJIRAI YOSHIAKI
    • E04G21/02
    • PROBLEM TO BE SOLVED: To provide a construction method for a concrete placing joint capable of adequately controlling a crack on newly placed concrete.SOLUTION: A construction method for a concrete placing joint to place new concrete 19 on an existing concrete structure 11 comprises: a formwork installation process to install a formwork 15 for placing the new concrete 19 on an upper face 11a of the existing concrete structure 11; a hardening retarded layer installation process to construct a hardening retarded layer 17 which hardens later than the new concrete 19 at a bottom section inside the formwork 15 on the upper face 11a of the existing concrete structure 11; and a new concrete placing process to place the new concrete 19 on the hardening retarded layer 15 inside the formwork 15. In the hardening retarded layer installation process, super retarded concrete with mushy consistency or super retarded mortar with mushy consistency is placed at the bottom section inside the formwork.
    • 要解决的问题:提供一种能够充分控制新配混凝土的裂缝的混凝土浇筑接头的施工方法。解决方案:一种用于将新混凝土19置于现有混凝土结构11上的混凝土浇筑接头的施工方法包括: 模板安装过程,以安装用于将新混凝土19放置在现有混凝土结构11的上表面11a上的模板15; 硬化延迟层安装方法,用于构造比现有混凝土结构11的上表面11a上的模板15内部的底部部分处的新混凝土19更硬的硬化延迟层17; 以及将新混凝土19置于模板15内的硬化延迟层15上的新的混凝土浇筑工艺。在硬化延迟层安装过程中,将具有糊状稠度的超延迟混凝土或具有糊状稠度的超延迟砂浆放置在底部 在模板内。
    • 18. 发明专利
    • Curing method of lining concrete, center truck, and curing system
    • 混凝土,中心卡车和固化系统的固化方法
    • JP2012172353A
    • 2012-09-10
    • JP2011034133
    • 2011-02-21
    • Kajima Corp鹿島建設株式会社
    • FUJIMOTO KAZUYOSHIFUKUDA KATSUMISATO KIMIHIKOYOKOZEKI KOSUKEASHIZAWA RYOICHISASAKI TOSHIYUKIKOBAYASHI SEISAKATA NOBORU
    • E21D11/10
    • PROBLEM TO BE SOLVED: To provide a curing method of lining concrete, capable of reducing construction period and preventing generation of cracks.SOLUTION: A curing system 2 in use comprises: a center truck 11 having a front windbreaking sheet 21a and a rear windbreaking sheet 21b at the front and rear ends, respectively, of a center formwork 15; and a heat insulation curing truck 23 having a heat insulation sheet 29 at a rear end of a curing panel 27. The center formwork 15 is provided with a heat insulation layer. The surface of a lining concrete 7n is covered at least with the front windbreaking sheet 21a, the rear windbreaking sheet 21b, and the center formwork 15 during movement of the center truck 11 from a section n to a front section n+1b of a tunnel 3, and the surface of the lining concrete 7n is covered at least with the front windbreaking sheet 21a, the rear windbreaking sheet 21b, the insulation sheet 29, the center formwork 15, and the curing panel 27 during movement of the heat insulation curing truck 23 from a section n-1 to the front section n, so as to cure the lining concrete 7n, respectively.
    • 要解决的问题:提供一种能够减少施工周期并防止产生裂缝的混凝土的固化方法。 解决方案:使用的固化系统2包括:中心卡车11,其分别在中心模板15的前后分别具有前防滑片21a和后防滑片21b; 以及在固化面板27的后端具有隔热片29的绝热固化车23.中央模板15设置有绝热层。 在中心卡车11从隧道n的第n区到第n + 1b区的运动期间,衬里混凝土7n的表面至少与前面的断路片21a,后面的断路片21b和中心模板15一起被覆盖 3,在绝热固化车辆的运动期间,衬里混凝土7n的表面至少被覆盖有前面的防风片21a,后面的断路片21b,绝缘片29,中央模板15和固化板27 23从部分n-1到前部n,以分别固化衬里混凝土7n。 版权所有(C)2012,JPO&INPIT
    • 19. 发明专利
    • Method for placing concrete while dispersing crack caused by temperature stress
    • 用于在由温度应力引起的裂缝上放置混凝土的方法
    • JP2010065393A
    • 2010-03-25
    • JP2008230126
    • 2008-09-08
    • Kajima Corp鹿島建設株式会社
    • ASHIZAWA RYOICHIYOKOZEKI KOSUKEHAYASHI DAISUKESAKATA NOBORU
    • E04G21/02C04B16/06C04B28/02
    • PROBLEM TO BE SOLVED: To provide a new simple and effective method for bringing about the rendering harmless of a crack caused by temperature stress in concrete in hardening.
      SOLUTION: In the method for placing the concrete while dispersing the cracks caused by the temperature stress, after a form is installed in the placing construction of a concrete structure, a crack dispersion-type HPFRCC (High Performance Fiber Reinforced Cement Composite) presenting a tensile distortion of 1% or more at a material age of 28 days is sprayed to a thickness of 10-150 mm on the placing-side surface of the form; fresh concrete is placed to come into contact with the surface of the HPFRCC in hardening by the time when the compressive strength of the HPFRCC reaches half the strength at the material age of 28 days; and the HPFRCC and the concrete are integrated together. For example, the HPFRCC contains 1-3 vol.% of PVA staples with a fiber diameter of 0.05 mm or less and a fiber length of 5-20 mm.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种简单有效的方法,使混凝土中由温度应力引起的裂纹无害化,从而使其硬化。 解决方案:在分散由温度应力引起的裂缝的同时放置混凝土的方法中,在混凝土结构的放置结构中安装一种形式后,采用裂纹分散型HPFRCC(高性能纤维增强水泥复合材料) 在28天的材料年龄时呈现1%以上的拉伸变形,在该形式的放置侧表面上喷涂成10〜150mm的厚度; 新鲜混凝土在HPFRCC的抗压强度达到28天的强度的一半的时候被置于与HPFRCC的表面接触硬化; HPFRCC和混凝土整合在一起。 例如,HPFRCC含有1-3体积%的纤维直径为0.05mm以下且纤维长度为5-20mm的PVA短纤维。 版权所有(C)2010,JPO&INPIT
    • 20. 发明专利
    • Method for constructing concrete dam body
    • 构造混凝土体的方法
    • JP2010037797A
    • 2010-02-18
    • JP2008201418
    • 2008-08-05
    • Kajima Corp鹿島建設株式会社
    • SAKATA NOBORUHAYASHI DAISUKESAKAI GOROYOKOZEKI KOSUKETAKADA ETSUHISATAKIGUCHI NORIOTAKEI AKIRAMATSUMOTO SHINYA
    • E02B7/02C04B7/19C04B20/00C04B28/08
    • Y02P40/143
    • PROBLEM TO BE SOLVED: To provide a technology capable of achieving, all at once, the shortening of a construction period, a reduction in the cooling cost of heat hydration and a reduction in an environmental load, in the construction of a dam body such as a large-scale dam. SOLUTION: In a method for constructing a concrete dam body, an RCD (Roller Compacted Dam) construction method is applied using zero-slump concrete as a component material inside a dam body. In this case, setting the lift height of each layer in the RCD construction method at 1.2 m or more is effective. The zero-slump concrete has characteristics in which a compressive strength on a material age of 91 days is set to be in the range of 7-35 N/mm 2 , and in which the amount of fine powder of a blast furnace slag occupied in a bonding material is set to be in the range of 71-96 mass%, preferably, 85-96%, in a superhard kneading mix proportion of a 60-100% water cementitious material ratio, a 50-200 mm maximum dimension of coarse aggregate, a 100-170 kg/m 3 unit cementitious material content, a 600-800 kg/m 3 unit weight of fine aggregate and a 1,400-1,700 kg/m 3 weight of coarse aggregate per unit volume. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种技术,能够立即实现施工期间的缩短,水合冷却成本的降低和环境负荷的降低,在坝的施工中 身体如大型水坝。 解决方案:在一种混凝土坝体构造方法中,使用坍落度塌陷混凝土作为坝体内的组分材料,应用了RCD(压路机压实水坝)施工方法。 在这种情况下,将RCD施工方法中的各层的升降高度设定为1.2m以上是有效的。 零坍落度混凝土具有将材料年龄91天的抗压强度设定在7-35N / mm 2 的范围内的特性,其中细粉末的量 在粘结材料中占据的高炉矿渣的60〜100%水泥质比超硬混炼比例为50〜100质量%,优选为85〜96% 粗骨料的最大尺寸为-200mm,单位胶结物质含量为100-170kg / m 3,单体重量为600-800kg / m 3, 每单位体积的粗骨料的重量为1400-1,700kg / m 3。 版权所有(C)2010,JPO&INPIT