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The important role of permeable bricks for urban garden construction

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更新时间:2018年06月11日12:43:01 打印此页 关闭 Hits: 1825 Updated: June 11, 2018 12:43:01 Print this page Close
The use of ecology will be promoted in Guangzhou's landscaping Pervious brick . On March 14th, the Guangzhou Municipal Bureau of Landscaping and Landscaping leaked, the ecology that "can drink water" Permeable bricks are officially judged by the results of experts, and it is expected to be further applied in pavement and other roads such as landscaping, municipal journeys, and parking lots.

For a long time, the streets, squares, and courtyards of residential quarters in cities have been paved with granite, cement, and glazed tiles. Therefore, almost all cities are facing the same dilemma: On the one hand, many rainwater on the hardened ground cannot penetrate the ground, and the groundwater level is lowered without rainwater compensation, affecting the growth of flowers and trees on both sides of the journey. On the other hand, the accumulated water on the hardened road surface in rainy days brings inconvenience to pedestrians and traffic, and even waterlogging due to incomplete urban drainage equipment, which increases the burden of the dredging system and pollution of rivers.

In addition, the surface of the hardened ground is too monotonous, which is not only easy to form dust, but also unable to conduct heat, which increases the urban heat island effect and worsens the living environment.

Some experts from the Guangzhou Municipal Bureau of Highway Administration and Gardens said that ecological The permeability of the permeable brick is above 95%, and it can trap a lot of surface water. Due to the extra structure, even if it rains, it is paved The permeable brick pavement can actively penetrate the ground and enter the ground, which is useful to compensate the city's increasingly dry groundwater resources. other, Most of the data of permeable bricks are based on throwing away leftovers from construction waste, which saves energy and reduces costs. "More importantly, this experimental Permeable bricks can carry vehicles under 15 tons. "

透水砖铺装 前期首要用于改进路面的防滑性。 It is understood that the early stage of permeable brick paving is mainly used to improve the slip resistance of pavement. With the deepening of its research, water-permeable paving is gradually being used for journey creation. In foreign countries, the research on water-permeable pavement in some developed countries is now at a relatively advanced level, and some countries have also formulated laws and regulations on water-permeable pavements, which have achieved great results. For example, Germany has used permeable materials to pave the road since the 1960s. Its policy is to transform 90% of the roads in cities across the country to permeable roads by 2010. In the early 1980s, Japan launched the "rainwater penetration plan", which has developed permeable asphalt and concrete paving materials, which have been used in park squares, parking lots, sports fields, and urban journeys.

In China, as the process of urbanization opens up, the city's water-permeability is constantly weakening. Various impenetrable roads, places and large-scale foundation equipment “enclose the city”, making it unable to “breath” in a leisurely way, which not only destroys the ecological environment of the city, but also brings a lot of bad luck to the city.

However, as people gradually realized the importance of permeable materials for urban journeys, some urban municipal engineering sections began to be constructed and renovated using water seepage talents. Pervious brick . According to rare statistics, general cement From the advent of permeable bricks in 1995 to 2005, less than 10,000 square meters were evenly promoted each year. National General Cement in 2006 The use of permeable bricks has soared to about 1 million square meters. The permeable brick mall has a capacity of about 5 million square meters.

And people The close touch of the permeable brick can be traced back to the 2008 Guangzhou World Energy Conservation and Environmental Protection Exhibition. At that time, there was such a kind called ecological sand foundation The floor tiles of permeable bricks caused a great curiosity for the visitors: no matter how much rain it passes, The permeable bricks can enter the ground at the first time, they will not form water on the ground, and they can also be non-slip.

Nowadays, the surface of most cities is covered by concrete pavement. If the city can have the same function as a hump, it will collect rainwater during the dry season and make good use of it to alleviate the "hunger and thirst" during the drought. Many gardeners lamented.

"The permeable pavement data has a large porosity and can accumulate more energy, which is conducive to dispatching the temperature and humidity of the urban surface. It is 6 ° C lower than the asphalt surface temperature and can effectively eliminate the heat island effect." Guangzhou Shengtai Weiye Technology A company official said that due to the ecological The environmental protection effect of permeable bricks , rainwater can actively enter the ground surface and be reduced to groundwater. The water permeability and permeability of the traveling surface and adhere to the soil moisture will undoubtedly have a very good effect on improving the ecological balance of the urban surface.

Ecology Permeable bricks paved colorful road Baosteel slag changed from "ugly duckling" to "beautiful lady"

In April, the steel city was picturesque. Walking on Weisan Road, Baosteel's headquarters, the careful staff will find that the floor tiles on the sidewalk have been changed into colorful ones. When the weather is fine, the sun shines through the treetops and is projected on the road. The colorful tiles here are ecologically made from steel slag just developed by Baosteel. Pervious brick .
  
Over the years, Baosteel has continuously investigated the use of steel slag, and has successfully announced new construction materials and insulation materials such as steel slag fine powder and dry powder mortar, etc., with more than 10 uses. At the end of the previous year, Baosteel first built steel slag in the industry. Production line of permeable bricks . The production line is independently integrated by Baosteel Open Company's data company, with an annual output of 50,000 square meters.
  
Steel slag The permeable brick uses Baosteel roller slag as the material, and mixes the foundation materials such as yellow sand, cement, stone chips, crushed stone, etc., and then passes through a protection cycle after cloth, bond forming and other processes, after all, it becomes a city square, High-grade floor tiles selected for large public places such as sidewalks and garden walkways. Compared with similar pavement bricks in shopping malls, steel slag The permeable brick has the characteristics of strong water permeability, good compression resistance, and high strength. It is a building material for beautifying the road surface and preventing water accumulation. In addition, The permeable brick has excellent ventilation function, which can absorb heat by evaporating water, which has a significant effect on mitigating the urban heat island effect. Up to now, colorful steel slags have been laid on the sidewalks on both sides of the 3rd Weft Road of Baosteel's headquarters. Besides the permeable brick , the thumb square on the side of Weishi Road also used steel slag. Pervious brick .
  
With the continuous expansion of the city scale, people's requirements for urban public equipment have gradually progressed. Pervious bricks have a vast market prospect. For Baosteel, the inherent advantages of steel slag resources can effectively reduce Production cost of permeable bricks , for further opening The industrialization journey of permeable bricks has clear conditions. It is reported that plans for industrialization have now been formed.

Ecology Pervious bricks keep the city breathing

Bangmin The pavement paved with permeable bricks is not only a problem of the pavement data itself, but also the support of the subgrade, the system for collecting water, and a series of related skills. But now, our skill level can't meet such requirements.
Since the people The permeable brick has excellent air-permeable and water-permeable functions. Permeable bricks are even more effective in soaking moisture and reaching the effect of dispatching humidity.
City laid The permeable brick is the same as adding aerobic breathing to the city, making the whole air more fresh and natural.
Before the endurance, most of the city's streets, squares, and courtyards in residential quarters were paved with granite, cement, and glazed tiles.
As a result, all cities are facing the same dilemma. On the one hand, many rainwater on the hardened ground cannot penetrate the ground, and the groundwater level drops because it cannot receive rainwater compensation;
On the other hand, the accumulated water on the pavement surface hardens on rainy days, causing inconvenience to pedestrians and traffic, and even waterlogging due to imperfect urban drainage equipment. The outbreak of a new type of Jianling brick can actively absorb water on the surface.
After the brick is soaked, water moves between the bricks and the bricks, after all, it flows into the underground drainage pipe. If laid on the city's streets Permeable bricks can reduce municipal drainage capacity even in heavy rainfall and prevent road area water.
In addition, Jianling bricks can also absorb heat and regulate the temperature and humidity of some surface spaces, which has a greater effect on mitigating the urban heat island effect.
of course There are also some defects in permeable bricks . His cushion cannot use concrete cushion, because the use of concrete cushion has lost its selection. The meaning of permeable bricks , water cannot pass through the Jianling brick to enter the bottom layer, and it will form stagnant water.
In order to make Jianling bricks permeable, fine sand is used as a cushion during construction. The bricks and bricks are not bonded with mortar, but fixed on the sand layer by the effect of kneading.
This can sometimes lead to outbreaks of road inequality. But there is no need to worry about the compressive talent of Jianling Bricks, The permeable brick is small in size and high in thickness, and has relatively high compressive talent.

Ecology Pervious bricks "add bricks and tiles" to the city

"Look, this is how water permeates from bricks. When it is paved on the road, it can absorb, retain, and release water. It can also regulate air humidity and absorb suspended particles to reduce haze." Pico in Oasis Zhang Cuimei, the director of Shaanxi Sunshine Rain Ecological Technology Co., Ltd Pervious brick .
It is understood that the reason why this brick is called an ecological product, because it uses urban construction waste as a material, while beautifying the environment also adds artistic color to the city. The permeable brick has excellent moisturizing function, which can well alleviate the "urban desertification" and "heat island effect" caused by the imperviousness of urban floor coverings. It can also compensate for the increasingly dry groundwater resources in urban areas and play a role in the storage of permeable roadbeds. Pool function.
The company's chairman, Xing Jingfei, was the project leader of Weinan Engineering Construction Company. In 2002, he inquired abroad and found that there were large-scale water storage tanks underground in developed cities, which ensured smooth drainage during the flood season and completed the reasonable use of rainwater. After returning home, he decided to resign, and after four years of painstaking research, in 2006, he announced that ygy's minimally invasive water-permeable skills and high-performance water-permeable agents were passed by the Ministry of Science and Technology.
"Our southern city has a severe haze phenomenon. The first is monotonous air. Suspended particles cannot settle in time due to lack of water vapor adsorption. Permeable bricks can help improve this phenomenon. Xing Jingfei informed the reporter, "This kind of Permeable bricks are 20% more expensive than ordinary bricks, but we will continue to develop and gradually reduce the cost to make them more affordable. "
Since December of last year, the company has successively created supply products for the Xixian New District, and has now been widely used in Guangzhou New District.
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