FF Rod (Technora® Rod)
AFRP Rod for concrete tendon/rebar/anchor
No Rust, Light Weight, Non-Electromagnetic
The FF Rod is an AFRP (Aramid Fiber-Reinforced Polymer) cable/rod, spirally-wound with Technora®, a para-aramid fiber manufactured by Teijin, Ltd., pultruded and impregnated with a vinyl ester resin. Technora is 8 times stronger than steel and 3 times stronger than fiberglass, polyester, or nylon yarns. Its stiff and highly oriented molecular structure leads to a high modulus of elasticity, low creep and low stress relaxation. It also has low thermal shrinkage, excellent dimensional stability. Thermal  decomposition thresholds of 500ºC, at 250ºC, Technora maintains more than half of its room-temperature tensile strength. It is highly resistant to acids, alkalis, and organic solvents. It is not vulnerable to damages caused by steam or sea water. Deformed surface lends itself to higher bonding strength with concrete. FF Rod has similar tensile strength as prestressing steel elements, however, FF Rod has better stress elongation characteristics (see Fig.1), it is much lighter (1/6th of steel), it would not rust or corrode, or it would not magnetize or create electronic disturbances. Ideal for prestressing of concrete, concrete structures in marine and other tough environment, electronic and communication related buildings, and others.
KEY FEATURES
- HIGH TENSILE STRENGTH
- HIGH DUCTILITY
- NO RUST/CORROSION
- ANTI ACID/ALKALIS
- NON-MAGNETIC/CONDUCTIVE
- LIGHT WEIGHT
SPECIFICATIONS
Nominal Strand Diameter (mm) |
7.4 |
13 |
Effective cross section area (mm²) |
42.4 |
133 |
Effective modulus (kN/ mm²) |
53 |
53 |
Design tensile strength (N/ mm²) |
1760 |
1350 |
Guaranteed capacity (kN/rod) |
81.4 |
205 |
Mass density (gram/meter) |
64 |
171 |
Type of anchorage |
Wedge |
Potted |
APPLICATIONS
PRODUCT INFORMATION
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