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Epoxy Galvanized Tying Wire

Epoxy Galvanized Tying Wire

Small Size Rebar

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10105-2
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Small Size Rebar

Rebar, also known as reinforcement steel and reinforcing steel, is a steel bar or mesh of steel wires used in reinforced concrete and masonry structures to strengthen and hold the concrete in tension. To improve the quality of the bond with the concrete, the surface of rebar is often patterned.

Overview

Rebar is necessary to compensate for the fact that whilst concrete is strong in compression, it is relatively weak in tension. By casting rebar into concrete, it is able to carry tensile loads and so increase overall strength.

Working Properties

Rebar is commonly manufactured using mild or high yield steel of grade 250 or 250 N/mm2 characteristic tensile strength. The constituents of both of these grades are around 99% iron, along with manganese, carbon, sulphur and phosphorous. The quality and grade of steel is dependent on the proportion of carbon. Mild cold-worked steel contains around 0.25% carbon, whereas high yield hot-rolled steel contains around 0.40%.

Main Uses

  • Primary reinforcement: Used to provide resistance to support design loads.
  • Secondary reinforcement: Used for durability and aesthetic purposes by providing localised resistance to limit cracking and temperature-induced stresses.
  • Provide resistance to concentrated loads, spreading it through a wider area.
  • Assist other steel bars in accommodating their loads by holding them in the correct position.
  • External steel tie bars to constrain and reinforce masonry structures, sometimes as a means of building conservation.
  • Reinforced masonry: Some masonry blocks and bricks include voids to accommodate rebar to carry tensile loads. The rebar is secured in place using grout.
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