On 10/03/2020 13:45, Andy Bennet wrote:
On 10/03/2020 13:38, Bert Coules wrote:
Is there a way of establishing the structure and integrity of a block
wall without removing the covering plaster?Â* X-rays?Â* Some other techy
wizardry?

Thanks.

An IR camera works - different thermal characteristics of the morter v
the blocks.

+1

Also discovered (by accident) that many years back. I was in the main
lab at GEC Sensors playing around with a steerable thermal imaging
turret, and noticed a wall obviously built with large blocks, but could
not seem to see the same wall with the naked eye. To the naked eye it
had a smooth plastered finish!





--
Cheers,

John.

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