Standard: ASTM D5731
Point Load Tester
A Point Load Tester is used to measure the strength values of a rock specimen or concrete in geotechnical engineering. It applies a concentrated force to a small area of the material and measures the resulting deformation or failure load. This type of testing can provide valuable information about the load-bearing capacity of rock formations or concrete structures, which is crucial for engineering projects such as building foundations, tunnels, and bridges. New rigid design load frame with hydraulic loading ram actuated by hand pump. A ruler attached to the frame allows for direct measuring of specimen diameter. The apparatus applied a high-accuracy load cell and digital fine-resolution reading control unit. This point load tester handles for easy portability, the case comes with a fully closed set-up compartment for the storage of parts.
Features of Point Load Tester
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Hydraulic Loading Ram: It is equipped with a hydraulic loading ram actuated by a hand pump, providing a controlled application of force to the specimen.
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Direct Measurement: A ruler or other measuring device attached to the frame allows for direct measurement of the specimen diameter, which is important for calculating stress values accurately.
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High-Accuracy Load Cell: The apparatus is equipped with a high-accuracy load cell that measures the force applied to the specimen with precision.
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Digital Control Unit: It features a digital control unit with fine-resolution reading capabilities, providing accurate measurement and control of the applied force.
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Portability: Some models are designed for easy portability, allowing for convenient transportation to different testing locations.
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Storage Compartment: The case typically comes with a fully closed setup compartment for the storage of parts, ensuring organization and protection during transportation and storage.
Technical Specifications
| Model Number |
NL 1012 X / 008 |
| Max. Capacity |
50 kN x 0.01 kN Sensitivity |
| Max. Specimen Test |
110 mm Dia. |
| Power |
1.8 Ah Rechargeable with AC 220 V |
| Result Storage |
999 Test Results |
| Accuracy & Repeatability |
≤1.0 % F.S |
| Case Dimension (mm) |
280(L) x 220(W) x 680(H) mm |
| Approx. Weight |
40 kg |
Unit Consist Of:
| Model Number |
Parts Description |
| NL 1012 X / 008 – P 003 |
Measuring Guide Plate |
| NL 1012 X / 008 – P 006 |
Conical Cone Set (Top & Bottom) |
| NL 1012 X / 008 - P 007 |
Safety Cover |
| NL 1012 X / 008 - P 008 |
Power Charger |
| NL CSNR |
45 - 52 C Spanner |
*1 Copy of Manual Instruction
Standard
ASTM D5731 is an ASTM International standard that provides guidelines for testing the determination of the point load strength index of rock and application to rock strength classifications.
Test Procedure of Point Load Tester
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Preparation of Specimen: The rock or concrete specimen to be tested is prepared by cutting or drilling to obtain a flat surface. The specimen is usually cylindrical in shape with a specified diameter.
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Setting Up the Tester: The point load tester is set up on a stable surface. The hydraulic loading ram is connected to the frame, and the digital control unit is turned on.
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Placing the Specimen: The prepared specimen is placed on the lower anvil of the point load tester. Care is taken to ensure that the specimen is positioned centrally and securely on the anvil.
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Applying Load: The hydraulic loading ram is then used to apply a concentrated force to the specimen at a specified rate. The force is applied until the specimen fractures or deforms, and the maximum load applied is recorded.
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Measuring Deformation or Failure Load: During the test, the deformation or failure load of the specimen is measured using the digital control unit. This measurement is crucial for determining the strength characteristics of the material.
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Recording Results: The maximum load applied and any relevant data, such as specimen diameter and deformation, are recorded for analysis.
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Analysis: The results of the test are analyzed to determine the point load strength index (Is(50)), which is a measure of the material's strength under point loading conditions.
Product Video
How to Operate Point Load Tester
