"Snow removing bitumen" is on the stage in Beijing        

Recently, according to the relevant staff, it is possible for Beijing to try out high tech "snow removing bitumen" in the maintenance of some bridge surfaces and ramps next year. Once snow, these "snow removing bitumen" will automatically release chemical elements and remove ice and snow. Believe in the use of investment, can make the road unimpeded.

In the winter, Beijing will snow, snow will freeze, which is the driver's most afraid. Is there any technology that can make the road free from freezing? According to the deputy stationmaster of Beijing road engineering quality supervision station, there are two kinds of roads except ice and snow. One is the active removal of ice and snow, the other is the passive removal of ice and snow. The common sowing sodium salt in life belongs to the passive ice and snow. If the potassium formate is put into the asphalt, the ground will be able to remove ice and snow on its own initiative. "It's environmentally friendly except for ice removal. It's not like we have some of the road, and when the snow melt is scattered, it will go to the road with the ground run-off."

"Snow removing bitumen" is on the stage in Beijing

"It is necessary to put the potash of the formic acid into it in the production of the asphalt mixture, and once it has snow, it can be released slowly and automatically, clearing the ice and snow." Beijing as early as 2012 of this material were studied, which was mainly to do is "beauty", the snow melting agent instead of a part of the base material in asphalt mixture, this process in the snow, snow melting agent will automatically release on the road. In fact, it reduces the freezing point of the snow and makes it difficult to freeze the road. "This road has been repaired on the 108 National Road, mainly on the bridge, as well as on the steep slope roads in Huairou and Yanqing."

In spite of this, the high-tech material is not perfect. Now, some of the materials can not freeze when they reach -5 degrees. Some of them can reach -10 degrees without icing. In the face of snowfall, this new material can only be achieved without freezing when it snows. Once snow is heavy, it will rely on artificial snow removal.

In addition, the snow melt agent in the asphalt is expensive and has a limited life span. It needs to synchronize with the upper layer of the asphalt mixture. Studies have shown that, whether 5 centimeters or 3 centimeters are paved, the ultimate effect is only the surface of the road. Therefore, the researchers are also studying a 2 centimeter super thin layer to reduce the cost of the new material.

"In 2016 we have a corresponding project to use this new technology." Considering many factors, the traffic department of Beijing will only use some key nodes and sections. For example, the temperature of the bridge deck is lower than that of the surrounding road, and there are some ramps with larger ramps, which will cause greater safety risks if the snow is not timely.

At present, researchers are experimentation on a ramp on a ramp in the city's urban area, and the data are still in observation. In the next step, the city of Beijing may decide whether to use this new technical material in the course of road maintenance according to the tracking observation report or the test data.

It is believed that by virtue of human intelligence, the "Snow - removing bitumen" can be used at an early date and make the road more comfortable.