Reinforced concrete refers to reinforced concrete; Prestressed reinforced concrete is a kind of reinforced concrete. Because the tensile capacity of concrete itself is very weak, prestress is applied to concrete through the pre-tensile stress of steel bars to overcome the problem of weak tensile capacity of concrete, reduce cracks caused by tensile stress of concrete and improve the overall performance of reinforced concrete. Prestressed reinforced concrete can be used in all places where reinforced concrete is used. Because the construction procedure of prestressed reinforced concrete is more complicated than ordinary reinforced concrete and requires some equipment, prestressed reinforced concrete is widely used in bridges, large frame beams and other structures, as well as some floors with strict requirements. Prestressed reinforced concrete can reduce the cross section, reduce concrete micro cracks, make the structural size smaller and the structural cost more economical.
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