Permeable flooring has the following characteristics: First, high water permeability permeable floor has a 15% -25% porosity, permeability enables speeds of up to 31-52 l / m / h, much higher than the most effective rainfall The most outstanding drainage discharge rate configurations. Second, the high load capacity through the national testing agencies identified permeable bearing capacity of the floor can fully meet the standard C20-C25 carrying concrete, higher carrying capacity generally permeable brick. Third, a good decorative effect permeable floor have matching color optimization solution that can meet the unique and creative designers to achieve different environments and personality required style. It is generally difficult to achieve permeable brick. Fourth, ease of maintenance feared pore clogging is not necessary, so that the unique permeable pavement systems simply by way of high pressure water washing can be easily resolved. Five freeze-thaw resistance permeable pavement has more capacity than the freeze-thaw resistance of concrete pavement in general, the impact was not affected by the freeze fracture, because its structure itself has larger pores. Sixth, the durability of the floor durable wear permeability than asphalt, close to ordinary floor, to avoid the general presence of permeable brick useful life is short, no economic disadvantage. Seven high heat density material itself is low (15-25% voids) reduces the thermal storage capacity, unique pore structure makes the lower ground floor which reduces the temperature of the incoming entire pavement surface temperatures, these characteristics permeable paving system so close to natural vegetation cover the ground in heat and heat storage functions. Its widely used in municipal trail, garden paths, city squares, upscale residential district, parking, business office, outdoor sports (badminton venue, the basketball venue, etc.). Its scope of municipal trails, garden paths, city squares, upscale residential district, parking, business office, outdoor sports (badminton venue, the basketball venue, etc.). Construction process: construction steps: Mixing: permeable floor grout mix consistency was in large and small quantities, in order to ensure that they grout evenly wrapped in orthopedics, should adopt compulsory mixer, mixing time is 5 minutes or more. Casting: Before pouring, roadbed must be moistened with water. Otherwise, rapid loss of moisture permeable floor will weaken the bond strength between aggregate. Because permeable floor mix was relatively dry and hard, the good mixing and good permeable permeable flooring floor materials laid on the roadbed can pave the way. Vibrated: in the casting process should strongly vibrated or compacted. Pervious concrete is generally light with a plate vibrator after vibrator pave the mix, but must be careful not to use high-frequency vibration, otherwise he would be too dense concrete surface porosity is reduced, and the impact of flooding effects. While the high-frequency vibrators also make cement slurry from the surface of coarse aggregate segregation out into the bottom to form an impermeable layer, so that the material loses water permeability. Roll: After vibrators, should further use solid steel or light roller compaction level pervious concrete mix, taking into account the consistency of mixing materials and ambient temperature and other conditions, may require multiple roll, it should be noted that in It must be cleaned before roll roller, to prevent adhesive aggregate. Conservation: permeable floor due to the large number of holes, easy to dehydration, dry quickly, so conservation is very important especially in the early conservation, should be taken to avoid large quantities of moisture evaporation floor. Typically pervious concrete form removal time is shorter than normal concrete, so the sides and edges will be exposed to the air, the application of a plastic film or color of the cloth covering timely and side roads, in order to ensure adequate moisture and cement hydration. Permeable floor should be poured in one day after the start of sprinkler maintenance, should not use the pressure of water straight into the concrete surface watering, it will take away some of the grout, causing some of the weaker parts, but under normal circumstances directly from the Watering down. Permeable flooring water conservation time should be less than seven days.