|FHWA > Engineering > Pavements > Intelligent Compaction > FHWA Asphalt Intelligent Compaction Demonstration|
Printable version (.pdf, 0.2 mb)
FHWA Asphalt Intelligent Compaction Demonstration
What is Intelligent Compaction (IC)
Intelligent Compaction (IC) is an equipment-based technology for better quality control that results in longer pavement lives. IC machines are vibratory rollers with accelerometers mounted on the axle of drums, global positioning system, infra-red temperature sensors (for asphalt), and on-board computers that can display color-coded maps in real-time to track roller passes, asphalt surface temperatures, and stiffness of compacted materials.
Who We Are
The FHWA has been leading a national effort to advance the IC technology through numerous projects since 2008 to improve compaction quality of materials that include granular soils, cohesive soils, stabilized base, and asphalt pavements. To further accelerate the implementation of IC, FHWA is conducting IC research to further investigate the correlation between IC and in-place asphalt densities.
Asphalt IC Field Projects Wanted
The FHWA IC research team is seeking eight (8) asphalt projects in 2012 and 2013 for this study. The requirements for the projects are two (2) lifts, 1 mile or more asphalt construction as extensive coring would be conducted at the base course (further details on page 2). The steps for an IC demonstration are:
If you are interested in participating in this study and providing candidate asphalt projects, please contact:
IC Project Requirements
The requirements of the IC demonstration projects include:
Recommended IC Systems
All systems must be equipped with RTK GPS, accelerometer-based measurement systems, infra-red temperature sensors, and an on-board computer display system. The IC data outputs should also be compatible with the Veda IC software. The recommended double-drum IC systems include but not limit to the following (in order of trade names): Bomag, HAMM/Wirtgen, and Sakai.
The activities during the demonstration consist of:
Depending the actual progress, the coring may be conducted for the Day 3 section instead. Along with IC and field point measurements during breakdown rolling, other compactions (asphalt densities after screed, intermediate rolling, and finish rolling) will be monitored during construction in order to relate the majority of factors to the core densities
Who are welcome to participate
Recommended Double-drum IC Systems
More information is available at: www.fhwa.dot.gov/pavement/ic
PDF files can be viewed with the Acrobat® Reader®