Once the HMA mixture is placed it is essential that it be compacted to some desired density. If the density is too low the mixture will be permeable to air and water and durability will be an issue.

Checklists can be obtained by emailing Lisa Cody. Please specify which checklist you would like to receive in your email. Find information on American Association of State Highway and Transportation ...

A trio of 4,000-vpm, high-frequency vibratory rollers, the SW800, SW850 and SW900 can make density quickly on SuperPave and other HMA mixes. Double-drum widths range from 67-, 79-, and 84-inch ...

Once the HMA mixture is placed it is essential that it be compacted to some desired density. If the density is too low the mixture will be permeable to air and water and durability will be an issue.