What is reinforced concrete?

Reinforced concrete is a structural material consisting of concrete and reinforcement in the form of steel inserts. They can be bars, strings, cables, lines or nets, they can also be large cross-section rigid steel components (e.g. U-sections, I-sections, etc.)
Using steel components in concrete is meant to increase its tensile stress strength. Concrete alone, with no added steel, is perfectly able to deal with compression stresses, but its tensile strength is relatively low. The presence of steel eliminates this disadvantage partially. Besides, both materials have similar thermal expansion characteristics and they work together well, primarily due to the ribbed surface of the steel components.
Well-made and laid reinforced concrete is fireproof, resistant to static and dynamic loads, corrosion-proof and, after adding suitable mixtures, resistant to atmospheric conditions. Information about the class and grade of steel that will ultimately end up in the composite, similarly to information about the shape and type of reinforcement, should be included in the design documentation of the reinforced concrete structure. The formula and information about the class of concrete should also be included in the design.
Reinforced concrete was first used halfway through the 19th century, though it gained real popularity near the end of the nineteenth century. Since then has been is used as a construction material in most of the known structural components, engineering structures, buildings, forts and shelters or landscape architecture.

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