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What is Hot Mix Asphalt?
It's an engineered mixture of aggregate,
or stones and sand, with liquid asphalt
cement, a petroleum product. Varying
sizes of aggregates are heated, then
mixed, in exact proportions, with asphalt
cement that has been liquified at about
300°. While the mixture is still
hot, it is delivered to your driveway
and paved on top of a base or subgrade
that has already been prepared. Soon
after paving, the mixture cools and
hardens allowing you to drive on it
right away. |