1.Applycation of the PC strand
The production are mainly for the use of prestressed concrete reinforcement. Such as largespan bridges on railway and highway, overhead crane beam, rock-soil anchoring project, muti-storey industrial buildings, stadiums, coal mines and etc.
2.Introduction of the PC strand
A.GB/T5224 STANDRD
| Structure | Nomial Dia(mm) | Tolerance(mm) | Corss section area(mm ² ) | Re.mass per 1m(g/m) | Tensile Strength not less than (Rm/MPa) | Yield Strength not less than (Fp0.2/MPa) | ( Lo ≥ 500mm)Elongation at max load not less than(%) | Stress relaxation properties | |
| Intial load to % of nominal max load not more than(%) | The relaxation at 1000h(%) | ||||||||
| 1*2 | 8.00 |
+0.25
-0.10
|
25.1 | 197 |
1470
1570
1720
1860
1960
|
1320
1410
1550
1670
1760
|
3.5
|
60
70
80
|
1.0
2.5
4.5
|
| 10.00 | 39.3 | 309 | |||||||
| 12.00 | 56.5 | 444 | |||||||
| 1*3 | 8.60 |
+0.20
-0.10
|
37.3 | 296 | |||||
| 10.80 | 58.9 | 462 | |||||||
| 12.90 | 84.8 | 666 | |||||||
| 1*7 | 9.50 |
+0.30
-0.15
|
54.8 | 430 |
1720
1860
1960
|
1550
1670
1760
|
|||
| 11.10 | 74.2 | 582 | |||||||
| 12.70 |
+0.40
-0.20
|
98.7 | 775 | ||||||
| 15.20 | 140 | 1101 |
1470
1570
1670
1720
1860
1960
|
1320
1410
1500
1550
1670
1760
|
|||||
| 15.70 | 150 | 1178 |
1720
1860
|
1550
1670
|
|||||
| 17.80 | 191 | 1500 | |||||||
| 21.60 | 285 | 2237 | 1770 | 1590 | |||||
| 1860 | 1670 | ||||||||