Hey, my friend! The purpose of this report is to explain "What is 'asphalt overlay'" by answering important questions.
So the fastest answer is…
One or more layers of asphalt construction on an existing pavement.
Asphalt is a bituminous, dark material with a solid structure, being residue from the vacuum distillation of crude oil.
The asphalt pavement is a coating made up of mixtures of aggregates and asphalt binders, composed of four layers: asphalt, responsible for resisting the actions of traffic and its fragmented transmission to the lower layers, waterproofing the pavement and adding characteristics.
The asphalt coating is the last layer of the pavement. It has high adhesive power, impermeability and low chemical reactivity.
Asphalt overlay is a paving method of applying a new layer of asphalt to a deteriorating surface.
Rather than tearing up an old asphalt surface entirely, an asphalt overlay project will use the existing layers as a base for the new asphalt pavement.
An asphalt overlay is a layer of new asphalt applied over the existing base layer of asphalt on a driveway, parking lot or road.
These new layers are generally about 1.5 to 3 inches thick, depending on the demands on the asphalt and the depth of surface asphalt removed.
This is different than a total replacement of the structure, and is typically done when there is only minor to modest damage to the existing pavement structure.
For surfaces with severe damage, milling is required before an overlay can be applied.
The pavement engineer is responsible for the entire asphalt paving project, from those closest to the city, to road projects, from ports to airports.
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