Petroleum asphalt sheet is a common building material, which is widely used in roads, bridges, construction, and other fields. Its characteristics are of great significance for ensuring the quality and service life of the project. The following will introduce the physical properties, chemical properties, mechanical properties and environmental adaptability of petroleum asphalt sheet in detail.
1. Physical properties.
Petroleum asphalt sheet is a black or dark brown solid or semi-solid material, usually in the form of sheets or blocks. Its density is larger, generally in 10～1.2 grams between cubic centimeters. At room temperature, petroleum asphalt sheet has a certain plasticity and viscosity, and can bond various materials, such as stone, mortar, etc. At the same time, petroleum asphalt sheet also has good water resistance and durability, and can resist wind and rain erosion and oxidation.
2. Chemical properties.
The main component of petroleum asphalt sheet is a mixture of aromatic hydrocarbons and naphthenes, and also contains a small amount of resin and asphaltene. These components determine the chemical properties of petroleum asphalt sheets. At room temperature, petroleum asphalt sheet is not easy to have a chemical reaction with water, but under the action of high temperature or oxidant, chemical reactions such as oxidation and hydrolysis will occur. In addition, petroleum asphalt sheet also has a certain resistance to acid and alkali corrosion, which can resist the erosion of chemicals.
3. Mechanical properties.
The mechanical properties of petroleum asphalt sheet are one of the key factors to ensure the quality of the project. It has high compressive and tensile strength and can withstand large compressive and tensile forces. At the same time, the elastic modulus of petroleum asphalt sheet is small, and it can undergo a certain deformation under pressure and is not easy to break. In addition, petroleum asphalt sheet also has good adhesion and toughness, and can be tightly combined with various materials to improve the overall performance of engineering structures.
Fourth, environmental adaptability.
Petroleum asphalt sheet has strong adaptability to temperature and humidity changes, and can maintain good performance under different climatic conditions. At the same time, petroleum asphalt sheet also has strong durability, can resist wind and rain erosion and oxidation, and maintain its performance and service life for a long time. In addition, petroleum asphalt sheet produces less harmful substances in the production and construction process, which meets environmental protection requirements.
To sum up, petroleum asphalt sheet has excellent physical properties, chemical properties, mechanical properties and environmental adaptability, and is a building material with excellent performance. In practical application, the characteristics of petroleum asphalt sheet should be fully understood, and materials should be reasonably selected and used to ensure the quality and service life of the project. At the same time, we should also pay attention to the environmental protection in the production and construction process of petroleum asphalt sheet, and promote the development of green buildings.