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Indented PC Wire for Concrete Structures

Indented PC wire, also called indented PC steel wire, PC indented wires and oval indented PC wire, is a kind of PC wire which surface is indented. The shape of the indented surface can be round, ellipse, rhombus, etc. At the same time, the indented surface can be classified into two-sides, three-sides, and four-sides. Compared with the plain PC wire, it can heavily combine the steel wire with concrete in order to transfer the desired compressive force from the steel wire to the concrete. What’s more, it can save steel materials and increases the quality of the concrete structures, thus decreasing the concrete construction expenses and make the steel wire a better performance. And according to customers' special requirement, we can supply indented PC steel wires of different diameters, tensile strengths, and national standards.

Three pieces of PC wire: the first one is 4-sided-oval indented, the second one is 3-sided deformed and the last one is plain.
The surface shape of indented PC wire can be classified into round, oval and deformed. And the shape can be 2-sided, 3-sided and 4-sided.
Many indented PC wires.
Compared with the plain PC wire, indented PC wire surface is indented which can strengthen boding force with concrete.

Specification

  • Material: high carbon steel.
  • Diameter: 3.00 mm - 9.00 mm.
  • Tensile strength: different grade from 1570 MPa - 1860 MPa.
  • Surface treatment: indented.
  • Standards: ASTM 881, BS 5896, TIS 95-2540, EN 10138-2, ISO 6934-2, SS 141757, JIS G 3536, NEN 3868, etc.
Indented PC wire of two sided indented and three sided indented
Appearance Nominal dia. (mm) Tensile strength (MPa) Relaxation (1000h) Standards
Two sided indent 4.0, 5.0, 6.0,7.0, 8.0, 9.0. 1570, 1670, 1770, 1860. Normal relaxation ≤ 2.5%
Low relaxation ≤ 2.5%
ASTM A881,
BS 5896/2,
TIS 95-2540,
EN 10138-2,
ISO 6934-2,
SS 141757,
JIS G 3536,
NEN 3868.
Three sided indent 4.0, 5.0, 5.03, 5.32, 6.0, 7.0, 8.0. 1570, 1670, 1770, 1860.

The specifications of three types of indented PC wire.

  1. PC Wire GOST 7348-81: has round or two-side die-rolled section.

    PC Wire GOST 7348-81 mechanical properties
    Sketch map of PC Wire GOST 7348-81 two-side die-rolled section, including spacing, diameter and range of nominal depths of indentation.
    A: spacing, mm B: diameter h: range of nominal depths of indentation
    Diameter (mm) Depths of indentation (mm) Spacing (mm) Tensile strength (N/mm2) Breaking load (kN) Relaxation (%)
    3.0 0.15 5.5 - 7.0 1780 12.6 2.5%
    4.0 0.19 1700 21.4
    5.0 0.24 1670 32.8
  2. PC wire EN 10138-2-2006: has round or three-sided die-rolled section.

    PC wire EN 10138-2-2006 mechanical properties
    Sketch map of PC wire EN 10138-2-2006 three-side die-rolled section
    Diameter (mm) Depths of indentation (mm) Depth deviation tolerance (mm) Length (mm)
    I
    Spacing (mm)
    C
    Tensile strength (N/mm2) Weight (g/m) Breaking load (kN)
    5.0 0.06 - 0.13 ± 0.03 3.5 ± 0.5 5.5 ± 0.5 1770 153.1 34.7
    6.0 0.09 - 0.16 ± 0.04 5.0 ± 0.5 8.0 ± 0.5 1670 221.0 47.3
    7.0 300.7 64.3
  3. PC Wire BS 5896-1980: with rhombic indented has round or three-sided die-rolled section.

    PC wire BS 5896-1980 mechanical properties
    Sketch map of PC Wire BS 5896-1980 and its surface indented is rhombic.
    Diameter (mm) Diameter Tolerance (mm) Depth of indentation (mm) Tensile strength (N/mm2) Weight (g/m) Breaking load (kN)
    5.0 ± 0.05 0.12 ± 0.15 1770 154 34.7
    6.0 0.15 ± 0.05 1670 222 47.3
    7.0 302 64.3

Feature

  • Improve bonding strength between indented PC wire and concrete.
  • Decrease frictional losses between indented PC wire and concrete.
  • Maintain higher effective compressive force in the structure.
  • Improve anchorage efficiency.
  • Reduce operation process at the customer end.

Application

  • Prestressed concrete constructions or sleepers.
  • Prefabricated units.
  • Hollow slabs.
  • Large roof slabs.
  • Trapezoidal boards.
  • Channeled plates.
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