LRPC (Low Relaxation Pre-stressed Concrete) strands are high-strength steel strands used in pre-stressed concrete structures to enhance their durability, load-bearing capacity, and overall performance. These strands undergo a special heat treatment to reduce relaxation losses over time, ensuring that they maintain their tension effectively.

Key Features of LRPC Strands

✅ High Tensile Strength – Typically available in grades like 1860 MPa or 2160 MPa.
✅ Low Relaxation Property – Retains initial pre-stress force with minimal losses over time.
✅ Multi-wire Configuration – Usually available as 7-wire or multi-wire strands.
✅ Surface Treatment Options – Plain, indented, or coated for improved bonding and corrosion resistance.
✅ Standard Diameters – Common sizes range from 9.5 mm to 15.7 mm (3/8" to 0.6").

Advantages of Using LRPC Strands

✔ Enhanced Structural Efficiency – Allows for longer spans and reduced material usage.
✔ Improved Durability – Resistant to creep and stress relaxation.
✔ Lower Maintenance Costs – Longer service life with minimal tension loss.
✔ Higher Load-bearing Capacity – Ideal for heavy-duty structures.

Applications of LRPC Strands

???? Bridges & Flyovers – Used in girders, deck slabs, and beams.
???? Buildings & High-Rises – Essential for pre-stressed concrete slabs and precast components.
???? Railway Sleepers – Ensures stability and durability.
???? Tunnels & Dams – Strengthens concrete segmental linings.
???? Wind Turbine Towers – Used in pre-stressed concrete towers for enhanced performance.