Two applications, one solution.
Applications:
2-in-1 probe for testing piles and concrete plates / Quick past-fail evaluation of concrete piles / Pile length assessment / Mapping of concrete plate thickness / Detection of internal defects such as voids or delaminations / Asset inspection (buildings, bridges, piles)
Rapidly check the quality of installed piles using low strain technology. Verify the length of the pile and identify any major defects for further investigation at the earliest possible stage to avoid costly repairs at a later date.
Perform a fast revision of your assets using impact echo technology. Verify the thickness of a concrete wall or slab and detect internal defects such as voids or delaminations.
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Continuous software service, maintenance and bug fixes. Compatibility upgrades to fully support the latest generation iPads and the latest version of iOS to enhance your productivity.
Top new capabilities introduced with the new upgrade:
1. Recommendation: The newest models enhance performance, number of sensors and optional capabilities. 2, 3. Depending on iPad model
Coupling putty for pile integrity testing 1kg (34900011) Measurement accessory
Impactor 7.5 mm diameter measurement accessory (34900013)
Impactor 10 mm diameter measurment accessory (34900014)
Impactor 15 mm diameter measurment accessory (34900015)
Chest harness kit for hands free operation of all iPad app based instruments: GP8000, GP8100, GP8800, PD8050, PM8000, PI8000
Can also be used as an iPad stand
Fully adjustable to accommodate any size of iPad up to 12.9”
Standards
Guidelines
The maximum depth that can be tested using Pile Integrity Test depends on many factors, and it is normally linked to the slenderness ratio L/D.
Preferred slenderness ratio L/D for pile integrity is around 30, but in...
Preferred slenderness ratio L/D for pile integrity is around 30, but in some cases this ratio may exceed 30 (hard soils), even reaching 60 (very soft soils).
However, this ratio can be sometimes lower and sometimes higher than 30, as pile integrity check depends a lot on several factors:
Also, the type and size of the hammer to be used is important. For very long piles, we recommend to use a bigger hammer than the one we offer in our kit.
The accuracy of the measured length with a Pile Integrity Test (PIT) device depends on the wave velocity selected for the specific type of pile being tested, which represents the speed at which stress waves travel through...
The accuracy of the measured length with a Pile Integrity Test (PIT) device depends on the wave velocity selected for the specific type of pile being tested, which represents the speed at which stress waves travel through the pile. Different piles have different wave velocities, and accuracy can be affected by various factors, such as soil conditions. Thus, it's crucial to use an appropriate wave velocity and account for uncertainties in the measurement. The accuracy of the measurement can be improved by performing multiple tests at different locations along the pile and using advanced signal processing techniques to analyze the data.
An engineer can determine the wave speed within an accuracy of 10% based on concrete strength, and if a pile with known length has a clear reflection from the toe, the wave velocity can be calculated with precision and being used in the rest of the piles.
If the toe reflection signal is clearly visible, the reading should match the real length of the pile. For that purpose, calibration of the speed wave / velocity is required. Then the velocity will be changed to make the...
If the toe reflection signal is clearly visible, the reading should match the real length of the pile. For that purpose, calibration of the speed wave / velocity is required. Then the velocity will be changed to make the measured length to match with the expected length of the pile.
Testing piles with existing decks or pile caps is not recommended with Pile Integrity Method. You should always lower your expectations as in most of the cases results will not...
Testing piles with existing decks or pile caps is not recommended with Pile Integrity Method. You should always lower your expectations as in most of the cases results will not be accurate.
To do this kind of test in concrete piles with a deck / pile cap is the following:
However, the best method to check deep foundations once the superstructure has been built is the Parallel Seismic Method.
In all cases you need to calibrate the wave velocity. If you do not know the expected length, you can always play with an approximate wave velocity of 3.500m/s to 4.500m/s.
For these types of cases, you will use an...
For these types of cases, you will use an approximate value of the wave velocity. It will be easy to find defects by using the comparison mode and comparing the graphics of different piles. However, the location of the defect, and the total length of the pile, will be always an approximate value of the reality.
On the other side, the wave velocity can be calibrated using other apparatus, like pundit 200 using cross section wave velocity measurement.
The maximum thickness that can be tested using Impact Echo depends on many factors, but it is normally related to the quality of the concrete and the selected impactor.
Normally, the backwall is clearly visible in...
Normally, the backwall is clearly visible in structures up to 60cm, but in some cases, we can extend this value up to 80cm. Note that Impact Echo is meant for plate-like structures (minimum length > 6 * thickness): walls, slabs, etc. And it does not always provide readable results for slender elements such as columns or beams.
That depends on the size of the element to be tested. The bigger the impactor, the lower the frequency it creates. Low frequency waves are able to travel further, however its resolution is poorer so they are not as good as...
That depends on the size of the element to be tested. The bigger the impactor, the lower the frequency it creates. Low frequency waves are able to travel further, however its resolution is poorer so they are not as good as to identify small defects. On the other side, the smaller the impactor, the bigger the frequency it creates. High frequency waves do not travel deep, but they have much better resolution, which is useful for detecting small defects.
If you want to find the backwall of a thick element, you should use the red hammer. If you want to identify small defects in superficial areas, you should use the blue impactor.
Recalibration of the apparatus is not required. ASTM does not specify a period for PIT or IE recalibration. Sensor calibrations are no relevant unless both force and acceleration are measured, which is not the case.
Only...
Only calibration of the wave velocity is needed each time you start inspection a new structure.
With a normal amount of reinforcement there should not be any problem, as air and voids signal reflection is way bigger than the reflection from the reinforcement.
Do as many impacts as possible per spot.
Try to be careful while testing: cleaning the surface is really important, coupling the signal is a key aspect, applying constant pressure on the sensor, applying constant force on...
Try to be careful while testing: cleaning the surface is really important, coupling the signal is a key aspect, applying constant pressure on the sensor, applying constant force on the hammer, vertically aligning the sensor on the concrete surface, etc.
Then try to calibrate the wave velocity and revise if you are getting good signal. If that is not the case, find another alternative spot in the same pile / wall and repeat the testing until you receive good signal.
If you have a clear signal, data processing will be really easy as you can always use the high and low pass filters to eliminate the signal noise, and also the time gain compensation to increase the signal amplitude.
High and low pass filters are a very useful feature to eliminate the signal noise and to allow the user to better understand the signal.
Proceq is now part of Screening Eagle Technologies. Screening Eagle is a merger of Dreamlab, a Singapore-based software and robotics company and Proceq, a Swiss-based NDT company with a 65+ year heritage as a market leader in portable sensors. Together, we protect the built world with software, sensors and data.
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