Is asphalt pavement toxic to human body?

Asphalt pavement is harmless to human body.

In the process of asphalt pavement construction and molding, the highly irritating smell has a slight impact on human body at close range, but it cools normally after molding, and there will be no change in quality and quantity at room temperature, which meets the requirements of environmental protection.

In addition, asphalt contains certain toxic substances, but the toxic substances in asphalt are not volatile, and there is no report of dangerous carcinogens in asphalt at present, so asphalt is still widely used in waterproof engineering and road engineering in developed countries. Using asphalt in parts that are not in direct contact with human body will not harm the health of users.

It is understood that the toxic substances in asphalt are non-volatile substances, and it takes about 300 degrees Celsius to volatilize. In the asphalt construction of urban roads, the construction temperature of asphalt concrete is 150- 170 degrees Celsius, which is far from the volatilization point of toxic substances. Even in hot summer, the softening point of the molded modified asphalt road is high and will not change at room temperature, which can meet the requirements of environmental protection and safety.

Extended data:

Asphalt pavement improves road quality;

1, because of the convenience of asphalt road maintenance, it has obvious advantages in improving traffic flow in busy urban areas;

2. Asphalt pavement is a kind of flexible pavement, which is comfortable to drive, and is very beneficial to the wear resistance of vehicle tires or suspension systems (damping systems), which can reduce environmental noise and improve the quality of life of citizens;

3. The black asphalt overlay reduces the glare when driving, and the white traffic markings are more eye-catching, which can improve the safety factor of driving and enhance the beautification of the environment.

People's Daily News This year, 230 roads in Nanning will be resurfaced with asphalt.