The ceramic permeable brick is fired by using automatic molding technology and advanced kiln equipment. The product obtained the utility model patent certificate issued by the Intellectual Property Office of the People's Republic of China on November 22, 2001, and was in Beijing on January 11, 2002. After being judged by the experts organized by the Ministry of National Construction, and won the title of "National Key New Product", they have been praised by experts and recommended as aspiring pavement construction materials, which can be widely used in ecological parks, squares, sidewalks, Parking lots, residential areas, etc., build elegant and colorful urban phenomena, and then beautify people's daily living environment, which has the following characteristics:
The permeable brick paving process is very different from ordinary pavement bricks. In the pavement, special attention should be paid to maintaining its special water permeable characteristics. Matters needing attention for permeable bricks: In order to obtain better water permeability, the buffer layer is directly made of medium sand, which has good pressure buffering capacity; the lower layer uses open water-permeable subgrade and uses a narrow grade (the aggregate particle size is roughly in
7mm ～ 40mm), high ash ratio and low water-cement ratio concrete. Its main effects are:
① The compaction method can be used to obtain a concrete roadbed with a certain strength (28 d up to 20 MPa) in the pavement, which can reduce the phenomenon of road surface subsidence after storing a certain amount of water in the underground aquifer. (Notes during compaction: Need to level the compaction compaction, compaction coefficient must not be less than 95%);
② This special concrete has a large interconnected porosity, which can guide the rapid downward flow of water permeating through the permeable bricks, reduce the occurrence of pavement runoff due to long-term rain or heavy rainfall, and can meet the larger Water storage function;
③ In an air-dry environment, the moisture stored in this layer can be emitted to the air through the pavement through evaporation to achieve the effects of increasing air humidity, reducing ground temperature, and adjusting the surrounding environment.
The ability to achieve the best water permeability depends largely on the rationality of the paving process