Product
RSM-PRT(R) Low Strain Pile Integrity Tester
Efficient and convenient collection, clear and accurate signals
Classification:
Sinorock's independently developed high stability equipment. Easy to operate and highly adaptable, it can meet various low strain detection needs, and the data is authentic and reliable.
Cotnact：
Introduction
The RSM-PRT(R) pile low-strain detection instrument is a new low-strain detection device independently developed and designed by Sinorock. It features an exquisite design, user-friendly interface, simple operation, and is suitable for various conventional low-strain testing standards. It exhibits strong adaptability to the testing environment, high equipment stability, and provides reliable and genuine data.
Application
Low strain pile integrity testing by reflected wave method
Applicable standards
Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations ASTM D5882-16
Core advantages
Accurate signal
Strong and weak signal acquisition without distortion;
3D correction function for shallow defect and the defect can be located accurately.
Onsite Analysis
On-site analysis can realize exponential magnification adjustment and starting position adjustment;
The defect location can be calculated, identified and corrected to 0.01m.
Industrial-grade capacitive screen
Newly upgraded industrial-grade capacitive touch screen, smooth and precise operation, adapt to strong light environment.
Large Capacity Ultra-thin Battery
9mm ultra-thin large-capacity battery, battery life ≥10h and removable.Can be equipped with a backup battery.
Newly upgraded
Engineered plastic ABS+PC.Flame retardant material, high temperature resistant design;
IP65 Dustproof and waterproof design, fearless of the extreme.
Technical Parameter
|
Display method |
8.4-inch true-color LCD |
|
screen Resolution |
800×600 (adjustable backlight) |
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Operation mode |
Capacitive touch |
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Storage capacity |
16G electronic hard disk |
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Signal acquisition method |
Wired |
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Data export method |
USB |
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Master control system |
Low power embedded system Basic frequency≥1GHz Memory: 512M |
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Sampling interval |
5～1000μs |
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Floating point magnification |
1～256 |
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Recording length |
1 k |
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A/D conversion accuracy |
24-bit instantaneous floating point |
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System noise voltage |
＜20μV |
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Dynamic range |
≥100 dB |
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Trigger level |
Four-level selectable |
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Number of channels |
1 |
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Sensor |
Piezoelectric accelerometer and speedometer |
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Sensor bandwidth |
0.5～9000 Hz |
|
Operating mode |
Single speed /Transient frequency response mode |
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Frequency bandwidth |
2～12000 Hz |
|
Protection level |
IP65 |
|
Power supply mode |
Removable lithium battery battery capacity：12000mAh Battery thickness：9mm Battery life：≥10h |
|
Shell |
Engineering Plastic ABS+PC |
|
Operating temperature |
-20～+55℃ |
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Dimensions |
265×200×56 mm |
|
Weight |
2.0 kg (including lithium battery) |
FAQs
Q
Q4: If there is no clear signal from the pile toe, how should the pile toe be evaluated?
+
A
A: The absence of a distinct toe reflection can be attributed to several factors:
1.Insufficient excitation energy – A heavier hammer should be used to increase impact energy and new data should be collected. Evaluation should follow relevant standards and consider the geological conditions comprehensively.
2. Influence of pile defects – When two or more significant defects exist in the pile shaft, reflections from the pile toe are often not observed.
3. Impedance matching at the pile toe – If the impedance of the bearing stratum is close to that of the pile and the end contact is well bonded, the toe reflection may be absent. However, any shaft defects can still be detected.In some specific cases, the absence of a toe reflection is considered normal, such as:
● Extra-long piles in soft soil areas with high length-to-diameter ratios
● Strong lateral soil confinement causing rapid stress wave attenuation
● Good impedance matching between the pile shaft and the bearing stratum
● Significant cross-sectional impedance changes or gradual variation along the pile
● Joint gaps in precast pile segments impacting wave transmission
Q
Q3: When the waveform quality is poor and the first arrival wave is difficult to identify, is it correct to determine the first wave position using two sensors at different heights?
+
A
A: There are generally two possible reasons for this issue:
Defects within the pile itself.
Improper testing procedures, such as excessive lifting speed or the sensor striking the sonic logging tube.
When such problems occur, it is recommended to verify the issue on-site and perform re-sampling to identify the root cause, in order to avoid potential misinterpretation of the test results.
Defects within the pile itself.
Improper testing procedures, such as excessive lifting speed or the sensor striking the sonic logging tube.
When such problems occur, it is recommended to verify the issue on-site and perform re-sampling to identify the root cause, in order to avoid potential misinterpretation of the test results.
Q
Q2: What are the possible reasons for weak or no signal response at the pile toe in low strain testing? If caused by improper operation, how can it be avoided?
+
A
A:Insufficient impact energy – The hammer may be too light; use a heavier hammer to ensure adequate excitation.Excessive pile length – The pile may exceed the effective testing range of the low strain method.Severe or multiple defects in the pile shaft – Excessive energy loss due to defects can result in no signal from the pile toe.Impedance matching at the pile toe – When the bearing stratum impedance is close to that of the pile and bonding is good, reflections from the pile toe may not be detectable; however, any defects along the shaft can still be identified.
Operational recommendations:
Ensure proper preparation of the pile head, select an appropriate hammer with suitable weight and material, and apply clean, decisive impacts during testing.
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Keyword:
RSM-PRT(R) Low Strain Pile Integrity Tester
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