Concrete Inspection and NDT
Concrete Inspection and NDT
Concrete Inspection: Locate Rebar
Concrete and construction professionals use ground penetrating radar to safely locate structural reinforcement within poured concrete prior to drilling, cutting or coring. Take advantage of locating targets in real time, with only single-sided access required. Potential targets can be located easily and quickly in real time with GSSI’s StructureScan series.
This data is a 2D data set showing rebar at a depth of 1.5 inches and 12 inches on center. The red dots are generated by a target marking feature on the StructureScan Mini XT.
Concrete Inspection: Locate and Trace Conduits
Ground penetrating radar can detect what lies beneath the surface before cutting or coring concrete. GSSI’s StructureScan Mini XT combined with LineTrac XT can safely identify power conduits, thereby avoiding costly or dangerous hits.
This data image shows a powered electrical conduit at 5 cm depth. This data was collected with the StructureScan Mini XT and LineTrac XT accessory.
Concrete Inspection: Establish Location and Depth of Post-Tension Cables
Ground penetrating radar helps concrete professionals and contractors find the location and depth of post-tension cables. The StructureScan series helps to identify the characteristics of the survey area, such as where the cables drape, for added safety.
This 3D data set was taken at GSSI’s test slab and simulates post-tension (PT) cables. This data image was taken with the SIR 4000 and 1600 MHz antenna.
Concrete NDT: Detect the Thickness of a Concrete Slab
GSSI’s StructureScan systems help to determine the thickness of suspended or on-grade concrete slabs. Advanced techniques like cross-polarizing the antenna can greatly help enhance the back-side reflection of concrete slabs.
This 2D data set was collected with a SIR 3000 and 1600 MHz antenna. The data set shows a well-defined bottom of suspended concrete slab.
Concrete NDT: Detect Voids in a Concrete
Concrete professionals and engineers that are interested in detecting the presence of voids that can impact the structural stability of a concrete slab or structure. Ground penetrating radar helps to indicate the presence of voids and honeycombing in concrete structures.
This data image shows a large void beneath a concrete roadway. Data set was collected with a 900 MHz antenna.
Concrete NDT: Assess Concrete Condition
Engineers and concrete professionals use concrete cover information to determine if reinforcement bars are protected from environmental effects, and to identify areas in which the cover is non-compliant.
This data illustrates a concrete deck that shows clear deteriorated concrete caused by chemical weathering around rebar.