Reinforced concrete working principle

Reinforced concrete reason why you can work together by its own material nature of the decision. First, steel and concrete has approximately the same coefficient of linear expansion is not generated by the different environments excessive stress. Secondly, there is good adhesion between the steel and concrete, the surface may also be processed into steel bars spaced ribs (called deformed bars) to improve the mechanical interlocking between the concrete and steel, as this is still not enough to deliver steel and when the tension between the concrete, usually ends of bent steel hooks 180 degrees. Further concrete calcium hydroxide to provide an alkaline environment in the steel surface to form a layer of passivation film, make steel with respect to the neutral and acidic environment is more likely to corrode.