A complete map of the pavement structure, to schedule maintenance before defects appear at the surface.
The same technology as for roads, applied to large areas. A GPR antenna array mounted on a vehicle travels over the runway, taxiway or apron in parallel passes, giving a continuous image of the inside of the pavement.
Measurements are positioned to the centimetre by GNSS. Processing provides layer thicknesses, anomaly maps and structure homogeneity indicators, calculated so that zones can be compared with one another.
Maps of layer thickness and interface continuity over the whole inspected surface.
Voids, potentially wet zones and delamination, located and ranked, to define the zones to confirm and treat.
Structural homogeneity map and prioritisation indicator: relative values that allow zones to be compared with one another, not absolute measurements.
Reference practice: ICAO Annex 14 and Doc 9157; ASTM D4748.
Multichannel GPR array mounted on a vehicle, also used for roads.
Runways are measured in tens of thousands of square metres. A multichannel array covers a wide swath on each pass and greatly reduces the time on site compared with a manual GPR.
Precision GNSS receiver that provides a position for each measurement.
It allows the measurement to be repeated at the same place in the next campaign and the real evolution of the structure to be compared.
Equipment selected for our first campaigns, being acquired, rented or provided through partnerships depending on the instrument; availability is confirmed when the order is placed. Characteristics as stated in the manufacturers' data sheets; they depend on configuration and terrain.