Material composition and working principle of concrete cushion block

Concrete cushion blocks can be used in many places, but if you want to use them correctly, you must have a certain understanding of the concrete cushion blocks. Only knowing the root and the bottom can you make the most of them.

Concrete cushion block is the abbreviation of reinforced concrete cushion block. Through this full name, I believe you have known the composition of this type of concrete cushion block.

The steel bar has very strong compressive and tensile properties, which means that the steel bar is not easy to break, but the material made of concrete has only high compressive strength, and is not strong in tensile and bending properties, but Concrete cushion block The effect will be greatly enhanced if steel bars are added to the interior of.

The concrete cushion block with reinforcement has obvious improvement in elasticity, as well as better chemical bonding force, mechanical biting force and pin bolt force, which not only shows their respective mechanical performance, but also works well in harmony to bear the external load borne by the structural members together.

In structural calculation, the concrete cushion block is used as a whole to bear external forces; Because the tensile strength of concrete is very low, in order to simplify the calculation, usually the concrete only considers bearing the compressive stress, while the tensile stress is all borne by the reinforcement.

Determination of maintenance layer thickness of reinforced concrete cushion block components

As for the section planning of stressed reinforced concrete members, the farther the tensile reinforcement is from the compression zone, the greater the external bending moment that the reinforcement per unit area can bear, so the higher the mechanical efficiency of the reinforcement.

Therefore, in general, the tensile reinforcement of concrete cushion block members should always be as close to the edge of concrete members on the tensile side as possible.