Modified asphalt material is a new, efficient and environmentally friendly road material, which has received widespread attention and recognition. In the construction of airport runways, modified asphalt materials have also been increasingly used. This article will explain the characteristics of modified asphalt materials and their application advantages in airport runway construction.
1. Characteristics of modified asphalt materials
1. Modified asphalt materials refer to a new type of road material made by modifying traditional asphalt through chemical reactions, physical processing, etc. Modified asphalt materials have the following characteristics:
2. Good temperature resistance: After the modified asphalt material is modified, its temperature resistance has been greatly improved. In high temperature environments, modified asphalt materials will not soften and flow, which can effectively avoid road deformation and noise generated by vehicle driving.
3. Strong water resistance: Modified asphalt materials still have good anti-permeability and adhesion in humid environments, which can effectively avoid road cracking and sanding, and extend the service life of the road.
4. Good environmental protection: The modified asphalt material does not contain heavy metal elements that are harmful to the environment and human body, meets environmental protection requirements, and is harmless to the human body and the natural environment.

2. Advantages of modified asphalt materials in airport runway construction
1. High tensile strength: Modified asphalt materials can improve their tensile strength by changing their chemical composition and improving their physical properties. In the construction of airport runways, high-strength modified asphalt materials can effectively avoid cracking and sanding of the road surface, ensuring the safety of aircraft takeoff and landing.
2. Good wear resistance: Airport runways need to withstand a lot of take-off and landing friction and vehicle wear. In this case, traditional asphalt pavement materials are prone to cracking and peeling. Modified asphalt materials have good wear resistance and can effectively extend the service life of the pavement.
3. Good adhesion: Modified asphalt materials have good adhesion properties and can effectively bond the pavement to the base material to avoid pavement damage due to separation between the two.
4. Strong weather resistance: Airport runway construction is located in an area that is often eroded by the natural environment and climate change, so a material with good weather resistance is needed. Modified asphalt materials can maintain good performance in various natural environments and adapt to various climatic conditions.
III. Conclusion
Modified asphalt material is a new type of road material with high application value, and plays an irreplaceable role in the construction of airport runways. By changing its chemical composition and physical properties, the material's temperature resistance, water resistance, tensile strength, wear resistance, adhesion and weather resistance can be improved, making it more suitable for the use environment of airport runways. At present, the scale of airport operations in my country is constantly expanding, and the demand for materials is also growing. Therefore, the application prospects of modified asphalt materials are very broad, and they will continue to be promoted and developed in the future.