Permeable bricks have good ventilation and water permeability functions, which are of great significance for urban construction. Currently, they are mainly used in parks, squares, sidewalks, parking lots, residential areas, etc. They can effectively improve road surface water problems, reduce heat island phenomena, and also play a certain role in reducing noise.
Permeable bricks originated in the Netherlands. In order to prevent the ground from sinking, the Dutch created a small pavement brick that was 100 millimeters long, 200 millimeters wide, 50 or 60 millimeters high, and laid on the street surface, leaving a gap of 2 millimeters between the bricks. This is Dutch brick, also the prototype of permeable brick.
Nowadays, there are various types of permeable bricks, and most of the commonly used permeable bricks on municipal roads are made from crushed stones as raw materials mixed with cement and adhesive additives. The compressive and flexural strength of the brick body is also very strong. The price of this type of brick is relatively cheaper than that of ceramic permeable bricks fired with ceramics, and it is suitable for most regional projects.
In recent years, China has been promoting the concept of sponge cities, and permeable roads that can mimic or even reshape natural hydrological conditions have received attention from people. The importance of permeable bricks has been repeatedly mentioned.
透水磚能讓地面積水直接從地表滲入。
Permeable bricks can allow water to seep directly into the ground surface.
However, in some places, although permeable bricks are laid on the surface of the road surface, the underlying roadbed still uses impermeable concrete, which means that the rainwater absorbed by permeable bricks cannot truly penetrate underground, and its function will be greatly reduced. To fully utilize the role of permeable bricks, a complete set of supporting rainwater accumulation treatment facilities is required. Permeable roads not only refer to the parts covered with permeable bricks on the surface, but also include corresponding water ecological infrastructure.
Powerful permeable road: The permeable system effectively controls the total amount, peak value, and pollution of runoff through functions such as rainwater infiltration, storage, regulation, transmission, and pollution interception and purification (the profile structure of the permeable road on the left during drainage, and the condition of ordinary road surface drainage on the right).
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