After the asphalt mixture is paved, it enters the compaction process. Compaction of asphalt mixture is an important aspect of asphalt pavement construction and a very important process. In the process of pavement compaction, sufficient large tonnage compaction equipment must be equipped, and the most advanced double wheel vibratory roller shall be selected as far as possible.

Since compaction equipment is mentioned, it is necessary to mention asphalt mixing equipment, namely asphalt mixing plant, which is a machine specially used to produce finished asphalt. The quality of asphalt also affects the service life of asphalt pavement to a certain extent. Here, there is a website link address. Click to learn about various types and models of asphalt mixing equipment to help your road construction project development.

The compaction links of asphalt pavement generally include the following aspects: initial compaction of pavement, re compaction of pavement and final compaction of pavement. First, the initial compaction of the pavement. Initial compaction is the first step of pavement compaction. Generally, this step is directly carried out after the mixture is paved. At this time, the temperature is high. Generally, the vibrator is used for vibration extrusion first. After the vibration, the vibration device is turned off and the pavement is slowly rolled for 2-3 times. The temperature of the initial compaction step is generally kept between 110-140 ℃. Therefore, compaction equipment with small tonnage can achieve good results. Similarly, small asphalt mixing plants are popular. After all, the general asphalt stations are relatively large and expensive, and the general construction project contractors and individual investors seldom use them. Here we recommend a mini portable asphalt plant with reasonable price, wide use, simple operation and strong flexibility. For details, you can browse the link here (https://ltasphaltplant.com/mini-portable-asphalt-plant/) for specific information. In general, 6-8 ton double drum roller can be used. In the process of rolling, the driving wheel shall move forward at a constant speed and move backward according to the rolling direction when moving forward. During the initial compaction of asphalt pavement, relevant technicians shall check the flatness and crown of the pavement after the initial compaction, and immediately correct any problems found. In case of displacement during pavement rolling, the rolling can be carried out after the temperature becomes low. In case of transverse cracks, the causes shall be checked and corrective measures shall be taken in time.

Secondly, re compaction of pavement. The re compaction of pavement is an important stage in the compaction process. The re compaction is mainly used to ensure the stable formation of asphalt mixture. Therefore, the re compaction process is generally carried out under high temperature and immediately after the initial compaction process. Under normal circumstances, the temperature of the pavement re compaction link should be kept at 120-130 ℃. Generally, the double wheel vibratory roller is used to roll the pavement. The same method as the initial rolling can be used in the rolling method. The rolling frequency should be more than 6 times. Only in this way can the stability and firmness of the pavement be guaranteed;

Third, final compaction of asphalt pavement. The final compaction is the last step to eliminate wheel marks and defects and ensure a good flatness of the surface. As the final compaction shall eliminate the unevenness left in the surface course during the re compaction process and ensure the flatness of the pavement, the asphalt mixture shall also be rolled at a high but not too high rolling temperature. The temperature at the end of final pressing shall be greater than 90 ℃. In the link of final compaction of pavement, static double wheel roller is often used for final compaction and shall be carried out immediately after re compaction. The number of rolling passes is 2-3. Through the combination of initial compaction, re compaction and final compaction, the smoothness, stability and thickness of asphalt pavement are ensured, and the overall quality of asphalt pavement is improved.