Abrasion Test
Middle East University
Course: Strength of materials (Laboratory)
Course No. 0902234
Experiment Name: Abrasion Test by Los Angeles Machine
Date: 11-Mar-2014
Abdullah Al-Saleh
Due Date: 18-Mar-2014
INTRODUCTION
The machine is used for testing crushed slag, crushed and uncrushed gravel for resistance to abrasion. The aim of the test is to find the percentage wear due to the relative rubbing action between the aggregates and steel balls as abrasive charge. The oven-dried arrangements are weighted and rotated along with abrasive charge in the machine for the 500 revolutions and percentage of wear so found out it’s reported as Los Angeles abrasion value.
APPARATUS
1. Los Angeles Abrasion Testing Machine
2. Balance: a balance having a capacity of at least 5500 g sensitive to 0.1 g or less.
3. Sieves: No. 4 and No. 12 woven wire sieves conforming to AASHTO M 92. These sieves should be at least 12 in. in diameter.
PROCEDURE
1. Place the test specimen and abrasive charge in the Los Angeles Abrasive Testing Machine and close the opening with the dust-tight cover.
2. Start the testing machine and allow to operate for the required number of revolutions.
3. When the testing machine has completed rotating the required number of revolutions, remove the cover and carefully empty the entire contents into a pan. Remove the abrasive charge from the pan.
4. Separate the test specimen on the 4.75-mm sieve, and then sieve the passing 4.75-mm material on the 1.70-mm sieve. Combine the material retained on the 4.75 and 1.70-mm sieves. Weigh and record these values to the nearest 1 g.
Middle East University
Course: Strength of materials (Laboratory)
Course No. 0902234
Experiment Name: Abrasion Test by Los Angeles Machine
Date: 11-Mar-2014
Abdullah Al-Saleh
Due Date: 18-Mar-2014
INTRODUCTION
The machine is used for testing crushed slag, crushed and uncrushed gravel for resistance to abrasion. The aim of the test is to
Course: Strength of materials (Laboratory)
Course No. 0902234
Experiment Name: Abrasion Test by Los Angeles Machine
Date: 11-Mar-2014
Abdullah Al-Saleh
Due Date: 18-Mar-2014
INTRODUCTION
The machine is used for testing crushed slag, crushed and uncrushed gravel for resistance to abrasion. The aim of the test is to find the percentage wear due to the relative rubbing action between the aggregates and steel balls as abrasive charge. The oven-dried arrangements are weighted and rotated along with abrasive charge in the machine for the 500 revolutions and percentage of wear so found out it’s reported as Los Angeles abrasion value.
APPARATUS
1. Los Angeles Abrasion Testing Machine
2. Balance: a balance having a capacity of at least 5500 g sensitive to 0.1 g or less.
3. Sieves: No. 4 and No. 12 woven wire sieves conforming to AASHTO M 92. These sieves should be at least 12 in. in diameter.
PROCEDURE
1. Place the test specimen and abrasive charge in the Los Angeles Abrasive Testing Machine and close the opening with the dust-tight cover.
2. Start the testing machine and allow to operate for the required number of revolutions.
3. When the testing machine has completed rotating the required number of revolutions, remove the cover and carefully empty the entire contents into a pan. Remove the abrasive charge from the pan.
4. Separate the test specimen on the 4.75-mm sieve, and then sieve the passing 4.75-mm material on the 1.70-mm sieve. Combine the material retained on the 4.75 and 1.70-mm sieves. Weigh and record these values to the nearest 1 g.
Middle East University
Course: Strength of materials (Laboratory)
Course No. 0902234
Experiment Name: Abrasion Test by Los Angeles Machine
Date: 11-Mar-2014
Abdullah Al-Saleh
Due Date: 18-Mar-2014
INTRODUCTION
The machine is used for testing crushed slag, crushed and uncrushed gravel for resistance to abrasion. The aim of the test is to