Unless you are in the pavement industry, a lot of thought doesn’t typically go into what’s underneath our roads. However, a solid foundation is going to give you a surface that performs well. One of the most important parts of a road is a well constructed and property designed baselayer. The use of aggregate materials as an unbound base and embankment layers will give your pavement project a solid base for your pavement project.
In recent article from Pavement Interactive, they write, “For asphalt pavements, aggregate bases are important structural components and help distribute load stresses through the full depth of the pavement. In PCC pavements, an aggregate base serves primarily to provide the necessary uniform support conditions for the concrete slabs. Unbound aggregate base layers can be used for drainage purposes, since the fact that they are not bound with asphalt or cement allows water to pass through gaps in the aggregate. In colder climates, aggregate bases also help to insulate the pavement surface from freeze/thaw cycles.”