公开(公告)号：US10323415B2

公开(公告)日：2019-06-18

申请号：US14891638

申请日：2014-12-18

Applicant: Sumitomo (SEI) Steel Wire Corp. ,  Sumitomo Electric Industries, Ltd.

Inventor： Katsuhito Oshima ,  Masato Yamada ,  Yoshiyuki Matsubara ,  Kiminori Matsushita ,  Shuichi Tanaka ,  Jun Sugawara ,  Shingo Nakajima

IPC: E04C5/08 ,  E04G21/12 ,  E04C5/10 ,  E04C5/01

Abstract: A pregrouted PC steel material (10) includes a 19-wire-twisted PC strand (1), a pregrouted layer (2) disposed on an outer periphery of the PC strand (1), and a sheath (3) configured to cover an outer periphery of the pregrouted layer (2). A filling resin (4) is filled between steel wires (side wires) (1b, 1c, 1d). Since the filling resin (4) does not exude to the pregrouted layer (2) before tensioning of the PC strand (10), an operation of tensioning the PC strand (1) is not hindered by curing of the pregrouted layer (2). In contrast, since the gap between the steel wires is reduced when the PC strand (1) is tensioned, the filling resin (4) flows out (exudes) from between the steel wires to the pregrouted layer (2) to cure the pregrouted layer (2) only after the reduction.

公开(公告)号：US20150159377A1

公开(公告)日：2015-06-11

申请号：US14418885

申请日：2013-07-05

Applicant: Sumitomo (SEI) Steel Wire Corp.1-1, Koyakita 1-cho ,  Sumitomo Electric Industries, Ltd.

Inventor： Takahide Saiki ,  Masato Yamada ,  Yoshihiko Touda ,  Takashi Ichiki ,  Kiminori Matsushita ,  Katsuhito Oshima ,  Jun Sugawara ,  Shingo Nakajima ,  Shuhei Maeda

IPC: E04C5/08

CPC classification number: E04C5/08 ,  E04C5/10 ,  E04G21/12 ,  Y10T428/31529 ,  Y10T428/31678

Abstract: Provided is a pregrouted PC steel material comprising a PC steel stranded wire composed of a plurality of steel wires, a pregrout layer disposed on the outer periphery of the PC steel stranded wire so as to accommodate the PC steel stranded wire, a sheath covering the outer periphery of the pregrout layer, and a capsule including a pregrout-hardening agent and a film with which the agent is covered, the capsule being interposed among the steel wires constituting the PC steel stranded wire. The capsule has a strength such that the capsule is not broken before tensioning the PC steel stranded wire but is broken by a tensile force during the tensioning. Also provided is a method for hardening the pregrout layer.

Abstract translation: 提供一种预浸渍的PC钢材料，其包括由多条钢丝组成的PC钢绞线，设置在PC钢绞线的外周上以便容纳PC钢绞线的预变色层，覆盖外层的护套 预成形层的周边，以及包含预变性剂的胶囊和被覆盖物的膜，胶囊插入构成PC钢绞线的钢丝中。 胶囊的强度使得胶囊在张紧PC钢绞线之前不会断裂，但在张紧期间被张力破坏。 还提供了用于硬化预变性层的方法。

公开(公告)号：US10357897B2

公开(公告)日：2019-07-23

申请号：US15554919

申请日：2016-02-05

Applicant: Sumitomo (SEI) Steel Wire Corp.

Inventor： Masato Yamada ,  Yoshiyuki Matsubara ,  Kiminori Matsushita ,  Shuichi Tanaka ,  Masashi Oikawa

IPC: B28C5/40 ,  C04B14/48 ,  B28B1/52 ,  E04C5/07 ,  B28C7/06 ,  C04B20/00 ,  E04C5/01

Abstract: To provide a concrete-reinforcing shaped body containing concrete-reinforcing fibers and having a plate-like shape. The concrete-reinforcing fibers each preferably have a diameter of 0.3 mm or smaller and a length of 5 mm or larger and 25 mm or smaller.

公开(公告)号：US10081943B2

公开(公告)日：2018-09-25

申请号：US14418885

申请日：2013-07-05

Applicant: Sumitomo (SEI) Steel Wire Corp. ,  Sumitomo Electric Industries, Ltd.

Inventor： Takahide Saiki ,  Masato Yamada ,  Yoshihiko Touda ,  Takashi Ichiki ,  Kiminori Matsushita ,  Katsuhito Oshima ,  Jun Sugawara ,  Shingo Nakajima ,  Shuhei Maeda

IPC: E04C5/08 ,  E04G21/12 ,  E04C5/10

CPC classification number: E04C5/08 ,  E04C5/10 ,  E04G21/12 ,  Y10T428/31529 ,  Y10T428/31678

Abstract: Provided is a pregrouted PC steel material comprising a PC steel stranded wire composed of a plurality of steel wires, a pregrout layer disposed on the outer periphery of the PC steel stranded wire so as to accommodate the PC steel stranded wire, a sheath covering the outer periphery of the pregrout layer, and a capsule including a pregrout-hardening agent and a film with which the agent is covered, the capsule being interposed among the steel wires constituting the PC steel stranded wire. The capsule has a strength such that the capsule is not broken before tensioning the PC steel stranded wire but is broken by a tensile force during the tensioning. Also provided is a method for hardening the pregrout layer.

公开(公告)号：US20180036910A1

公开(公告)日：2018-02-08

申请号：US15554919

申请日：2016-02-05

Applicant: Sumitomo (SEI) Steel Wire Corp.

Inventor： Masato Yamada ,  Yoshiyuki Matsubara ,  Kiminori Matsushita ,  Shuichi Tanaka ,  Masashi Oikawa

IPC: B28C5/40 ,  C04B14/48 ,  E04C5/07 ,  B28B1/52

CPC classification number: B28C5/402 ,  B28B1/523 ,  B28C7/06 ,  C04B14/48 ,  C04B20/00 ,  E04C5/012 ,  E04C5/073 ,  E04C5/076

Abstract: To provide a concrete-reinforcing shaped body containing concrete-reinforcing fibers and having a plate-like shape. The concrete-reinforcing fibers each preferably have a diameter of 0.3 mm smaller and a length of 5 mm or larger and 25 mm or smaller.