Color porous concrete permeable material [], Shanghai factory direct wholesale discount Hotline: 15221588551 Miss wish us! Application of pervious concrete began 100 years ago, according to VMMalhortra records: 1852 British construction due to lack of the fines, the development of concrete without fines, that pervious concrete. In the 1960s the United States began to ordinary concrete ground and water permeability concrete mix design method of research. 1995, Southern Illinois University, Nader Ghafoorim elaborated summary does not contain fine aggregate concrete. It proposed the concept of pervious concrete to discuss pervious concrete paving materials using techniques as its nature and state physics, especially the impact of strengthening law discussed research, reinforced when discussing energy, effects, deployment, manufacturing Influence of physical and mechanical properties of hardened concrete floor when produced technology; and also in terms of abrasion resistance and frost resistance are described. In Japan, in order to address the extraction of groundwater caused by ground subsidence and other issues, in the late 1970s, he proposed the "underground rainwater reduction policy" and to start developing permeable concrete paving and applied in practical engineering. Since then pervious concrete gradually been concerned about. Permeable concrete technical parameters: porosity: about 15% --20% Relative density: permeability coefficient of about 2.0: more than 2mm / s 28 days flexural strength: more than 4.5MPa 28-day compressive strength: more than the performance benefits of pervious concrete 25MPa : 1. can reduce a burden when precipitation concentrated urban drainage facilities to prevent river flooding and who mention pollution. 2. allow rainwater into the ground quickly, reducing groundwater, soil moisture retention. 3. Prevention of Road area of ??water, the night is not reflective, increase road safety and traffic comfort. 4. Adjust the temperature and humidity of urban space, improve urban heat circulation, ease the heat island effect. 5. The large porosity can reduce road noise when driving the vehicle, creating a comfortable traffic environment. 6. The city can absorb a lot of voids contaminants (such as dust), to reduce dust pollution. 7. Easy to maintain, the gap will not be damaged and difficult to jam. 8. The pattern can be designed to fully and surroundings tuberculosis. Color pervious concrete - pervious concrete - permeable floor - pervious concrete price - permeable flooring manufacturers, stone manufacturers supply Shanghai hope! ! Welcome to consult! ! Color strong permeable concrete floor [C25] permeable material, Shanghai factory direct wholesale discount now, domestic and industrial water still rely primarily on groundwater. Over-exploitation, making a sharp decline in the water table, surface ecology began imbalance, environmental problem is getting worse. Rational use of the original soil surface transparent maximize maintain the original state of nature has become a focal point of mankind can not be ignored.