Many miles of the Texas road network have reached or have exceeded
their design lives. SELECTING THE COST-effective REHABILITATION AND/or
maintenance alternative continues to be a challenge. For major designs
TXDOT RELIES HEAVILY ON THE USE OF ADVANCED NON-DESTRUCTIVE TESTING
TOOLS TO ASSIST IN IDENTIFYING THE ROOT CAUSE OF PAVEMENT
DETERIORATION AND IN SELECTING THE OPTIMAL REPAIR STRATEGY.This
seminar will describe the tools that were developed in the TxDOT
research program and are now used on a daily basis around Texas. These
include Ground Penetrating Radar, Falling Weight Deflectometers and a
Rolling Dynamic Deflectometer. The use of these tools in evaluating
and designing Full Depth Reclamation projects, conducting failure
investigations and in generating 10 year rehabilitation priorities for
important highway corridors will be demonstrated in a series of case
studies.
Mr. Tom Scullion is a Regents Fellow and the manager of the Flexible
Pavement Program at the Texas A&M University’s Transportation
Institute (TTI) and is a registered professional engineer in the state
of Texas. He has been involved with pavement research for over 40
years and his current interests are in the areas of pavement design,
high performance thin overlays, non-destructive testing, full depth
reclamation and soil stabilization. His list of sponsors includes
state agencies, municipalities, counties, private consultants, and
contractors.
Mr. Scullion is an expert in using nondestructive testing to identify
defects in engineering structures. He routinely uses both Falling
Weight Deflectometers (FWD) to measure structural strength and Ground
Penetrating Radar (GPR) to identify and locate subsurface defects. Mr.
Scullion supervised the development of GPR interpretation software and
provides training for the Texas Department of Transportation (TxDOT)
on where and how to use this technology. He has developed and
regularly teaches training programs for TxDOT on pavement design, FWD
analysis, Rubblization, Full Depth Reclamation, thin overlay design
and construction.
He routinely conducts forensic evaluations of pavements showing
premature deterioration and is currently active in developing 10-year
rehabilitation plans for major Interstate corridors in Texas. He
played a lead role in the development and implementation of the
MODULUS 7 backcalculation program, which is widely used around the
world for processing FWD data. He also was the lead developer of
TxDOT’s Flexible Pavement Design program (FPS 21), which is the
recommended design system for all flexible pavements in Texas.
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01/02/2020 Last update