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Mild Steel Dowel Bars

Mild Steel Dowel Bars

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The COCUS 16mm Mild Steel Dowel Bars are essential components for high-quality concrete flatwork, providing critical load transfer across expansion and contraction joints. Designed to allow for the natural movement of concrete slabs while maintaining perfect vertical alignment, these dowel bars prevent "differential settlement" and joint failure in heavy-duty environments.

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Key Technical Features
Premium Grade S275 Steel: Manufactured from high-quality mild steel, providing the optimum balance of ductility and shear strength required for structural concrete joints.

Smooth Surface Finish: Features a precision-rolled smooth surface, essential for allowing the bar to slide within the second slab (when used with a debonding agent), facilitating thermal expansion and contraction.

Load Transfer Efficiency: Specifically designed to transfer shear loads across joints, preventing slab "stepping" and protecting the joint edges from spalling under heavy vehicle traffic.

Precision Cut Ends: All bars are cut with clean, square ends to prevent snagging within dowel sleeves and to ensure accurate positioning within the formwork.

Versatile Application: Ideal for use in floor slabs, hardstandings, road pavements, and any large-scale reinforced concrete project requiring movement joints.

Material Mild Steel (Smooth)
Diameter: 16mm
Available Lengths: 400mm / 600mm (Standard)
Steel Grade: S275 / BS 4449 Quality
Finish: Self-Colour / Plain
Compliance: Suitable for use in BS 8110 and Eurocode 2 designs

1. Why use 16mm bars instead of 12mm or 20mm?

A: 16mm is the industry "workhorse" size, providing excellent shear capacity for standard industrial floors (150mm–200mm thick) without the excessive weight and cost of larger bars.

2. Are these bars galvanised?

These are standard "self-colour" mild steel bars. If your project is in a highly corrosive environment (like a coastal area or chemical plant), please contact us regarding galvanised or stainless steel options.

3. Can I use these as standard reinforcement rebar?

A: While they are made of steel, these are smooth bars designed for movement joints. Standard reinforcement rebar is "ribbed" to bond with the concrete. Dowel bars are intentionally smooth to allow for sliding movement.

4. Do you supply the dowel sleeves to match?

Yes, we recommend using COCUS 16mm Plastic Dowel Sleeves for the most efficient installation, ensuring the "free end" of the bar has room to move as the concrete expands.

5. What is the benefit of using a smooth dowel bar versus a ribbed rebar in a joint?

Using a smooth bar is critical for the "sliding" mechanism of a movement joint. Ribbed rebar is designed to grip and bond permanently with the concrete; if used in a joint, it would lock the two slabs together. This prevents the concrete from naturally expanding and contracting, which inevitably leads to stress cracks and structural failure. The smooth surface of our 16mm dowel bar, especially when combined with a debonding agent, ensures the slabs can move independently while still transferring heavy loads vertically.

All our products are dispatched from the United Kingdom, with most items arriving within 3-5 working days. For custom-made or made-to-order items, delivery times may vary, and any exceptions will be clearly indicated during the checkout process.