bridge using pc strand

Low relaxation pc strand

ISO 9001:2008, ISO14001:2004 Qualified ;
Low relaxation PC strand application for large-span bridges on railways and highway,rock-soil anchoring project,
multi-story industrial buildings,stadiums,coal mines,domes for nuclear power stations and etc.
Manufacturer comply to standard ASTM A416, BS5896, AS1311, JISG3536, ISO6934, EN10138

Low Relaxation PC Strand

unbonded pc strand spec and performance

Lubricating properties, reducing the frictional resistance, anti-corrosion grease for the production of unbonded should have good chemical stability, high temperature within the specified temperature range not flowing, erosion of the surrounding material, water blocking moisture corrosion resistance, low temperature does not become brittle. Grease production plant to provide quality documents and issue a product test reports. The performance of anti-corrosion grease should comply with the provisions of the JG3007-1993 Table 1.
Make sheath material bonded prestressed strand extruded high-density polyethylene resin, its quality is in line with the provisions of GB11116, raw material suppliers to provide quality performance test report documents and using the product. Extrusion molding can not be mixed with other filler affecting the performance of the sheath. Sheath color should be black, other colors can be used when the demand side, plus fill the masterbatch material can not reduce the performance of the sheath.
 The specifications and performance of the unbonded

1 of unbonded prestressed steel strand specifications and performance strand nominal diameter (mm) Nominal cross-sectional area (mm) 2 anti-corrosion grease quality nominal amount of strength (Mpa) 1720 W3 (g / m) is not less than the sheath Thickness (mm) of not less than μ κ 9.50 54.80 1860 1960 1720 32 0.8 0.04 ~ 0.10 0.003 ~ 0.004 12.70 98.70 1860 1960 1720 43 1.0 0.04 ~ 0.10 0.003 ~ 0.004 15.20 140.00 1860 1960 1720 50 1.0 0.04 ~ 0.10 0.003 ~ 0.004 15.70 150.00 1860 196 053 1.0 0.04 0.10 0.003 0.004 Note: The supply of both parties, but also production and supply strength and diameter unbonded prestressing strand.

 Anti-corrosion grease along the strand length of continuous coating and adequacy full, per meter oil quality in line with the provisions of 5.2 in Table 1. 5.3.4 sheath thickness should be uniform, and in accordance with the provisions of 5.2 in Table 1. Sheath tensile strength, flexural yield strength and elongation at break shall comply with the provisions in Table 2. Table 2 jacket Tensile strength (MPa) not less than 30 bending yield strength (MPa) of not less than 10 Elongation at break (MPa) 600 5.3.6 disk unbonded prestressing strand shall be not less than with a continuous strand. Bonded prestressed strand should have good straight, its value should be consistent with the provisions of the GB/T5224-2003. 5.4 appearance requirements the unbonded prestressing strand sheath surface should be smooth, no cracks, no dents, no visible strand profile, porosity, obvious wrinkles and mechanical damage. The unbonded production requirements strand, anti-corrosion grease and high-density polyethylene material should be used to make unbonded prestressing tendons after passing inspection. The production of anti-corrosion coating of grease and jacket continuous sheath production extruder extrusion.

5.5 Quality documentation requirements the unbonded prestressing strand Supplier shall purchase the supplier to provide the product quality documents, which include: supplier name, strand production unit contract number, product labeling, quality, number, performance standards, anti-corrosion grease production units, resin grades, name, testing reports for the date of manufacture. Unbonded prestressing strand sheath minor injuries at outsourcing waterproof polyethylene tape can be used for repair.

PC Strand Application

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PC Wire and Strand Specialist

PC 2-wire strand,   PC 3-wire Strand,

PC 7-wire strand,   PC 19-wire Strand,

Unbonded PC Strand,   PC wire Manufacturer

Contact us

Add: daqiuzhuan industry area Jinghai,Tianjin 301605,China

TEL:0086-22-2955681 FAX:0086-22-2639851