Asphalt Driveway Resurfacing

Asphalt roads need to be resurfaced after a period of actual use, which is mainly because with time, with the increase in the use of time, asphalt pavement due to a variety of vehicles frequently traveling the wear and tear suffered by the damage continues to grow to a certain extent, after the asphalt pavement will need to be replaced or repaired promptly.      

At the same time, climatic factors also have an impact on asphalt pavement, such as the high temperature in the summer weather, as well as the frequent extreme weather in recent years, which will lead to asphalt pavement softening and deformation, long-term use of asphalt roads will also produce cracks, potholes, and other conditions, affecting the safety and comfort of vehicles traveling, so it will also need to resurface the asphalt pavement.

Therefore, regular inspection and maintenance of asphalt driveways, timely detection of problems, and resurfacing can effectively extend the service life of the road, enhance the driving experience, and ensure traffic safety.

The following are some of the situations that require resurfacing of asphalt driveways

1.Surface Damage: Cracks, potholes, or other forms of damage to the asphalt pavement usually signal the need for repair or resurfacing.     This is especially true if the pavement is loose, i.e. the bond between the asphalt and the aggregate is low, or the gaps within the mix are too large, all of which can lead to loosening of the pavement under repeated vehicular action, and resurfacing is required to restore the stability and safety of the pavement.

2.Useful life: The asphalt pavement maintenance cycle is relatively short, usually five or six years may need to be resurfaced once, which is to maintain the road's performance and extend its service life.

3.Grass-roots problems: If the quality of the grass-roots level of the pavement does not meet the requirements or the grass-roots level is not treated according to the regulations before asphalt paving, such as not spreading the permeable layer or adhesive layer of asphalt, in this case also need to resurfacing of asphalt driveways.

Preparing asphalt is an important process when resurfacing asphalt driveways.Preparing asphalt usually includes the following steps: Preparing asphalt is treated as a very important process when resurfacing an asphalt driveway.

First, the construction team has to make sure that the asphalt used meets the required specifications and is of consistent quality.  Then, the temperature of the asphalt needs to be strictly controlled when mixing it to ensure that it achieves the best pouring condition.

Adjusting the temperature and viscosity of the asphalt is the key to ensuring the actual effect of paving. Secondly, in the preparation of asphalt, you need to accurately measure the size and height of the paving area to ensure that the asphalt evenly covers and reaches the required thickness.

At the same time, the surface of the ground is cleaned before paving, removing debris and water to ensure the quality and durability of the paving.It is only after these preparations that a smooth asphalt paving process can be ensured.      

Thus, in the resurfacing of asphalt driveway, preparing asphalt is a need for fine operation and strict control of the link, only every detail is appropriate, to ensure that the final paving of the actual effect of the expected norms so that the ground regains a new life for pedestrians and vehicles to provide a safer and smoother access to the environment.

1. According to the ground use and climatic conditions choose the appropriate type of asphalt.This may include modified asphalt, polymer-modified asphalt, rubberized asphalt, and so on.
2. Bitumen Processing: The solid bitumen is de-barrelized and heated to the required temperature, while the asphalt heating tank is used for storage.
3.  Mixing Bitumen and Aggregate: The melted asphalt and aggregate are mixed according to the required ratio.      At the same time, the sub-ah mixing process is always concerned with ensuring that by the requirements of the mixing.      The mixture must be uniform, with no white material, no coarse and fine material segregation, and caking phenomenon, and do not meet the requirements of the discarded.
4. Transportation: according to the output of the mixing plant, transportation distance is a reasonable arrangement of vehicles.Transport the mixed bitumen mixture to the construction site.In the transportation process, to ensure the temperature of the asphalt mixture, you can use special asphalt transportation equipment.

5. Paving: According to the width of the construction site, use a high-density bitumen concrete paver with automatic adjustment of paving thickness and leveling device, heatable vibrating screed, and good operation for paving. The paver travels evenly, matching the travel speed with the mixing plant output to ensure even and uninterrupted paving of the paved surface. Do not change the speed during the paving process and try to avoid stopping in the middle of the paving process.

6. compaction: in the bitumen mixture paving good, immediately use the roller for compaction work. Compaction is divided into initial compaction, re-compaction and final compaction (including molding) three stages, each stage of the rolling speed should be in line with the requirements of the relevant specifications.

7. Cooling and Hardening: After compaction is complete, a period of time is required to allow the newly laid asphalt to cool and harden. This process can take several days to several weeks, depending on the type of asphalt and natural conditions.

Bitumen sections that need to be resurfaced also need to be prepared in advance, in order to improve the efficiency of the work we usually evaluate the time needed to achieve the same time as the preparation of asphalt, asphalt sections of the quasi this work is usually divided into the following steps

1. Preparation: Before resurfacing, we need to inspect and evaluate the existing bitumen pavement to determine its condition and to identify the sections to be resurfaced, and at the same time, to remove damaged pavement material.

2. Cleaning:Before resurfacing the bitumen, we will thoroughly clean the pavement to ensure that the newly laid asphalt will bond with the existing pavement. This includes removing oil, dirt, chips and other debris.

3. Spraying the tack coat: The sub-base layer is swept, and the base layer is sprayed with a penetrating oil two days before the sub-base layer is applied. Spray adhesive coating oil on the middle and bottom layers. 

Resurfacing bitumen driveways is a very effective method of road maintenance, which can increase the service life of the road and improve the performance of the road.