Asphalt maintenance can be classified into four parts. The leading cause of asphalt falling is due to the penetration of water into the base of asphalt with time it best brittle and dry, and later it starts to wear and tear. This causes cracks that least water into the pavement base.
When hits best deep into the crack, it makes the base material to live and settle. This, therefore, leads to the cracking of the surface in a grid-like pattern. Once the pavement is at this stage, you only have two options left, either you replace the old asphalt and repair it through asphalt millings.
This usually deals with isolated areas. You can use a backbone and saw-cutting to remove the pavement. You may also decide to use a grinding machine. Once the old asphalt has been removed, the new asphalt can be replaced. The removal method will determine the amount of asphalt to be removed.
However, the removal depth should be equal to one point five to the original thickness of the asphalt. It may also be necessary to remove the base rock so that it will be easy to match the adjacent areas and allow for support from the base and create uniformity. It is essential also to give that the removal should be extended at least twelve inches past the failed area.
The asphalt maintains an overlay is affordable as well as offers a new wearing surface. While dealing with the asphalt overlay, here are some things you should consider.
- Overlay Thicknesses
The overlay should have a maximum depth of at least 2.5 inches and a minimum of 1.5 inches.
- Smooth Transition
While considering the area to bring the pavement down, remember bit to grind in the area around the overlay section to match the existing structure. If this happens, the strength of the overlay will be weakened. It is essential to grind the existing pavement down to where they meet flush together to prevent this.
- Inlay and pulverize in place
All these areas of asphalt maintenance are achieved through the use of a milling machine. During the asphalt milling process in the inlay, it eliminates the existing asphalt, which is commonly the previous overlay. This helps the contractor to put the asphalt back to the pre inlay elevation. Therefore this method of pulverizing in place reduces all asphalt into particles of base rock size and creates room for asphalt profiling.
- Seal Coating
This is an essential part that extends the life of asphalt as because of that it should not be overlooked. The real coat is a mixture of mineral fibres that are emulsified asphalt together with other admixtures.
The purpose of this is sealing the top layer of the asphalt to prevent water from getting into the pavement surface. It also protects the top layer from wear from exposure to sun and oxidation. This is ideally what gives the asphalt its black exterior, and as a result, it should be protected through asphalt profiling.