When we travel on the highways and main roads of the city, we may never think about what kind of scientific and technological power is behind the flat and wear-resistant road surface under our feet. High-viscosity asphalt, which is known as the "black technology" in the field of road engineering, is gradually becoming a new favorite in my country's road construction. This article will take you to explore the construction technology of high-viscosity asphalt and reveal the secrets behind this popular material.

1. The meaning of high-viscosity asphalt
High-viscosity asphalt, as the name suggests, is a kind of asphalt with high viscosity, which is usually used in asphalt mixtures in road construction. This asphalt material has a high viscosity and can better combine with other components of the road surface, thereby improving the stability, durability and deformation resistance of the road. At the same time, high-viscosity asphalt can also be further enhanced by adding modifiers, such as increasing the molding strength and deformation recovery ability of the mixture.
2. Advantages of high-viscosity asphalt
1. Excellent wear resistance: Under the action of vehicle load, high-viscosity asphalt can fully fill the gaps in the road surface, greatly improve the density of the road surface, and effectively improve the wear resistance of the road surface. This excellent wear resistance makes high-viscosity asphalt have significant advantages in the application of heavy-load traffic sections such as highways and urban roads, which can effectively extend the service life of roads and reduce maintenance costs.
2. Good crack resistance: During road construction, high-viscosity asphalt can effectively reduce the cracking tendency of the road surface and reduce road damage caused by cracks, thereby extending the service life of the road.
3. Excellent anti-aging performance: High-viscosity asphalt contains additives such as antioxidants and ultraviolet absorbers, which can effectively slow down the aging process of asphalt and protect the stability of the asphalt molecular structure. Under the influence of natural factors such as sunlight and temperature, high-viscosity asphalt can maintain good performance and ensure the comfort of road use. Excellent anti-aging performance is also conducive to reducing the frequency and cost of road maintenance and increasing the service life of roads.
4. Environmentally friendly: In the production process of high-viscosity asphalt, waste such as waste tires are used as fillers to realize the resource utilization of waste and reduce pollution to the environment. During the use of high-viscosity asphalt, the impact on the environment is small, which is conducive to achieving the goal of green and sustainable road construction.
3. High-viscosity asphalt construction process revealed
1. Construction preparation
Before starting the construction of high-viscosity asphalt mixture, a series of preparations need to be carried out. The first step is to select high-quality high-viscosity asphalt, mineral fillers and additives and other raw materials according to the design requirements. The quality of these raw materials directly affects the performance and service life of the mixture. It is also necessary to check and ensure that the construction equipment is complete, including the normal operation of facilities such as mixers, pavers, and rollers. The performance and operation methods of these equipment need to meet the construction requirements to ensure the quality and efficiency of the construction. During the construction, the construction site needs to be closed and managed to ensure the safety and sanitation of the construction environment and prevent safety accidents and environmental pollution during the construction process.
2. Mixture preparation
Put high-viscosity asphalt, mineral fillers and additives into the mixer in a certain proportion and mix them fully. During the mixing process, the mixing time and speed need to be controlled to ensure the uniformity and stability of the mixture. After the mixing is completed, the mixture needs to be tested to ensure that its performance meets the design requirements.
3. Paving operation
Pour the mixed high-viscosity asphalt mixture into the paver, and use the paver to evenly spread the mixture on the road base. During the paving process, the paving thickness and speed need to be controlled to ensure the uniformity and density of the mixture. At the same time, the paving process needs to be monitored to detect and deal with problems in a timely manner.
4. Rolling operation
After paving is completed, rolling is carried out immediately. First, a steel wheel roller is used for initial rolling to eliminate voids and unevenness in the mixture. Then a tire roller is used for re-rolling to improve the density and stability of the mixture. Finally, a vibrating roller is used for final rolling to further improve the density and flatness of the mixture. During the rolling process, the rolling speed and number of passes need to be controlled to ensure the performance and service life of the mixture.
5. Opening traffic
After rolling is completed, it is necessary to wait for the high-viscosity asphalt mixture to cool to a suitable temperature before opening to traffic. During the cooling process, the road surface needs to be monitored to prevent cracks and deformation caused by temperature changes. At the same time, the road surface needs to be regularly maintained and inspected to ensure its performance and service life.
The application of high-viscosity asphalt construction technology provides new possibilities for my country's road engineering construction. This innovative technology is of great significance in improving road performance, extending road service life, and reducing maintenance costs. In the future, with the continuous development and improvement of high-viscosity asphalt technology, I believe it will inject more vitality into my country's road industry and make our travel more convenient and comfortable.