ultrasonic pulse velocity tester

[robtillaart]

I cannot remember having seen a concrete expert here on the forum..

That said, have you googled "ultrasound sensor for concrete"? (I assume you have access to google)

gave me half a million hits and the first 5 were already really interesting

in some order:

• http://www.inspectioninstruments.net/reference/5highwayndeconference/measurementofconcretethickness.pdf -

• https://www.ideals.illinois.edu/bitstream/handle/2142/5320/NSEL.Report.010.pdf -

• 54 KHz Ultrasonic Transducer Typically used for Concrete. -

• http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=1491739&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D1491739 -

• http://iopscience.iop.org/0964-1726/22/11/115016 -