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    • 1. 发明专利
    • Shield tunnel construction method
    • 盾构隧道施工方法
    • JP2008081990A
    • 2008-04-10
    • JP2006261852
    • 2006-09-27
    • Dc Co LtdKajima Corp株式会社デイ・シイ鹿島建設株式会社
    • YANAI SHUJIARAI TAKAHIROSUDA NOBUHIROMATSUBARA KOMEITAKIMOTO KUNIHIKOYOSHIDA EISHINHIROSHIMA AKIOFUTADO NOBUKAZUTAKAHASHI SHOICHI
    • E21D11/04B28B23/08
    • PROBLEM TO BE SOLVED: To provide a technology for pouring a grout material applicable to a construction method for a shield tunnel of a middle bore class or a large bore class with bore exceeding, for example, 3 meters and capable of preventing the occurrence of a flow ahead phenomenon.
      SOLUTION: In this shield tunnel construction method for introducing prestress in the circumferential direction of the tunnel by inserting a PC steel material into a sheath after assembling concrete segments by one ring and fixing it tensely, a hydraulic grout having a flow of 60 mm or larger and smaller than 100 mm at a non-vibration time in a JASS flow test (ϕ50×h50 mm), having a property for making the measurement of a flow-down time impossible in a JP funnel test (being blocked), and having a compressive strength of 30 N/mm
      2 or larger as a material having an age of 7 days is used as the grout material when filling a cavity at the sheath with the grout material.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种用于浇注适用于具有超过例如3米的孔的中孔或大孔等级的盾构通道的施工方法的灌浆材料的技术,并且能够防止 发生流向现象。

      解决方案:在这种用于在隧道圆周方向上引入预应力的盾构隧道施工方法中,通过一个环组装混凝土段并将其紧固固定后,将PC钢材料插入护套中,将流量为60 在JASS流量试验(φ50×h50mm)中的非振动时间为10mm以上且小于100mm,具有在JP漏斗试验(阻止)中不能进行流通时间的测定的性质, 并且当使用灌浆材料在护套上填充空腔时,将具有年龄为7天的材料的抗压强度为30N / mm 2 / SP以上的材料用作灌浆材料。 版权所有(C)2008,JPO&INPIT

    • 5. 发明专利
    • Neutralization-preventive high-early-strength cement composition
    • 中和预防性高强度水泥组合物
    • JP2013047153A
    • 2013-03-07
    • JP2011185663
    • 2011-08-29
    • Dc Co Ltd株式会社デイ・シイ
    • FUTADO NOBUKAZUKOIBUCHI KIYOSHI
    • C04B7/345C04B14/28C04B18/08C04B18/14C04B22/06C04B22/14C04B28/00C04B111/22
    • C04B28/16C04B28/02Y02W30/94C04B7/02C04B14/28C04B18/141C04B2103/0088
    • PROBLEM TO BE SOLVED: To provide a neutralization-preventive high-early-strength cement composition which enables the efficient use of a previously developed highly reactive cement having a high C3S content and an extremely low C2S content, and is suitable as a cement for a concrete or a mortar which is used under a low-temperature environment such as a cold region or an environment in which neutralization is likely to progress.SOLUTION: The neutralization-preventive high-early-strength cement composition is characterized by comprising 60 to 97 wt.% of a highly reactive cement and 3 to 40 wt.% of an inorganic admixture, wherein the highly reactive cement is produced by adding 1.5 to 4.0 wt.% of gypsum in terms of SOcontent to a highly reactive cement clinker that has a mineral composition comprising more than 70% of CS and less than 5% of CS as calculated in accordance with a Bouge's equation, an L. S. D. value of more than 1 and a free lime content of 0.5 to 7.5 wt.%, and the inorganic admixture comprises at least one material selected from a blast furnace slag, an anhydrite, a limestone micropowder and a pozzolan substance.
    • 要解决的问题:提供一种中和预防性高强度水泥组合物,其能够有效地使用具有高C3S含量和极低C2S含量的先前开发的高反应性水泥,并且适合作为 用于混凝土或砂浆的水泥,其在诸如寒冷地区或中和可能进行的环境的低温环境下使用。 解决方案:中和防止高强度水泥组合物的特征在于包含60至97重量%的高反应性水泥和3至40重量%的无机混合物,其中产生高反应性水泥 通过向具有矿物质组成的高反应性水泥熟料中加入1.5至4.0重量%的石膏,其含量高于C 3 S且小于根据Bouge方程计算的C 2 S的5%,LSD值大于1, 石灰含量为0.5〜7.5重量%,无机混合物含有选自高炉矿渣,无水石膏,石灰石微粉和火山灰物质中的至少一种。 版权所有(C)2013,JPO&INPIT
    • 9. 发明专利
    • Thixotropic water-hardening bonding material
    • THIXOTROPIC水硬化粘合材料
    • JP2014062014A
    • 2014-04-10
    • JP2012208442
    • 2012-09-21
    • Dc Co Ltd株式会社デイ・シイ
    • NAGAHASHI SHUICHIFUTADO NOBUKAZUYATAGAI ATSUSHI
    • C04B28/02C04B7/02C04B24/16C04B24/38C04B103/40C04B103/44
    • PROBLEM TO BE SOLVED: To provide a thixotropic water-hardening bonding material which has thixotropy and has good adhesion to a contact inner wall surface during standstill while having low adhesion to the contact inner wall surface during flowing in order to solve the problems such as sags occur when using a water-hardening material including celluloses, pump pressure feeding property and rebound.SOLUTION: There is provided a thixotropic water-hardening bonding material which is composed of cement and 0.01 to 3.0 mass% of an alginate based on the cement or any one of an alginate and an alginate ester. The thixotropic water-hardening bonding material preferably contains 0.001 to 0.05 mass% of a foaming agent based on cement.
    • 要解决的问题:提供一种触变性水硬化接合材料,其在停止期间具有触变性并且对接触内壁表面具有良好的粘附性,同时在流动期间对接触内壁表面具有低粘附性以解决诸如下沉 发生在使用包含纤维素的水硬化材料,泵送压性能和回弹时。发现:提供了由水泥和0.01〜3.0质量%的基于水泥或任意的水泥藻酸盐组成的触变性水硬化接合材料 藻酸盐和藻酸盐之一。 触变性水硬化接合材料优选含有0.001〜0.05质量%的基于水泥的发泡剂。
    • 10. 发明专利
    • Blast furnace composition
    • 烤炉组成
    • JP2013047154A
    • 2013-03-07
    • JP2011185664
    • 2011-08-29
    • Dc Co Ltd株式会社デイ・シイ
    • FUTADO NOBUKAZUKOIBUCHI KIYOSHI
    • C04B28/08C04B7/153C04B14/28C04B18/08C04B18/14C04B22/14
    • Y02P40/143Y02W30/92Y02W30/94
    • PROBLEM TO BE SOLVED: To provide a blast furnace composition capable of efficiently using highly active cement, being friendly to an environment where cement content is relatively lower than 60%, having early period high strength developability even without using an admixture such as hardening promoter and special blast furnace even though cement content is relatively little, and being excellent in self-contraction suppressability.SOLUTION: The blast furnace composition is constituted by adding inorganic admixture comprising one or more kinds of anhydrous gypsum, lime stone fine powder, pozzolana material to the blast cement comprising high CS content and ultra low CS content and anhydrous gypsum, and is characterized in that the content of the highly active cement ia 10 to 60 wt.%, the content of the blast furnace slag is 10 to 89 wt.%, and the content of the inorganic admixture is 1 to 30 wt.%.
    • 要解决的问题:提供一种能够有效利用高活性水泥的高炉组合物,其对于水泥含量相对低于60%的环境是友好的,具有早期高强度显影性,即使不使用混合物 硬化促进剂和特种高炉,即使水泥含量相对较少,并且自收缩抑制性优异。 解决方案:高炉组合物是通过将包含一种或多种无水石膏,石灰石细粉末,火山灰材料的无机混合物添加到包含高C 3 S含量和超低C 2 S含量和无水石膏,其特征在于高活性水泥的含量为10〜60重量%,含量为 高炉渣为10〜89重量%,无机混合物的含量为1〜30重量%。 版权所有(C)2013,JPO&INPIT