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How is Asphalt Maintenance Done? When it comes to asphalt maintenance, there are four important aspects to consider. When water penetrates into the asphalt base, then this is the primary cause of the failure of asphalt. Asphalt gets brittle and dry in the course of time, and when this happens the material wears away and begins to crack which then allows water to seep into the base of the pavement. The base material will then move and settle when water seeps into the cracks. There will be a grid-like cracking on the surface when the base materials move and settle. When the pavement begins to crack then there are only two options to take, and these are either to replace the old asphalt or patch repair it. When doing patch repair, you only consider isolated areas of the pavement. You remove a potion of the pavement using a backhoe and saw-cutting. Grinding machines can also be used for this purpose. When the old asphalt is removed, it is then replaced with new asphalt. The removal method determines the amount that is removed. You should remove asphalt to a depth of 1.5 times the original thickness of the asphalt. You should replace the base sock so that it matches the adjacent areas to allow for a uniform base support. The amount of removal should be extended a foot past the area that failed. The maintenance method using asphalt overly is one that is affordable and provides a new wearing surface. If you are going to do an asphalt overlay you should consider certain important factors. The maximum overlay thickness should be 2.5 inches and the minimum is 1.5 inches. If you are going to grind down the existing pavement, do not do it on the overlay section to match the existing structure. If you do this you would weaken the overlay strength. To prevent this they need to grind the existing pavement down to where they meet flush together.
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Inlay and pulverize in place are also areas of asphalt maintenance. You should use a milling machine to do these tasks. A depth of existing asphalt is removed during the inlay process. You should do it at a depth which is deeper than a previous overlay. Then asphalt is put back to the pre-inlay elevation. When the method of pulverize in place is used, the asphalt will be pulverized to as small as base rock sized particles.
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Seal coating is an important part of extending the life of asphalt and it should not be overlooked. Mineral fibers, emulsified asphalt, water, and other admixtures are combines to make up the seal coating. This will seal the top layer of the asphalt to prevent water from penetrating the pavement surface and protecting the top layer from wear from sun exposure and oxidation. The even black coating asphalt comes from this seal coating.