The Spectral Analysis of Surface Waves (SASW) method is used on structural elements to estimate crack and damage depths and to measure relative concrete quality.
- One-sided testing
- Applicable for defects perpendicular to the tested surface (cracks, joints, repair edges)
- Applicable on any material
SASW can be used to:
- Determine crack tip, fire damage and freeze-thaw damage depths
- Provide thickness profiling of pavements including asphalt and layered systems
- Compare concrete areas to locate zones of weak or degraded concrete
NOTE: SASW measurements are accurate to within 5% for the determination of the thickness and stiffness of the top layer in a pavement system.
Pavement system profiles including the surface layer, base and subgrade materials
Surface opening crack depths
Freeze-thaw damage depth measurement
Fire damage depth measurement
Abutment depths of bridges
Condition assessments of concrete liners in tunnels, and other structural concrete conditions