GSSI releases ‘PaveScan RDM 2.0’ asphalt density assessment tool

Published 29/6 at 16:32

Geophysical Survey Systems, Inc. is a leader in the development, manufacture and sale of ground penetrating radar (GPR) equipment, primarily for the concrete inspection, utility mapping and locating, road and bridge deck evaluation, geophysics, and archaeology markets.

Its equipment is used all over the world to explore the subsurface of the earth and to inspect infrastructure systems non-destructively. The company has now announced the release of PaveScan RDM 2.0 which is an innovative asphalt density assessment tool that provides accurate real time measurements to ensure pavement life and quality. 

GSSI unveiled PaveScan RDM 2.0 for the U.S. and Canada at the Transportation Research Board 2020 conference in January. PaveScan 2.0 incorporates a new sensor design built specifically for the extremes of the asphalt paving environment and foldable deployment arms with high visibility for work site safety. It is ideal for uncovering problems that occur during the paving process, including poor uniformity and significant variations in density. By avoiding these problems, it helps avoid such premature failures as road ravelling, cracking, and deterioration along joints. 

The system automatically measures the dielectric value to identify anomalies in real time. In addition, the dielectric values can be used to as a means to correlate percent voids and density in new pavement, with the innovative technology enabling users to obtain critical density data for QA/QC of new pavements. Unlike other options, such as nuclear density gauges or radioactive alternatives, PaveScan does not result in any site hazards or require closing off work areas.

Seamlessly integrating with GPS systems, PaveScan features a flexible, modular design that facilitates easy and efficient operation and data collection. It is offered as a single sensor or a three sensor cart based configuration. As of April 2019, this pavement density measurement technology is an accepted American Association of State and Highway Transportation Officials (AASHTO) specification, PP 98-19.

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