Civil
Faculty member David Timm and graduate student Kendra
Peters-Davis recently published a report entitled “Recalibration
of the Asphalt Layer Coefficient," which establishes that today’s
asphalt layer designs are structurally stronger than layers
used during the American Association of State Highway and
Transportation Officials (AASHTO) Road Tests of 1958-1960. Their
test track study recalibrating the structural coefficient of asphalt
layers is allowing the Alabama Department of Transportation to
decrease its hot-mix asphalt pavement thickness by nearly 19
percent and enabling the DOT to meet structural requirements
with no loss in structural integrity. The Alabama DOT has
implemented the new pavement program in its 2010 budget,
stretching the state’s resurfacing budget farther than last year
to pave more roads, lanes and miles, which translates to almost
$20 million a year in savings.
- Auburn University Samuel Ginn College of Engineering
- Auburn, AL 36849
- Phone: 334-844-2308