Title:
二重防錆PC鋼より線
Document Type and Number:
Japanese Patent JP5172028
Kind Code:
B1
Abstract:
Double rustproof PC strand comprising
a core wire (8) and six surrounding wires (9) twisted around said core wire (8), the wires having the following diameters:
(A) diameter of the core wire (8): 4.42 ± 0.05 mm, diameter of the surrounding wire (9): 4.25 ± 0.05 mm; or
(B) diameter of the core wire(8): 5.22 ± 0.05 mm, diameter of the surrounding wire (9): 5.06 ± 0.05 mm; or
(C) diameter of the core wire (8): 5.40 ± 0.05 mm, diameter of the surrounding wire (9): 5.25 ± 0.05 mm.
The tensile strength of the strand is 1850 N/mm 2 or higher. All wires were subjected to a wire drawing treatment and each wire comprises a plated layer (2). Additionally each plated wire or the strand is coated with a synthetic resin coating on an outer peripheral surface thereof. The PC strand has a uniform twisting pitch, durability and semi-permanent rustproof performance.
Inventors:
Ryohei Kurosawa
Kei Hirai
Kei Hirai
Application Number:
JP2012090872A
Publication Date:
March 27, 2013
Filing Date:
April 12, 2012
Export Citation:
Assignee:
Kurosawa Construction Co., Ltd.
International Classes:
C23C2/38; D07B1/06; D07B1/16; E04C5/08
Domestic Patent References:
| JPH1077587A | 1998-03-24 | |||
| JPH07252787A | 1995-10-03 | |||
| JPH05125566A | 1993-05-21 | |||
| JPH10226973A | 1998-08-25 | |||
| JP2003082438A | 2003-03-19 | |||
| JPH0821032A | 1996-01-23 | |||
| JPH116158A | 1999-01-12 | |||
| JP2004263320A | 2004-09-24 |
Attorney, Agent or Firm:
Patent Business Corporation Tokyo Alpa Patent Office