Asphalt pavements are flexible pavements as opposed to concrete pavements which we call rigid pavements. Asphalt pavements are only as sturdy as the underlying base and subgrade. We need to construct asphalt pavements understanding that the asphalt is a part of a system which makes up a sturdy driveway section. Subgrade moisture conditioning and compaction, a crushed aggregate base course of a recommended thickness between 4 to 8 inches and a minimum of 2 inches and up to 4 inches of compacted hot mix asphalt will typically compose the section system.
5 QUESTIONSthat should be asked of your paving contractor:
That depends upon the existing conditions that we can assess by visual cues. We can provide expert opinions from our very capable and tenured estimators along with options as needed to help you decide.
In a number of cases, yes, you can, but we have to keep in mind that any existing cracks in the pavement will, over time, reflect through the new pavement. We can also include Geotextile reinforcing fabric to slow the reflecting of existing cracks in the new overlay. The surrounding terrain must also be accepting of the overlay to not destroy the existing drainage patterns.
We certainly hope not. We pride ourselves in communicating to you through our contract what is covered and what is not covered in the scope of work. We will explain to you what conditions could be a cause for extra costs. Conditions such as overly saturated existing subgrades or unforeseen conditions beneath the surface can be a cause for remediation. We would only do extra work with your express written consent.
It depends on the intended use, traffic counts and the ultimate section design. We believe that a new pavement should be designed to last 20 to 30 years. We feel a meaningful life extending restoration should last 10 to 20 years. Sometimes a customer may just want to refresh the looks with a sealcoat or thin overlay so it may be attractive for a sale but not last 5 years. The important question is how should we design or restore the pavement. Should the surface be asphalt concrete or should it be Portland cement concrete? What is the base section thickness?, the depth and density of subgrade? Overlay versus Inlay? Reinforcing Fabrics and what type? We can help you hire a geotechnical engineer to make a design or we can give you an opinion based on our many years of experience in building varied pavement section solutions.