The main body of the concrete drainage board is a concrete slab formed by mixing cement, sand and stone in a certain proportion, followed by processes such as pouring, vibration and curing. It provides the basic strength and stability for the drainage board, enabling it to withstand certain pressure and load.

To achieve the drainage function, special drainage channels are set inside the concrete drainage board. There are two common forms. One is to reserve regular or irregular pores and holes in the concrete slab. These pores are interconnected to form a drainage network. The other is to embed permeable pipes or permeable fibers and other permeable materials in the concrete slab to serve as water flow channels to guide the water to drain smoothly.

Using the action of gravity, when water enters the concrete drainage board, the water naturally flows downward along the pores, holes or permeable pipes and other drainage channels in the drainage board under the drive of gravity, thus realizing the purpose of drainage. This is the main drainage method of the concrete drainage board and is applicable to most scenarios with drainage needs.

The tiny pores inside the concrete drainage board will produce capillary action. In some special cases, such as when the drainage board is in an environment with uneven humidity or when the water content is low, the capillary action can help the water distribute and transmit more evenly in the drainage board, assisting the gravity drainage and making the drainage process smoother and improving the drainage efficiency.

The concrete material itself has high compressive strength and flexural strength, enabling the concrete drainage board to bear large pressure and external forces. In places such as roads and squares that bear the load of vehicles and pedestrians, the concrete drainage board maintains good structural integrity.

It has excellent impermeability, frost resistance and corrosion resistance. When exposed to the natural environment for a long time, such as in humid, cold, acidic and alkaline corrosive media, it resists erosion, aging and damage, ensuring a long service life.

By reasonably designing the internal drainage channels, such as parameters of porosity, pore size and quantity, the concrete drainage board can effectively collect and discharge rainwater, groundwater, etc., avoiding waterlogging damage.

Its raw materials are mainly natural materials such as cement, sand and stone, which cause relatively little pollution. Moreover, the concrete material can be recycled after the end of its service life, promoting sustainable development.

In urban road construction, it can be laid between the road base and the surface layer to quickly drain road surface water. In urban squares and parks, it effectively drains surface water and keeps the ground dry.

In the basement floor of buildings, it can be laid above the waterproof layer to quickly drain accumulated water. In roof gardens and garage roofs, it plays a key role in drainage and protecting waterproof layers.

Used inside dam bodies or foundations to reduce pore water pressure, enhance stability, and prevent seepage and piping. In canals and pools, it ensures normal operation by draining excess water.