Documents Background:

Background: Hot mix asphalt (HMA) is a mixture of aggregate and asphalt binder. The asphalt is a petroleum based substance and, since the oil embargo of the 1970’s, efforts…

Documents Background:

Background: Hot mix asphalt (HMA) is a mixture of aggregate and asphalt binder. The asphalt is a petroleum based substance and, since the oil embargo of the 1970’s, efforts…