Why do the roads in China keep being renovated, but Japan is always as new, is it not as good as others?

With the development of the economy, China's transportation system has gradually improved. In addition to various means of transportation, there is also the construction of infrastructure. From a national perspective, the construction of highways is very important. Up to now, the mileage of highways built in China has exceeded 5.28 million km. It can also be seen from the economic development of various places that the construction of highways has improved the traffic conditions in the region, and the unimpeded logistics has also stimulated the growth of the regional economy.

However, there is a very strange phenomenon on China's highways, that is, they are often renovated. In contrast, Japan's roads are as new all year round, and may not require too much manpower and material resources for maintenance in a few years. So is the difference between Chinese roads and Japanese roads due to the difference in road construction technology?

The main reason why Japan's roads remain as new all year round is that the quality of asphalt used in the process of road construction is relatively good. Generally speaking, the asphalt used in Japan when laying roads is imported Trinidad Lake asphalt and petroleum asphalt. Compared with ordinary asphalt, the quality of this asphalt is superior, but the cost is also very high.

Due to the vast territory of China and the large number of road miles required to be constructed, it is impossible to use all of this asphalt for paving. However, relatively speaking, due to the small land area of ​​Japan, the number of highway mileage required to be constructed is not much, so using this kind of high-cost asphalt for paving will not have much cost burden.

In addition, the objects of road transportation between China and Japan are also different. There is very little heavy industry in Japan. When there are relatively few heavy industries, the transportation frequency of large-scale goods will be reduced a lot. The vehicles that can travel on Japanese roads are generally small cars. In the absence of bulk commodity transportation, the losses faced by Japanese highways are naturally relatively small.

The national conditions faced by China and Japan are different, and the road construction method adopted by Japan may not be suitable for China. Although they are all roads, the factors that need to be considered are also different in different actual situations. Therefore, the development directions of Chinese highways and Japanese highways are different, and there is no practical comparison between the two.

Since the 1980s, China's economic development has entered a new period. One of the prerequisites for economic development is the improvement of traffic conditions. In this regard, the construction of highways in China has been gradually implemented, and it has also achieved tremendous success in a short period of time. results. However, it is undeniable that the construction level of highways in some sections is not satisfactory. It may be long after the completion of the construction that cracks, potholes and other damages will occur. It is also normal for expressways to be repaired all year round. So what are the reasons for the frequent renovation of Chinese roads?

The first is cost. In principle, the use of asphalt paving is indeed beneficial to the improvement of road construction quality, and asphalt can also absorb noise to a certain extent. When driving on asphalt roads, drivers can also enjoy higher comfort, and the better the quality of asphalt can achieve, the better.

It's just that in the early days of China's highway construction, the main purpose was to improve traffic conditions to develop the economy. In addition, China's land area is too large, and there are too many road mileages to be built, so it is impossible to use high-quality asphalt to build roads. Most of the asphalt used is made in China. Due to the limitation of technical conditions, the domestic asphalt at that time may have defects in quality.

It should be noted that with the development of time, China's asphalt refining technology has also been improved, and the quality of asphalt has also been more guaranteed, so the quality of the roads built in China is far better than those built in the 1980s. highway.

Secondly, the construction time of each section of highway in China is relatively short. On the one hand, in order to better develop the economy, it is urgent to build a highway, so China cannot build a highway in three or four years like Japan. On the other hand, with the improvement of people's income level, the number of cars is increasing, and there is a greater demand for the number of roads and lanes.

If it takes too long to build a highway, it will cause serious traffic congestion problems. Therefore, the time it takes to build a highway in China is relatively short, and it usually takes two months to build a highway. As the so-called slow work and careful work, although these roads that have been completed in a short period of time can be temporarily put into use, they will also be damaged to a certain extent due to the impact of the rolling of cars and the erosion of rainwater.

Finally, the problem of overloading is also a reason for the shortened lifespan of Chinese roads. Large trucks are one of the most common objects on the road. With the development of China's heavy industry and manufacturing industry, the weight carried by many large trucks is very large, which will cause greater pressure on the road. And some drivers may experience overloading in order to reduce fuel consumption costs. Over time, the road is very likely to crack under the daily crushing of overloaded trucks.