Learn about the volatile content of medium-temperature bitumen.
Medium temperature asphalt is a common asphalt product, which is characterized by good high temperature stability and low temperature crack resistance, so it is widely used in road construction and waterproof materials. However, medium-temperature asphalt will release a certain amount of volatile matter during use, which will have a certain impact on the environment and human health. This article will focus on the volatile content of medium-temperature asphalt and its control methods.
1. Medium temperature asphalt volatiles.
Medium-temperature bitumen is extracted from petroleum, and its main components include saturated hydrocarbons, aromatic hydrocarbons and gums. Under high temperature conditions, these components will undergo thermal decomposition and oxidation reactions, releasing some harmful substances, such as benzopyrene, formaldehyde, ammonia, etc., which will cause harm to the environment and human health. In addition, in the process of production, storage and use, medium-temperature asphalt will also be affected by some external factors, such as temperature, oxygen, light, etc., resulting in changes in its composition and volatile matter.
Second, the control method of volatiles of medium temperature asphalt.
In order to reduce the volatiles released during the use of medium-temperature asphalt, the following methods can be taken:
1.Use high-quality raw materials.
Choose high-quality raw materials such as low sulfur, low wax and low nitrogen to reduce the volatile content in medium temperature asphalt from the source. At the same time, the quality control of raw materials is strengthened to ensure that their composition and performance meet the requirements of the standard.
2.Optimize the production process.
Advanced distillation technology and equipment are used to improve the refining accuracy and purity of medium-temperature asphalt, and reduce impurities and harmful substances in it. At the same time, strengthen the quality control in the production process to ensure that each batch of products meets the quality standards.
3.Strengthen storage and use management.
In the process of storage and use, the temperature and humidity should be strictly controlled to avoid the oxidation reaction of medium-temperature asphalt affected by the external environment. At the same time, strengthen the testing and supervision of products, find and deal with unqualified products in a timely manner, and ensure the quality and safety of products.
4.Use additives.
For the volatile matter problem of medium-temperature asphalt, some additives can be added to improve its performance. For example, the addition of antioxidants can inhibit the oxidation reaction of medium-temperature asphalt;The addition of flame retardants can reduce the risk of combustion in medium-temperature asphalt;Adding waterproofing agent can enhance the waterproofing performance of medium-temperature asphalt, etc. However, when using additives, it is necessary to pay attention to the selection of appropriate varieties and dosages to avoid adverse effects on the environment and human health.
3. The impact of medium temperature asphalt volatiles on the environment and human health.
The volatiles released by medium-temperature asphalt can have a certain impact on the environment and human health. Among them, benzopyrene is a carcinogen, and long-term exposure can cause harm to human health;Harmful gases such as formaldehyde and ammonia can also have an impact on the body's respiratory and nervous systems. In addition, the volatile matter of medium-temperature asphalt will also cause pollution to the atmospheric environment and soil environment, affecting the balance and stability of the ecosystem.
IV. Conclusions. The volatiles released during the use of medium-temperature asphalt are a problem that cannot be ignored. In order to reduce its impact on the environment and human health, a series of control methods should be adopted to reduce the volatile content of medium-temperature asphalt. At the same time, it is necessary to strengthen the testing and supervision of products to ensure that each batch of products meets the quality standards. When using additives, it is necessary to pay attention to the selection of appropriate varieties and dosages to avoid adverse effects on the environment and human health.