Threaded vs. Plain Rebar: Which is Stronger?

Reinforcing steel is one of the main materials in construction, especially for reinforcing reinforced concrete structures. There are two most commonly used types on the market: deformed rebar and plain rebar. Both have similar functions, but differ in their characteristics and strengths. So, which is stronger?

1. Deformed Rebar
Deformed rebar has a surface patterned with threads or fins around its shaft. This pattern is designed to provide better adhesion to concrete, preventing shifting or slipping when subjected to tensile loads.
Advantages:

• Stronger bond to concrete.
• Suitable for structures requiring extra strength, such as bridges, high-rise buildings, and toll roads.
• It has better resistance to tensile forces.

2. Plain Rebar
Plain rebar has a smooth, slippery surface without threads. Although its adhesion to concrete is lower than that of threaded rebar, this type is easier to shape and cut.
Advantages:

• Easy to bend to various shapes.
• Suitable for simple constructions such as houses or fences.
• It's usually more affordable.

3. Which is Stronger?
When it comes to tensile strength and bond strength to concrete, deformed rebar is clearly superior. However, this doesn't mean that plain rebar is useless—in fact, in some projects, its ease of shaping and cost-effectiveness make it more appropriate.

In conclusion:

• Use deformed rebar if the project requires extra strength and heavy loads.
• Use plain rebar for light construction or those requiring extensive shaping.

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