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Steel Rebar
Rebar (short for reinforcing bar), known when massed as reinforcing steel or reinforcement steel, is a steel bar used as a tension device in reinforced concrete and reinforced masonry structures to strengthen and aid the concrete under tension.
Concrete is strong under compression but has low tensile strength. Rebar significantly increases the tensile strength of the structure. Rebar’s surface features a continuous series of ribs, lugs or indentations to promote a better bond with the concrete and reduce the risk of slippage. The most common type of rebar is carbon steel, typically consisting of hot-rolled round bars with deformation patterns embossed into its surface. Rebar is available in grades and specifications that vary in yield strength, ultimate tensile strength, chemical composition, and percentage of elongation and metric bar sizes that are available are from 6 mm to 50 mm.
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The principal advantage of (and in many cases the necessity for) incorporating steel rebar in a building project is its provision of remarkable tensile strength. Without it, edifices could be susceptible to cracking or utter collapse due to the poor tensile strength un-reinforced concrete offers. Carbon steel boasts similar thermal expansion coefficients to concrete, meaning they both expand and contract at an equal rate, making steel rebar an ideal counterpart for concrete.
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