All
- All
- Product Management
- News and Information
- Introduction content
- Enterprise outlets
- Frequently Asked Questions
- Corporate Video
- Company Portfolio
Adjustment and Operating Procedures and Precautions for the Asphalt Penetration Tester
2020-03-16
The penetration tester for asphalt is primarily used to determine the penetration of viscous petroleum asphalt, viscous shale asphalt, liquid petroleum asphalt, and the residue remaining after distillation or emulsification of asphalt materials. The penetration of asphalt is defined as the depth to which a standard needle of specified weight penetrates vertically into the sample under predetermined time and temperature conditions.
I. Instrument Adjustment for the Asphalt Penetration Tester
1. After unpacking, check whether any damage has occurred during transportation.
2. Check against the packing list to ensure that no parts are missing.
3. Plug in the power supply and turn it on. At this point, the display screen will show the instrument’s name and then enter the test interface.
4. To ensure detection accuracy, after powering on for 15 seconds, press the instrument’s button. At this point, the needle rod assembly should be able to fall freely.
5. To adjust the instrument to a horizontal level, follow these steps: Rotate the adjusting foot screws until the bubble in the spirit level is centered. At this point, the working surface will be perfectly horizontal.
II. Operating Procedures for the Asphalt Penetration Tester
1. Power on: Turn on the power switch and adjust the constant-temperature bath temperature to 25℃ by heating or cooling with cold water.
2. Place the sample into a constant-temperature water bath and keep it there for at least 1 to 1.5 hours.
3. Attach the test needle, loosen the set screw at the back of the lifting frame, and move the lifting frame up and down to the appropriate position before tightening the screw. Then, use the fine-tuning handwheels on both sides to slowly lower the needle linkage until the needle tip just touches the surface of the specimen.
4. Lower the probe rod until it contacts the needle linkage, then press the “Zero” button.
5. Set the time selection switch to 5s, press the “Start” button, and after 5 seconds, the needle linkage will be locked. Gently place the measuring rod in contact with the needle linkage and read the needle penetration data.
III. Precautions for Using the Asphalt Penetration Tester
1. When using the probe to measure depth, press and lift gently—never strike it rapidly.
2. When rethreading the needle bar, press the release button instead of pulling it out while the needle bar is locked. This will help prevent wear on both the needle bar and the bar sleeve.
3. After each test is completed, the probe should be removed, lubricated for protection, and then placed back into its protective sleeve.
Relevant Information
The main advantages of the penetration tester are:
The main advantages of the penetration tester are:
2023-11-02
The working principle of the compaction apparatus mainly includes the following points:
The working principle of the compaction apparatus mainly includes the following points:
2023-10-23
The compaction instrument is a device used to measure the bearing capacity of bored pile foundations. Its main features are as follows:
2023-10-13