Introduction
→≥1000h 1000 hours Metallic materials Tensile stress Relaxation Test
→≥1000h 1000 hours Steel strand Relaxation Test
→≥1000h 1000 hours Steel wires and bars Relaxation Test
→SCR300kN/500kN/600kN/1000kN Steel strand Stress Corrosion Relaxation Testing Machine
→SCR300kN/500kN/600kN/1000kN Steel wires and bars Stress Corrosion Relaxation Testing Machine
Function:
→used in tensile stress relaxation test for standard strand, indented strand, compact strand, epoxy resin steel strand, PC Strand,unbonded steel strand or monostrand, galvanized, metallic materials, prestressed steel wires,etc.
→used in tensile stress relaxation test for messenger wire, guy wire, core wire or strength member, earth wire/ground wire, barrier cable,structure cable,etc.
→used in tensile stress relaxation test for steel bars for prestressed concrete,P(plain bar), HG(helical grooved bar), HR(helical ribbed bar), R(ribbed bar), etc.
Test Standards
→ISO 15630-3 Steel for the reinforcement and prestressing of concrete-Test methods--Part 3:Prestressing steel
→ISO6934-3 Steel for prestressing of concrete-Part3:Quenched and tempered wire
→ISO 6934-4 Steel for prestressing of concrete-Part4:strand
→ISO 14655 Epoxy-coated strand for the prestressing of concrete
→EN 10391 Metallic materials-Tensile stress relaxation-Part1:Test procedure
→ASTM E328-2013 Standard Test Methods for Stress Relaxation Tests for Materials and Structures
→ASTM A416/A416M-2012a Standard Specification for Steel Strand, Uncoated Seven-Wire for Prestressed Concrete
→ASTM A882/A882M-2004 Standard Specification for Filled Epoxy-Coated Seven-Wire Prestressing Steel Strand
→BS 5896-2012 High tensile steel wire and strand for the prestressing of concrete
Technical Specifications
300kN/500kN/600kN/1000kN Steel Strand/Steel Bars Stress Corrosion Relaxation Testing Machine |
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1 |
max. Load capacity |
300kN/500kN/600kN/1000kN |
2 |
measuring range of load |
1%-100%FS |
3 |
load accuracy |
≤±1% |
4 |
load resolution |
1/±300000F.S |
5 |
measuring range of deformation |
0.2%-100%FS |
6 |
deformation resolution |
0.001mm |
7 |
gauge length of deformation |
≥1800mm |
8 |
gauge length of steel strand |
≥60 times of nominal diameter of steel strand,≥200 times of nominal diameter of steel wire |
9 |
screw stroke |
0-200mm |
10 |
adjusting rate of screw |
0.001-50mm/min |
11 |
test space |
≥1800mm, ≥2100mm, ≥2500mm |
12 |
test program of stress relaxation |
Full digital closed-loop, uniform loading, hold |
13 |
nominal diameter of steel strand |
Φ9.53mm,Φ11.10mm,Φ12.70mm,Φ15.24mm,Φ17.80mm,Φ19.30mm,Φ20.30mm,Φ21.80mm,Φ28.60mm |
14 |
Test space of stress corrosion |
≥200mm |
15 |
Test container for stress corrosion |
Specially designed, corrosion resistant, leakage proof, volatile proof, long time test, accurate temperature control |
16 |
loading frame |
Horizontal four column, high stiffness, high stability,vibration-free impact,streamline |
17 |
Test temperature for stress corrosion |
Room temperature-100℃ |
18 |
voltage |
380V±10% 50Hz |