The reasons why reinforced and concrete can work together
Release time:
2023-11-15
The surface of the cement slurry on the surface of the reinforced and the growth of the cement crystal; the resistance power is due to the compression of the steel bars during concrete; the mechanical bite force effect.
The reasons why reinforced and concrete can work together are the main points:
Good bonding force: There is a good adhesion between the steel bars and the concrete, which enables the two to be reliably combined into a whole, which can be deformed together under
the
action of loads to complete its structural function. This adhesion is mainly composed of chemical tunnels, motor resistance and mechanical bite force. Chemical tunnel is due to the penetration
of
The surface of the cement slurry on the surface of the reinforced and the growth of the cement crystal; the resistance power is due to the compression of the steel bars during concrete; the
mechanical bite force effect.
Similar temperature line expansion coefficients: The temperature line expansion coefficient of steel bars and concrete is closer, which avoids a large temperature stress during temperature
changes, thereby protecting the bonding force between the two. Specifically, the temperature line expansion coefficient of reinforcement is 1.2 × 10⁻⁵, while the expansion coefficient of the
concrete is between 0.82 × 10⁻⁵ and 1.1 × 10.
Protecting the reinforced steel is free of rust: The concrete wraps in the periphery of the steel bars, which plays a protective role to prevent the rust of steel bars, thereby ensuring the common
work of the reinforced and concrete. This protection effect not only extends the life of the structure, but also improves the durability of the structure.
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