Concrete and asphalt are the two main materials used in paving. And although concrete is more expensive, it is much stronger and more durable than asphalt.
In the United States, the European Union and even China, roads made of concrete account for more than 60% of their total volume. But in Russia there are only 2% of them! This is one of the reasons for the poor quality of our transport network.
Most often, concrete is used in the construction of highways. The concrete pavement is tough, since cement is used as a binder.
As a result, such roads have better wear resistance. Unlike asphalt pavement, where the guaranteed service life without repair is 12 years, the service life of concrete reaches 30 years.
The cement-concrete road is 82% cheaper to maintain. She also
At the same time, the asphalt quickly deteriorates, it has to be repaired at least once a year. In most cases, the damaged coating is not removed, but instead the holes are simply patched up. Because of this, «patches» appear on the road, and with them irregularities.
The two main disadvantages of a concrete canvas are
The material has a porous structure that absorbs water. During frosts, water turns into ice and swells even the most durable canvas.
In addition, reinforced concrete tends to expand when heated and contract when cooled. In the conditions of the Russian climate with high temperature fluctuations, cracks will constantly appear on the concrete pavement.
In addition, the material itself is much more expensive than asphalt. Average kilometer of concrete road
Thus, what is good for America does not apply to most of Russia.