Re: new asphalt driveway - can see tire tread "marks"
Sprayed liquid asphalt covered with gravel is not the same as hotmix pavement. That's typically called a Macadam surface, also known as successive chip seal or oil mat. It's usually packed down with a roller. Macadam hardens by evaporation of volatile solvents.
Originally Posted by crylakel
Hotmix asphalt pavement is a mix of gravel and asphalt prepared an a factory ("batch plant") and brought to the site in dump trucks. It's jet black. The asphalt is dumped out of the truck directly into a spreading machine, then followed up with a roller to pack it down. Hotmix asphalt hardens by cooling. Some volatile solvents evaporate over time, but the initial hardness is dependent on cooling.
Both surfaces require a base of packed crushed gravel. The base is usually what's known as "three quarter minus" which means that it's a mix of sizes from fines all the way up to 3/4" aggregate.
So knowing that, what did you observe being put down?
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.