A construction rod, commonly known as a rebar (short for reinforcing bar), is a steel bar or mesh of steel wires used as a tension device in reinforced concrete and masonry structures to strengthen and hold the concrete in compression.
Key Description & Features:
- Material: High-strength carbon steel (often with a deformed surface for better bonding with concrete).
- Shapes:
- Round bars (plain or deformed with ribs, lugs, or indentations).
- Available in coils (for smaller diameters) or straight lengths.
- Standard Diameters: 6 mm to 50 mm (commonly 8, 10, 12, 16, 20, 25, 32 mm).
- Grades:
- Fe415, Fe500, Fe550, Fe600 (numbers indicate yield strength in N/mm²).
- TMT (Thermo-Mechanically Treated) bars are most common due to high strength and ductility.
- Surface: Deformed (ribbed) for enhanced grip with concrete; plain rods used in specific applications.
- Length: Standard 12 meters (40 ft); custom lengths available.
- Corrosion Resistance:
- Epoxy-coated, galvanized, or stainless steel variants for marine/exposed structures.
Applications:
- Foundations, columns, beams, slabs.
- Bridges, dams, highways.
- Pre-stressed concrete elements.
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