Structural
Integrity Assessment

Air-filled or water-filled voids within the concrete matrix, beneath slabs, or behind walls. Detected as strong high-amplitude GPR reflections. Depth, extent and volume estimated from multi-directional scans.

Horizontal separation planes within concrete slabs or overlay systems — caused by differential thermal movement, corrosion-induced expansion, or poor bonding. C-scans reveal the plan extent of delaminated zones at specified depth.

In-situ compressive strength estimated through combined non-destructive testing. Rebound hammer measures surface hardness whilst UPV measures pulse velocity through the section — the SonReb correlation combines both to produce a reliable strength estimate without coring.

Vertical or inclined crack planes invisible from the surface — caused by overloading, settlement, or shrinkage. GPR diffraction patterns and UT velocity anomalies reveal crack depth and orientation.

Determine location and orientation of rebar and service conduits for cutting, coring & estimating slab load capabilities.

Oxidation of embedded steel causes volumetric expansion, cracking overlying concrete and creating delamination planes. GPR detects the resulting anomalies; confirmed by corrosion probability testing.