- 0489 306 160
- admin@gpstructural.com.au
- Adelaide, South Australia
GP Structural Services specialises in the non-destructive testing (NDT) of concrete structures, providing engineers, asset owners, and contractors with accurate subsurface information without intrusive demolition. Our investigations are commonly undertaken to verify construction details, assist structural assessments, locate embedded reinforcement or services, and identify potential internal defects within reinforced concrete elements.
Our primary investigation method utilises Ground Penetrating Radar (GPR) to assess slabs, beams, walls, and footings, allowing for the detection of reinforcement, post-tensioning tendons, conduits, slab interfaces, and potential anomalies such as voids or delamination.
Where required, additional NDT techniques including corrosion mapping, ultrasonic testing, and impact-based testing are used to further assess structural condition, thickness, and continuity.
These investigation methods are widely applied across commercial buildings, infrastructure, industrial facilities, and forensic structural assessments, providing critical information required for engineering analysis, remediation planning, and asset management.
Our investigations allow engineers and contractors to understand what exists inside concrete structures — including reinforcement, tendons, voids, discontinuities, and potential corrosion — without destructive demolition.
The Hilti PS1000 and Leica IDS C-Thru Ground Penetrating Radar (GPR) scanners are advanced concrete inspection systems used to locate and map subsurface features within reinforced concrete structures without causing damage. By transmitting high-frequency radar signals into the concrete and analysing the reflected responses, these systems can detect reinforcement, conduits, post-tension cables, and embedded services, while also assisting in identifying potential defects such as voids, delamination, or other subsurface discontinuities.
At GP Structural Services, these scanners are used to perform detailed grid-scan investigations that generate high-resolution subsurface images of concrete elements. This enables our team to accurately interpret reinforcement layouts, assess slab thickness, and locate critical structural components, helping clients minimise risk, avoid costly damage, and make informed decisions before drilling, cutting, or modifying structural elements.
The Hilti PS300 Ferroscan is a specialised reinforcement detection system used to accurately locate and map steel reinforcement within concrete structures. Unlike radar-based scanners, the PS300 uses electromagnetic technology to detect the presence, spacing, and depth of reinforcing steel bars (rebar) embedded within concrete.
At GP Structural Services, the PS300 is used to complement our GPR investigations by providing highly accurate mapping of reinforcement layouts within slabs, beams, and walls. This allows our team to confirm bar spacing, estimate cover depths, and identify congested reinforcement zones, helping clients avoid damaging structural steel during drilling, coring, or modification works while improving confidence in structural assessments.
Schmidt Hammer Testing is a non-destructive method used to estimate the surface hardness and indicative compressive strength of concrete. The test involves a spring-loaded hammer that impacts the concrete surface and measures the rebound of the mass, which correlates to the relative strength and uniformity of the material.
At GP Structural Services, Schmidt Hammer testing is used as a rapid field assessment tool to evaluate concrete condition and consistency across structural elements such as slabs, beams, and columns. When used alongside other Non-Destructive Testing (NDT) methods, it helps provide valuable insight into concrete quality, identify potential areas of weakness, and support engineering assessments without damaging the structure.
The Pundit PD8050 is an advanced ultrasonic pulse echo testing system used to assess the internal condition of concrete structures. By transmitting low-frequency ultrasonic waves into the concrete and analysing the reflected signals, the device can detect internal features such as voids, delamination, honeycombing, and thickness variations.
At GP Structural Services, the PD8050 is used to perform high-resolution subsurface investigations where deeper concrete assessment is required. The system is capable of generating detailed ultrasonic tomographic images, allowing our team to evaluate structural integrity and identify hidden defects within slabs, walls, and structural elements—without causing any damage to the asset.
Schmidt Hammer Testing is a non-destructive method used to estimate the surface hardness and indicative compressive strength of concrete. The test involves a spring-loaded hammer that impacts the concrete surface and measures the rebound of the mass, which correlates to the relative strength and uniformity of the material.
At GP Structural Services, Schmidt Hammer testing is used as a rapid field assessment tool to evaluate concrete condition and consistency across structural elements such as slabs, beams, and columns. When used alongside other Non-Destructive Testing (NDT) methods, it helps provide valuable insight into concrete quality, identify potential areas of weakness, and support engineering assessments without damaging the structure.
The Pundit PD8050 is an advanced ultrasonic pulse echo testing system used to assess the internal condition of concrete structures. By transmitting low-frequency ultrasonic waves into the concrete and analysing the reflected signals, the device can detect internal features such as voids, delamination, honeycombing, and thickness variations.
At GP Structural Services, the PD8050 is used to perform high-resolution subsurface investigations where deeper concrete assessment is required. The system is capable of generating detailed ultrasonic tomographic images, allowing our team to evaluate structural integrity and identify hidden defects within slabs, walls, and structural elements—without causing any damage to the asset.
The corromap system is an advanced half-cell corrosion testing technology used to assess the likelihood of reinforcement corrosion within reinforced concrete structures. By measuring electrical potential differences between embedded steel reinforcement and a reference electrode placed on the concrete surface, the system can identify areas where corrosion activity may be occurring beneath the concrete cover.
At GP Structural Services, corromap testing is used to produce detailed corrosion potential maps across concrete elements such as slabs, beams, and bridge decks. This allows our team to identify areas of elevated corrosion risk, assess the durability of reinforced concrete structures, and help clients plan targeted remediation works. By accurately mapping corrosion activity before visible deterioration occurs, corromap investigations support proactive maintenance strategies and help minimise costly structural repairs.
The Proceq Impact Echo system is a specialised non-destructive testing method used to evaluate the internal condition of concrete structures. By generating a small mechanical impact on the concrete surface and analysing the reflected stress waves, the system can determine structural characteristics such as slab thickness and identify internal defects including voids, delamination, honeycombing, and areas of poor consolidation.
At GP Structural Services, Impact Echo testing is used to investigate the internal integrity of concrete elements such as slabs, beams, and foundations where hidden defects may be present. The technology allows our team to detect subsurface anomalies without intrusive works, providing valuable information about structural condition and helping clients plan targeted investigations, remediation, or repair strategies with greater confidence.
