Talking About Asphalt

Asphalt is a mix design of different aggregates(stone,sand etc.) and Asphalt cement or asphalt liquid plus some manufactures use RAP (recycling asphalt).In an asphalt plant the aggregates will be dry by a burner and added to the mixing drum with the asphalt liquid and the RAP.The difference on mixes are the use for them . Base mixes normally has 1/2'' stone or bigger and mixes for the surface are made with 1/2 '' stone or smaller.For a small job as a Driveway is recommended 2'' inches or more in top of a processed gravel base or a course base asphalt mix minimum of 2''.If you are going to pave asphalt in top of existing asphalt you will need a primer or tack coat to better results.