ULTRASONIC PULSE TESTING OF CONCRETE
Objective:
To Determine the Quality and the Dynamic Modulus of Elasticity of the Concrete Specimen using Ultrasonic Pulse Velocity method as per IS-516.
Apparatus used:
Transmitting Transducer, Receiving Transducer, Electronic Timing Device, Standard Calibration Bar, Carborundum Stone, Grease
Electronic Timing Device
Calibration Bar
Carborundum Stone
Grease
TransmittingTransducer Receiving Transducer
Step 1: a). Click on Add Button to Add Electronic Timing Device
Step 1: b). Click on Add Button to Apply greese and the calibration bar.
Step 1: c). Click on Electronic Timing Device for Zoom View
Step 1: d). Click on Start Button on Electronic Timing Device to Power On it.
Step 1: e). Click on Stop Button on Electronic Timing Device to Power Off it.
Note: Transit time displayed on the device should be same as mentioned on the calibration bar, otherwise calibrate the device.
Transit Time = 25.4 µs
Select the Moisture Condition of Concrete.
Select the type of Transducer Arrangement.
DIRECT TRANSMISSION [ ]
Step 2: a). Click on Add button to add a Marker and to mark the points on the specimens.
Step 2: b). Click on Marker for Mark Point A & Point B on the Wall.
Step 2: c). Again Click on Marker for Mark Point B on the Wall.
Step 2: c). Measure the path length.
DIRECT TRANSMISSION [ ]
Step 3: a). Click on Add button to Add Carborundum Stone.
Step 3: b). Click on Carborundum Stone for Removing Plaster or other Coating from the Marked Points.
Step 3: c). Click on Add button to Add Grease Box.
Step 3: d). Click on Brush for Greasing Marked Points.
Step 3: e). Again click on Brush for Greasing Marked Points.
DIRECT TRANSMISSION [ ]
Step 4: a). Click on Electronic Timing Device to Place the Transducer on the point A marked on the Wall.
Step 4: b). Click on Electronic Timing Device for Zoom View.
Step 4: c). Click on Start Button on Electronic Timing Device to Power On it.
Step 4: d). Click on Stop Button on Electronic Timing Device to Power Off it.
DIRECT TRANSMISSION [ ]
Step 5: a). Record the Path Length(L) of the Pulse= Width of the Wall.
b). Record the Time of Pulse Transmission for Three Times.
| Point |
Transmit time of the pulse(T), Micro-Second |
Path length(L)(mm) | Pulse velocity(V) (Km/s)=L/T |
| A | 107.3 | 0.302 | 2.82 |
| B | - | - | - |
| Average Time = | 2.82 | ||
DIRECT TRANSMISSION [ ]
Step 6: a). Click on Electronic Timing Device to Place the Transducer on the point B marked on the Wall.
Step 6: b). Click on Electronic Timing Device for Zoom View.
Step 6: c). Click on Enter Button on Electronic Timing Device to Power On it.
Step 6: d). Click on Stop Button on Electronic Timing Device to Power Off it.
DIRECT TRANSMISSION [ ]
Step 7: a). Record the Path Length(L) of the Pulse= Width of the Wall.
b). Record the Time of Pulse Transmission for Three Times.
| Point |
Transmit time of the pulse(T), Micro-Second |
Path length(L)(mm) | Pulse velocity(V) (Km/s)=L/T |
| A | 107.3 | 0.302 | 2.82 |
| B | 106.4 | 0.295 | 2.77 |
| Average Time = | 2.80 | ||
DIRECT TRANSMISSION [ ]
Observations: Calculate the average velocity
| Point |
Transmit time of the pulse(T), Micro-Second |
Path length(L)(mm) | Pulse velocity(V) (Km/s)=L/T |
| A | 107.3 | 0.302 | 2.82 |
| B | 106.4 | 0.295 | 2.77 |
| Average Velocity | 2.80 | ||
DIRECT TRANSMISSION [ ]
Results
| Sr.No. | Average Value of Pulse Velocity(V) | Concrete Quality Grading |
| 1 | 2.80 | N/A |
| 2 | 2.81 | N/A |
| Sr.No. | Path length(L)(mm) | Average transmit time of the pulse(T), Micro-Second | Pulse velocity(V) (Km/s)=L/T | Quality of Concrete | Dynamic Modulus of elasticity(E) (Kg/m/s2) |
| 1 | 0.302 | 107.3 | 2.82 | N/A | 16192.76 |
| 2 | 0.295 | 106.4 | 2.77 | N/A | 15623.63 |
DIRECT TRANSMISSION [ ]
Report
| Set | Pulse velocity(V) (Km/s)=L/T | Quality of concrete | Dynamic Modulus of elasticity(E) (Kg/m/s2) |
| A | 2.82 | N/A | 16192.76 |
| B | 2.77 | N/A | 15623.63 |
SEMI-DIRECT TRANSMISSION [ ]
Step 3: a). Click on Add button to add Marker.
Step 3: b). Click on Marker for Mark Points on the Wall.
Step 3: c).Again Click on Marker for Mark Point B on the Wall.
A
B
SEMI-DIRECT TRANSMISSION [ ]
Step 4: a). Click on Add button to Add Carborundum Stone.
Step 4: b). Click on Carborundum Stone for Removing Plaster or other Coating from the Marked Points.
Step 4: c). Click on Add button to Add Grease Box.
Step 4: d). Click on Brush for Greasing the Marked Points.
Step 4: e). Again click on Brush for Greasing the Marked Points.
SEMI-DIRECT TRANSMISSION [ ]
Step 4: a). Click on Electronic Timing Device to Place the Transducer on the point A marked on the Wall.
Step 4: b). Click on Electronic Timing Device for Zoom View.
Step 4: c). Click on Start Button on Electronic Timing Device to Power On it.
Step 4: d). Click on Stop Button on Electronic Timing Device to Power Off it.
SEMI-DIRECT TRANSMISSION [ ]
Step 5: a). Record the Path Length(L) of the Pulse= Width of the Wall.
b). Record the Time of Pulse Transmission for Three Times.
| Point |
Transmit time of the pulse(T), Micro-Second |
Path length(L)(mm) | Pulse velocity(V) (Km/s)=L/T |
| A | 107.3 | 0.302 | 2.82 |
| B | - | - | - |
| Average Time = | 2.82 | ||
SEMI-DIRECT TRANSMISSION [ ]
Step 6: a). Click on Electronic Timing Device to Place the Transducer on the point A marked on the Wall.
Step 6: b). Click on Electronic Timing Device for Zoom View.
Step 6: c). Click on Start Button on Electronic Timing Device to Power On it.
Step 6: d). Click on Stop Button on Electronic Timing Device to Power Off it.
SEMI-DIRECT TRANSMISSION [ ]
Step 7: a). Record the Path Length(L) of the Pulse= Width of the Wall.
b). Record the Time of Pulse Transmission for Three Times.
| Point |
Transmit time of the pulse(T), Micro-Second |
Path length(L)(mm) | Pulse velocity(V) (Km/s)=L/T |
| A | 107.3 | 0.302 | 2.82 |
| B | 106.4 | 0.295 | 2.77 |
| Average Time = | 2.80 | ||
SEMI-DIRECT TRANSMISSION [ ]
Observations: Calculate the average velocity
| Point |
Transmit time of the pulse(T), Micro-Second |
Path length(L)(mm) | Pulse velocity(V) (Km/s)=L/T |
| A | 107.3 | 0.302 | 2.82 |
| B | 106.4 | 0.295 | 2.77 |
| Average Velocity | 2.80 | ||
SEMI-DIRECT TRANSMISSION [ ]
Results
| Sr.No. | Average Value of Pulse Velocity(V) | Concrete Quality Grading |
| 1 | 2.80 | N/A |
| 2 | 2.81 | N/A |
| Sr.No. | Path length(L)(mm) | Average transmit time of the pulse(T), Micro-Second | Pulse velocity(V) (Km/s)=L/T | Quality of Concrete | Dynamic Modulus of elasticity(E) (Kg/m/s2) |
| 1 | 0.302 | 107.3 | 2.82 | N/A | 16192.76 |
| 2 | 0.295 | 106.4 | 2.77 | N/A | 15623.63 |
SEMI-DIRECT TRANSMISSION [ ]
Report
| Set | Pulse velocity(V) (Km/s)=L/T | Quality of concrete | Dynamic Modulus of elasticity(E) (Kg/m/s2) |
| A | 2.82 | N/A | 16192.76 |
| B | 2.77 | N/A | 15623.63 |
IN-DIRECT TRANSMISSION [ ]
Step 3: a). Click on Add button to add Marker.
Step 3: b). Click on Marker for Mark Points on the Wall.
A
B
C
D
E
IN-DIRECT TRANSMISSION [ ]
Step 3: a). Click on Add button to Add Carborundum Stone.
Step 3: b). Click on Carborundum Stone for Removing Plaster or other Coating from the Marked Points.
Step 3: c). Click on Add button to Add Grease Box.
Step 3: d). Click on Brush for Greasing the Marked Points.
IN-DIRECT TRANSMISSION [ ]
Step 4: a). Click on Eletronic Timing Device to Place Transducer on Point A and Place Receiver at Point B.
Step 4: b). Click on Electronic Timing Device for Zoom View.
Step 4: c). Click on Start Button on Electronic Timing Device to Power On it.
Step 4: d). Click on Stop Button on Electronic Timing Device to Power Off it.
IN-DIRECT TRANSMISSION [ ]
Step 5: a). Record the Time(T) of Pulse Transmission for Different Distance Between the Transducer
(Place the Transmitter at a Place the Receiver at C, then D and E).
|
Transmit time of the pulse(T), Micro-Second |
Distance between Transducers(mm) |
| N/A | N/A |
| N/A | N/A |
| N/A | N/A |
| N/A | N/A |
IN-DIRECT TRANSMISSION [ ]
Observations
|
Transmit time of the pulse(T), Micro-Second |
Distance between Transducers(mm) |
| N/A | N/A |
| N/A | N/A |
| N/A | N/A |
| N/A | N/A |
IN-DIRECT TRANSMISSION [ ]
Step 6: a). Plot the Graph (Best Fit Line) Between Pulse Transmit Time and the Distance
Between the Transducers.
IN-DIRECT TRANSMISSION [ ]
Results
| Sr.No. | Average Value of Pulse Velocity(V) | Concrete Quality Grading |
| 1 | 2.80 | N/A |
| 2 | 2.81 | N/A |
| Sr.No. | Path length(L)(mm) | Average transmit time of the pulse(T), Micro-Second | Pulse velocity(V) (Km/s)=L/T | Quality of Concrete | Dynamic Modulus of elasticity(E) (Kg/m/s2) |
| 1 | 0.302 | 107.3 | 2.82 | N/A | 16192.76 |
| 2 | 0.295 | 106.4 | 2.77 | N/A | 15623.63 |
IN-DIRECT TRANSMISSION [ ]
Report
| Set | Pulse velocity(V) (Km/s)=L/T | Quality of concrete | Dynamic Modulus of elasticity(E) (Kg/m/s2) |
| A | 2.82 | N/A | 16192.76 |
| B | 2.77 | N/A | 15623.63 |