Permeable floor as a new environmentally friendly, eco-road material, increasing attention has been particularly concerned about the city's more modern surface is covered by impervious pavement housing construction and reinforced concrete industry, and natural soil phase than ordinary concrete pavement lack of breathing, heat and penetration ability to absorb rain, and brought a series of environmental problems, and concrete and therefore has been considered the destruction of the natural culprit, but as long as the continuous gap to be established, it can create convergence point and the natural environment. As the environmental load reduction in concrete, permeable floor to improve and restore the damage to the global environment is a creative material, so that human life can be in harmony with nature and sustainable development continues to prepare for flooding the floor before construction: 1 , pre-construction preparation: Three should be ready to prepare organizational, material, technical and other pre-construction. 1) tissue preparation: establish and improve construction project organization personnel settings to achieve the tasks required for the construction project in principle, staffing must be strictly controlled, to a special multi-purpose, one more post. 2) material preparation: Pervious concrete is applied substantially similar to concrete construction, raw materials, only less sand, and gravel certain size to replace the high aggregate material, with a certain amount of material (binder in the construction, high material). Material preparation should be prepared on-site personnel, such as accommodation, the required water and electricity supply, construction materials piled shed (Binder need to have shed waterproofing) structures; mixing machinery is set site so a series of preparatory work. Mechanical agitation settings venue stir pervious concrete is a small horizontal mixer. Blender is the best setup in the middle of the construction site, because pervious concrete are of concrete dry material in nature, its initial setting fast, in order to ensure the transport time as short as possible. To prevent dirt concrete construction site, the lower part of a range of mixers fender fortification measures required. 3) construction machinery, carts, bricklaying tools necessary tools, formwork with wood or steel and other equipment; water and electricity facilities in place, domestic water, electricity and construction of water, electricity. Construction of electricity: three-phase power, construction of water: ordinary tap connected to the next mixing equipment. 4) technical preparation before construction: to understand and analyze the characteristics of the project, schedule requirements, understand the construction of objective conditions, according to the design requirements, be familiar with the design drawings, construction layout reasonable force to develop a construction plan for the successful completion of the project is technically ready preparations. 5) with the team to do the civil side of the foundation, at the same time doing grassroots ground laying special permeable pipes, flooding pipeline laying outside in addition to the requirements of Figure child must be connected to the original road drainage system and become part of the road drainage system. Permeable flooring has the following characteristics: a 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 discharge rate of the best drainage configurations. Second, high carrying capacity identified by the national testing agencies, bearing capacity of the floor is completely permeable to reach the standard C20-C25 carrying concrete, higher carrying capacity generally permeable brick. Third, a good decorative effect permeable floor has matching color optimization solution that can meet the unique and creative designers to achieve the required different environments and personalized décor, it is generally difficult to achieve permeable brick. Fourth, ease of maintenance people are worried about the problem of pore blocking 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 a stronger ability than the average freeze-thaw resistance of concrete pavement, not affected by the freeze-thaw fracture surface, because it has a larger pore structure itself. Six, durability permeable flooring wear durable than asphalt, close to ordinary floor, to avoid the general presence of permeable brick useful life is short, not economic and other shortcomings. Seven, high heat density of the material itself is low (15-25% of voids) reduces the ability of the heat storage, the unique pore structure such that the lower the temperature of the incoming ground underground pavement surface to reduce the temperature of the whole, these characteristics permeable paving system so close to natural vegetation cover ground in absorbing and heat storage functions. Its widely used in municipal trail, garden paths, city squares, upscale residential district, parking, business office, outdoor sports (badminton stadium, basketball stadium, etc.). Its scope of municipal trails, garden paths, city squares, upscale residential district, parking, business office, outdoor sports (badminton stadium, basketball stadium, etc.). Construction process: Mixing: Mixture permeable floor grout consistency in large and small quantities, in order to ensure that they grout evenly wrapped in orthopedics, should adopt compulsory mixer, mixing time of 5 minutes or more . Pouring: Before pouring the roadbed must be moistened with water. Otherwise, rapid loss of moisture permeable floor will weaken the bond strength between the aggregate. Because permeable floor Mixture relatively dry and hard, the good mixing and good permeable permeable floor flooring materials can be laid on the roadbed, paving. Vibrators: in the casting process should not strongly vibrated or compacted. Pervious concrete is generally flat with a vibrator after light-up pave mix, but you must be careful not to use high-frequency vibrators, otherwise he would be too dense concrete surface to reduce the porosity and permeability affect results. While the high-frequency vibrators also make cement slurry is isolated from the surface of the coarse aggregate, into the bottom to form an impermeable layer, the material loses water permeability. Roll: After vibrators, should further using solid steel or light roller compaction level pervious concrete mix, taking into account the consistency of mixing materials and ambient temperature and other conditions, you may need multiple roll, but it should be noted that in must be cleaned before rolling the roller to prevent aggregate bond. 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. Pervious concrete removal time is usually 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 hydration of cement. Permeable floor should be poured in one day after the start of sprinkler maintenance, inappropriate use of water straight into the concrete surface pressure when 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 floor watering curing time should be less than 7 days