CHUM Tomography case study

Case History 4: Tomography

This 17.6m (58ft) deep slurry wall element was cast in place and installed with three steel tubes.

The contractor use polymer slurry from unknown source...

A diagonal defect at a depth of -5m to -6m between access tubes 2 and 3 was correctly detected using  CHUM.

The image below is a B&W fuzzy-logic tomography. It takes just a few additional minutes to log this data compared to one-dimensional CSL.

Logged results

Excavated wall