Prestressing Post Tensioning Construction Stressing 12.7mm 15.2mm PC Steel Strand Wire
Steel Grade:72B, 82B
Standard:AISI, ASTM, BS, DIN, GB, JIS, ASTM/BS/GB/JIS
Place of Origin:Tianjin, China
Type:Drawn Wire
Application:Construction
Alloy Or Not:Non-alloy
Special Use:Cold Heading Steel
Brand Name:Tian Rui
Product Name:PC Strand
Material:72B, 82B
Surface:Black
Certificate:ISO9001/SGS/BV
Packing:Coil Packing
Usage:Construction Materilals
Tensile strength:1470Mpa-1860Mpa
Technique:Cold drawn
Steel grade:Carbon steel
PE coated low relaxation PC strands are widely used in post tensioning prestressed concrete structure, like cable stay bride or PT slabs. It is characterized by having no need of room for future expansion and grout, convenient construction, material saving and easily bending etc.
We could offer international standards like ASTM A416, BS 5896, EN 10138 etc.
Coil weight is suitable for cutting around 1-3 tons, other coil weight available as well. Normally strand placed as eye-to-sky when loading. Each coils packed with steel strips and woven bag to protect the strand from damage.
Raw Material of Coating of Unbonded Strand is High Density Polyethylene(GB11116-89).
No melting or crack but still tenacious when temperature I s from -20 ℃ to +70 ℃;
Stable chemical performance;
No corrosion to surrounding material(like concrete steel and coating material);
No water permeating, no diluting, but good water proof performance;
Good anti-corrosion performance;
Good lubricating performance and low friction;
Special Grease for Unbonded Strand(JG3007-93)
No solidification at low temperature when it changes from -20 ℃ to +70 ℃;
Tenacious enough and good anti-damage performance;
No corrosion to surrounding material, such as concrete and steel;
Good water proof performance.
Unbonded prestressed steel strand specification and performance
|
PC Strand |
Weight of Oil not less than(g/m) |
Thickness of PE not less than (mm) |
Friction(μ) |
Coefficient of Effect on Friction(K) |
||
|
Nominal Diameter(mm) |
Area of Section(mm2) |
Tensile Strength Grade(Mpa) |
||||
|
12.7 |
98.7 |
1720 |
43 |
1.0 |
0.04-0.10 |
0.003-0.004 |
|
12.7 |
98.7 |
1860 |
43 |
1.0 |
0.04-0.10 |
0.003-0.004 |
|
12.7 |
98.7 |
1960 |
43 |
1.0 |
0.04-0.10 |
0.003-0.004 |
Relaxation Rate
|
Initial Stree |
Max.Relaxation after 1000 hours |
|
|
Normal relax. |
Low relax. |
|
|
70% of min.UTS |
8% |
2.5% |
|
80% of min.UTS |
12% |
3.5% |
TRS is also capable of producing epoxy-coated strand, galvanized PC strand, PE zinc-coated strand, indented PC strand, spiral-rip PC strand, for various applications.
