Stabilized Gravel
Stabilized gravel is a clay and stone mixture which compacts to form a hard impermeable surface for constructing driveways, parking areas and roadways. It is the brownish material under and next to most roadways in southern Michigan. It is used to build new driveways, parking lots and roads and also used to repair existing ones which have not been paved.
When using stabilized gravel remove all topsoil and unstable subsoil before installation. A minimum of 4” should be used to create a good quality stable long-term surface which can handle vehicular traffic. Construction and repairs are best done when the ground has stabilized following the winter freeze thaw cycle.
There are many grades of stabilized gravel. Some of the stabilized has more stone in it which ends up looking a little more surfaced once the material has settled and been rained on a few times. Stabilized gravel with higher sand sized mineral component will not pack as well as a good clay based one.
The Stabilized sample picture is not representative of the material when taking the picture the material is on the hand and the stones took over the picture. It has a much higher clay material content than what appears there.