Permeable bricks solve the phenomenon of waterlogging in rain and help sponge cities
To alleviate the phenomenon of urban waterlogging, in addition to regulating river channels, transforming underground pipe networks, adding drainage equipment, and building reservoirs to increase storage capacity, it is also a useful method to increase the penetration of urban distance. Speaking of which, I have to talk about a product that is closely related to the ceramic operation-produced by Guangzhou Wanxin Cement Product Factory Pervious brick . In fact, as early as a few years ago, with the concept of the "sponge city" being put forward, a variety of water permeability materials in the shopping malls have been on the rise. Based on the “Lessons on Promoting Sponge Cities” published in 2015, “ Permeable brick "has become a new type of ecological building material vigorously promoted by the country. Classification and principle of permeable bricks general Permeable brick : the data is the porous concrete data of ordinary crushed stone, which is formed by restraint. Polymer fiber concrete Permeable brick : The materials are granite aggregate, high-strength cement and cement polymer reinforcing agent, and blended with polypropylene fiber, the feeding ratio is tight, and it is bound to form after mixing. Color stone composite concrete Pervious brick : The material surface layer is glued with natural colorful granite, marble and modified epoxy resin, and then bound and formed with polymer fiber porous concrete at the bottom. Color Stone Epoxy Body Permeable brick : The aggregate of the material is natural colored stone and imported modified epoxy resin, which is formed by special process. Concrete Permeable bricks : The concrete products are made of river sand, cement, and water, and a certain proportion of permeant is added. Ecological sand base Permeable brick : It is a permeable principle that passes through "damaging the external tension of water". It is useful for processing traditional pervious materials. It is easy to be blocked by dust when permeated through pores. A new type of eco-environmental protection data that takes shape as a result of desert aeolian sand. The ceramic materials are used for sieving and selecting materials, arranging reasonable particle gradation, adding binder, and then forming, drying, and sintering at high temperature. ceramics Benefits of permeable bricks ceramics Permeable brick is the primary application for sponge transformation One of the categories of permeable bricks , as a combination of ceramic tile characteristics Pervious brick , according to the current situation, ceramics Pervious bricks have the following benefits: High temperature firing, high product strength. According to reports, now ceramics Most of the permeable bricks are sintered at a high temperature of 1200-1300 ° C. They are a combination of the physical components between the particles and then cooled, and the strength is generally greater than 40 MPa. Good water permeability. Selecting a reasonable particle gradation can sensitively pass the precipitation from small to moderate rain. Good freeze-thaw resistance. Because ceramics Permeable bricks have large inter-particle pores. The combination is sintering. It has excellent resistance to freezing and thawing in the north and can handle cement well Permeable bricks have good water permeability but are resistant to freezing and thawing, and difficult to freeze and thaw. Good anti-slip function. The particles on the surface are thicker, and the rainwater penetrates quickly. There is no water accumulation after the rain and snow, and it does not form an ice layer. The anti-skid effect is the best. Outstanding ecological and environmental protection function. Industrial waste such as ceramic waste, sewage sludge particles, waste refractory, and overheating concrete can be selected for production, and can be reused. After being broken, it can be fired into bricks again. Improve the urban microclimate and block the composition of urban floods. ceramics The porosity of the permeable brick is 20-30%, and it has excellent water storage talent. In summer, the water is saturated and soaked into the ground after the rain to nourish the atmosphere, conserve water, and supply water to trees and flowers. When the sun is intense, Evaporation of water can reduce surface temperature and improve microclimate. If a large area pavement is formed, it can effectively block rainwater and reduce the probability of urban flood formation. Permeable brick mall capacity Based on the "Lessons on Promoting the Creation of Sponge City" issued in 2015, after the sponge city was created, the methods of "seepage, stagnation, storage, cleanliness, use, and drainage" were selected to minimize urban development and create an ecological environment. 70% of the rainfall will be absorbed and used locally; by 2020, more than 20% of the urban built-up area will meet the guidelines; by 2030, more than 80% of the urban built-up area will meet the guidelines. To reach this goal, " Permeable brick "has become a new type of ecological building material vigorously promoted by the country. ceramics Permeable brick status According to incomplete accounting, ceramic enterprises in Guangxi, Jiangxi, Shandong, Guangdong, Sichuan and other places have continuously invested Production of permeable bricks , when conventional ceramic tile products fell into the dilemma of price wars and slow sales, ceramics The production and sale of permeable bricks has shown a relatively hot situation, and the growth momentum is very considerable. It is understood that, with the strong support of the guidelines, there are now 30 cities in China that have opened sponge cities to create national pilots. According to the founding plan of the national sponge city at that time, by 2020, more than 20% of the area requirements of 658 urban built-up areas nationwide reached design standards, and the total annual investment in the country is estimated to exceed 400 billion yuan; by 2030, 80% of urban built-up areas The above area meets the policy requirements, which means that the required funds are about 1.6 trillion yuan.