Hot mix asphalt material for paving is usually a mixture of graded. High quality different sizes of aggregates which are heated and mixed with liquid bitumen in measured quantities to produce hot mix asphalt. Asphalt is a paving material made out of crushed rocks and bitumen.

Apart from the relative amounts and types of aggregate and recycled asphalt pavement used to produce hot mix asphalt, characteristics of hot mix asphalt is determined by the amount and grade of bitumen used while making the asphalt.