Improving Pavement with Intelligent Compaction
Intelligent compaction is the use of rollers equipped with Global Navigation Satellite System, thermal sensing, and/or accelerometer based measurement systems. These technologies allow for real-time monitoring of location, temperature, and stiffness during the compaction process of soils, aggregate bases, or asphalt pavements.
How does it work?
Machine operators utilize a color-coded display that shows the location of the roller, number of roller passes, and optional material stiffness in order to ensure proper coverages are made in an efficient manner to achieve a specified density.
When used for soil or aggregate base compaction, stiffness feedback can identify areas of weak support that need to be addressed before the following layer of material is placed.
In asphalt paving, location monitoring is increasingly useful to ensure full and consistent coverage of the mat, because the majority of paving operations are conducted at night with lower visibility.
The data is stored on a portable storage device or the cloud and can be used for analysis by the contractor or the Oregon Department of Transportation in the Veta software package.
Intelligent Compaction in Action
ODOT is participating in the pooled fund “Enhancement to the Intelligent Construction Data Management System and Implementation,” administered by Minnesota DOT.
The pooled fund project focuses on making improvements to the Veta software that is currently in version 3. Enhancements in analysis platforms, filtering, modeling, correlation analysis, and data management are being addressed in the improvements. Incorporation of other data sets such as ProVAL (pavement smoothness), ground penetrating radar, and delimited text data are also being explored.
As ODOT collects and analyzes more project data, this is an opportunity to have our specific needs heard and addressed. Specifications and contract administration is also being addressed in this study. Having the opportunity to work side-by-side with other agencies that are actively implementing intelligent compaction will provide valuable feedback on related experiences nationwide.