Here is a simple dictionary type definition: IC refers to
the compaction of road materials, such as soils, aggregate
bases, or asphalt pavement materials, using modern vi-
bratory rollers equipped with an integrated measurement
system, an onboard computer reporting system, Global
Positioning System (GPS) based mapping, and optional
feedback control. IC rollers facilitate real-time compaction
monitoring and timely adjustments to the compaction
process by integrating measurement, documentation, and
control systems. IC rollers also maintain a continuous re-
cord of color-coded plots, allowing the user to view plots
of the precise location of the roller, the number of roller
passes, and material stiffness measurements.
“Operators have told me that intelligent compaction
takes the guessing game out of their rolling pattern,” said
Daniel F. Brown, president of Phend & Brown, Inc., Mil-
ford, Ind. “They no longer need to remember which util-
ity power pole or mailbox they started or stopped at with
their rolling pattern. Additionally, uniform pass coverage is
assured because pass coverage is being measured and doc-
umented.”
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Back in 2011 the FHA reported on a major three-year
research project which was designed to verify that IC,
which at the time had been considered “emerging tech-
nology,” was mature enough to be implemented in the real
world. The intent of the project was to create the blueprint
in the FHWA IC strategic plan. This study was under the
Transportation Pooled Fund project, which included 12
participating state department of transportation: Georgia,
Indiana, Kansas, Maryland, Minnesota, Mississippi, New
York, North Dakota, Pennsylvania, Texas, Virginia, and
Wisconsin.
The report’s Executive Summary states that the project
“demonstrated tried-and-true Intelligent Compaction
(IC) technologies through sixteen (16) field projects and
open house activities, numerous meetings and training for
State personnel and local earthwork/paving contractors,
and assistance on the development of State IC specifica-
tions.”
The IC project’s key conclusions:
• IC mapping of existing support layers is effective in iden-
tifying weak support areas for corrective actions prior to
the compaction of the upper layers.
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January 2020