Has anybody seen ceramic floor tiles lifting off suddenly and got a good explaination for it?
The tiles are (were) directly mortared to a reinforced concrete slab. The lifting of tiles occured suddenly and created quite some noise. Apparently, the tile floor was under lateral stress and the...
We are currently sounding concrete with a swiss-made ultrasonic instrument call TICO. Literature says that the pulse velocity for indirect or surface transmissio is 5 to 20% lower than the velocity of direct transmission.
In our tests we find the pulse velocity of indirect transmission 50 to...
