Objective:

To determine the quality of the hardened concrete

Apparatus used:

1. UPV Meter
2. Standard Glass Rod for Calibration
3. Connector Cable with Transducers
4. Concrete Specimen

Working Principle:

The ultrasonic pulse is generated by an electroacoustical transducer. The principle of accessing the quality of concrete depends on the obtained pulse velocity. Higher the velocity defines good quality of concrete. The lower velocity indicates that the quality of the concrete is poor.

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 The UPV machine is calibrated using a standard specimen of known value. In this test, glass rod having a standard value of 40.4 μs is used as a specimen.

Calibrate

40.4 μs

TRIAL 1:   Switch ON the machine. From the given concrete
members, select one concrete member. Place the transducers in correct
position to calculate time in ‘μs’.

Concrete Members

C

R

Test

V

TRIAL 2:   Switch ON the machine. From the given concrete
members, select one concrete member. Place the transducers in correct
position to calculate time in ‘μs’.

Concrete Members

C

R

Test

V