Are the gas of high temperature and asphalt considered?
The Shell Companies has investigated that people who regularly operate asphalt are not at risk of occupational health, and there are no environmental health problems in the manufacture of bitumen and during exposure to asphalt. In view of the general processing temperature of asphalt more than 100 DEG C, the main risk is in direct contact with the hot asphalt Shuo caused by burn.But what kind of asphalt should asphalt be distinguished from?. Through animal experiments, the pathogenesis of mice exposed to coal tar pitch on the skin epidermis and papillary tumor canceration rate is more than 90%, less than 0.5% and the occurrence of skin cancer exposed to petroleum asphalt, only 2% papilloma.Research by the WHO's International Cancer Institute has shown that bitumen has been used for years, but there is no direct evidence that long-term skin diseases are related to bitumen, but should avoid direct contact with the skin.Therefore, petroleum asphalt is not toxic, but it is a special type of high temperature.
This.. It must be harmful to human health, but it is hard to say that it is not toxic
I have a friend, in the construction area contracted section 100, please paver, paving asphalt and roller compaction, the cost is probably how much? Need equipment: paver one, your area is 500 square meters, the basic cost is 12
