Method of using coarse aggregate abrasion testing machine

Los Angeles abrasion testing machineMeets the experimental requirements of T0323-2005 Coarse Aggregate Wear Test (Daorui Test) in JTGE42-2005 "Code for Testing of Aggregates in Highway Engineering".

This machine is mainly used to measure the wear rate of stone materials.
Los Angeles abrasion testing machineMain technical parameters:
1. Cylinder inner diameter and length: 710 ± 5mm × 510 ± 5mm
2. Speed 30-33 revolutions per minute
3. Counter: 5-digit
4. Dimensions: 1320 × 980 × 1050mmLos Angeles abrasion testing machine
5. Steel ball:? 12 pieces of 48mm
6. Voltage: 380, 220 (three-phase four wire system)
7. Host power: 2.2KW 2800 RPM
Los Angeles abrasion testing machineUsage:
1. Before the experiment, it is necessary to check whether the circuit is intact and manually rotate the drum normally (in the direction of the front of the drum rotation). At the same time, adjust the counter to zero.
2. Load the trial crushed stones and steel balls into the cylinder, seal the cover, tighten the screws, start the instrument and rotate it for 500 revolutions before stopping, and take out the sample
3. Use a 2mm diameter circular hole sieve with a 2.6mm side length square hole sieve. Sift out the stone chips from the sample, rinse the remaining crushed stones with water, dry and weigh them accurately.
Calculation method for digital Los Angeles shelf wear tester:
1. Calculate the stone wear rate accurately to 0.1% as follows
Q=（G1-G2）/G1*
Explanation: Q - Wear rate of stone materialLos Angeles abrasion testing machine
G1- Original weight of crushed stones loaded into the cylinder, g
G2- Weight after washing and drying after the experiment, g
2. The test result is the average of two experiments, with an error of no more than 2%, otherwise a new experiment is required.
Digital Los Angeles Shelf Wear Testing Machine with Machine Accessories: 1. Instruction Manual. 2. 12 steel balls.