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Los Angeles grinder

This method is used to determine the Los Angeles abrasion value of coarse aggregate to evaluate the aggregate's resistance to crushing.

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Highway aggregate testing instrument series

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Structure

The main components of this machine include a cylinder, shelves, a sealing cover, a gearbox, a motor, and a counter.

Main Technical Parameters
1. Inner diameter of cylinder X inner diameter: 711±5 mm x 508±5 mm
2. Wall thickness: 12 mm ± 0.5 mm, charging port: 150 mm ± 3 mm
3. Partition: (Size 89 mm ± 2 mm, thickness 25 mm ± 1 mm)
4. Motor power: 1.5 KW
5. Speed: 30~33 r/min
Revolution counter automatically records (automatic display, displays the number of cylinder rotations)

Steel balls: Medium 45.6 mm - Medium 47.6 mm, weight 390~445 g

External dimensions: 1130 × 750 × 1050 mm (length × width × height)

Weight: 300 kg

Operating voltage: 380V 50Hz

Instructions for Use

1. Before the test run, check whether the circuit is intact. Press the start button to check if the drum rotates normally (in the direction of the arrow on the drum. If the rotation direction is reversed, change the two hot wires in the 380V input). At the same time, reset the LED display, then set the preset DIP switch to the number of tests, and press the start button to start working. In case of special circumstances, press the "pause" button, the machine stops working. After troubleshooting, press the "pause" button again, and the machine resumes operation.

2. Load the test aggregate and steel balls into the drum, seal the cover tightly, tighten the screws, and start the instrument. After 500 rotations, it will stop automatically. At this time, the discharge port is in the upper middle position, making it easy to open the sealing cover. After opening the cover, press the momentary button to turn the discharge port downwards, release the button, stop the drum, and remove the test piece.

3. Use a 2 mm diameter round hole sieve or a 1.7 mm side length square hole sieve to sieve out the stone chips from the sample, rinse the aggregate remaining on the sieve with water, dry it to a constant weight, and accurately weigh it.

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Los Angeles grinder

This method is used to determine the Los Angeles abrasion value of coarse aggregate to evaluate the aggregate's resistance to crushing.

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Highway aggregate testing instrument series

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