New GPR equipment from America

Published 22/2 at 16:20

In the yearly PDi feature concerning new ground penetrating radar technology (GPR) for demolition applications, we focus on two new products from the American manufacturer Geophysical Survey Systems, Inc (GSSI). PDi’s editor Mikael Karlsson reports.

GSSI, located in Nashua, New Hampshire, has unveiled its new StructureScan™ Mini LT. This is the latest member of GSSI’s popular all in one concrete inspection GPR system. It possesses all the capabilities of previous versions of the StructureScan Mini, with the new StructureScan Mini LT being more affordable.

Rugged, compact, and flexible, StructureScan Mini LT is ideal for locating rebar, conduits, post tension cables, and voids. It may also help identify structural elements, including pan deck and concrete cover, providing real time determination of concrete slab thickness.  Backed by a two year warranty, these features make StructureScan Mini LT perfect as an entry level concrete inspection system.

The integrated all in one concrete inspection tool comes with an antenna, positioning system, and control unit combination. It features an easy to use interface with six button control options. With its 1.6GHz antenna, the StructureScan Mini LT offers superior target resolution, reaching depths of 500mm. 

Featuring a rugged and compact design, StructureScan Mini LT is IP65 rated to withstand tough jobsite conditions. Users are provided with excellent data visualisation through a high resolution user friendly interface 154mm full colour display, and different operation modes tailored for beginner to advanced use. 

The StructureScan Mini LT enables easy customisation of the data display with a variety of colour adjustments. Real time migrated data, onscreen reference markers and multiple display modes are also available, with other useful features being an ergonomic handle, positioning lasers and 4 wheel drive.

New drill hole feature

GSSI has also announced a new drill hole feature to the StructureScan™ Mini XT – the newest generation of GSSI’s popular all in one concrete inspection GPR systems. The drill hole feature being a 3D data processing detection algorithm. 

The algorithm evaluates a user chosen cylindrical area that represents a potential or planned concrete coring location. Scanning for all potential targets within the cylindrical area, the drill hole feature looks for targets that may interfere with a proposed coring location. 

Available only within the StructureScan Mini XT user interface, it is able in complicated slab situations to utilise a drill hole feature in order to determine the safest location for coring concrete. However, this feature is not a substitute for careful analysis by a trained operator, and GSSI does not recommend that the user depend solely on this algorithm for drill hole interpretation. 

GSSI recommends that operators should receive special training prior to using this new aid. During training, areas may be selected that are believed to be safe for coring while the feature is turned off, and turn the feature on to double check and confirm the initial mark outs. 

The new drill hole feature will work with all StructureScan Mini XT’s already in the field, only requiring a software update. New units will come with this user interface pre-installed. 

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