The paving process of environmentally-friendly permeable bricks is very different from ordinary pavement bricks. Due to the performance and characteristics of environmentally-friendly permeable bricks, the roadbed must be disposed very flat, and different materials are required to stop paving and disposing of different layers. There were more stringent requests. During the construction of environmentally-friendly permeable bricks, attention should be paid to the following aspects: In order to obtain a good permeable system and achieve better water permeability, the buffer layer is mostly made of medium sand, low mortar and low water-cement ratio cement mixed mortar, which has better The pressure-absorbing cushioning ability of the concrete is used; the lower layer adopts an open water-permeable subgrade, using narrow grades (aggregate particle size is about 7-40 mm), concrete with low cohesion ratio and low water-cement ratio.
Its main functions are as follows: First, it is possible to use compaction to obtain a concrete roadbed with a certain strength during the pavement, thereby reducing the phenomenon that the road surface sinks after the open aquifer stores a certain amount of water (requirement during compaction) Note: the need to level the compaction and compaction, the compaction coefficient is not less than 95%); the second is in a dry environment for a long time, the water stored in this layer can be lost to the air through the pavement through evaporation to reach Reduce air temperature, increase air humidity, and regulate the surrounding environment. Third, this special concrete has a relatively large connected porosity. After the end of the pavement, it can guide the soaked water to descend rapidly, reducing the appearance of pavement runoff due to long-term rain or heavy rainfall, while also meeting the Large water storage performance;