Electric relative density meter method - Database & Sql Blog Articles

Device Name: Electric Relative Density Meter

Equipment Model: JDM-1

Electric Relative Density Meter

Designed for particles smaller than 5mm, especially suitable for non-cohesive soils with particle sizes between 2-5mm.

The sample mass should not exceed 5% of the total soil mass.

This device is used to determine the maximum density and minimum void ratio of soil in order to calculate the relative density.

The instrument complies with the following standards:

Geotechnical Test Procedures SL237-1999

Highway Geotechnical Test Procedures JTJ051-93

Standard

Electric Relative Density Meter Instructions

1. Connect the power supply and turn on the power switch located on the right side of the device.

2. Lift the striker until the fixed pin is inserted into it, ensuring that the striker does not fall. Loosen the locking screws on both sides of the metal container, pull it out, and load the soil sample according to specifications. Push the container back into the positioning plate and tighten the locking screw. Hold the striker with one hand and slowly pull out the fixed pin to lower the striker.

3. Turn on the start switch to enter the standby mode.

4. Adjust the timer to the desired time setting, and the device will begin operation.

5. At the end of the test, follow the procedure outlined in the Geotechnical Test Procedures (SL237-99, Relative Density Test SL237-010-99) to measure the results.

6. After compaction, place the trowel down, loosen the locking screw, and remove the metal container and casing.

7. Clean any remaining soil from the device, turn off the power switch, unplug the device, and cover it with a dust cover.

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