ULTRASONIC PULSE VELOCITY METHOD
It is simple and quick test in which pulse velocity is determined passing through concrete.
1. The ultrasonic pulse or waves are generated from pulse generator.
2. These waves transmit through transmitter end into the concrete mass and receive at receiver end as shown in figure.
3. The digital display shows the time required to pass the waves through concrete mass.
4. The pulse velocity is then calculated by dividing path or wavelength by time of travel.
5. The average pulse velocity of wave propagation is calculated by testing concrete at two more locations.
It is simple and quick test in which pulse velocity is determined passing through concrete.
1. The ultrasonic pulse or waves are generated from pulse generator.
2. These waves transmit through transmitter end into the concrete mass and receive at receiver end as shown in figure.
3. The digital display shows the time required to pass the waves through concrete mass.
4. The pulse velocity is then calculated by dividing path or wavelength by time of travel.
5. The average pulse velocity of wave propagation is calculated by testing concrete at two more locations.
Depending on pulse velocity, quality of concrete is decided as follows;
Sr. No.
|
Velocity (Km/s)
|
Quality of concrete
|
Comp. Strength (N/mm2)
|
1
2
3
4
|
4.0 and above
3.5 to 4.0
3.0 to 3.5
3.0 and below
|
Very good
Good
Medium
Poor
|
30-35
25-30
20-25
15-20
|
ultrasonic pulse velocity test is performed on concrete to assess the quality of concrete by passing ultrasonic pulse velocity through it as per IS: 13311 (Part 1) – 1992.
ReplyDeleteThanks sir: ultrasonic pulse velocity test is performed on concrete to assess the quality of concrete by passing ultrasonic pulse velocity through it as per IS: 13311 (Part 1) – 1992.
ReplyDeleteultrasonic machining:Ultrasonic machining is a subtractive assembling process that eliminates material from the outer layer of a section through high recurrence, low adequacy vibrations of an apparatus against the material surface within the sight of fine rough particles.
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