Abrasion Test by Los Angeles Abrasion Testing Machine | Abrasion Test on Road Aggregates
This video shows how to conduct Abrasion Test on Road Aggregates by Los Angeles Abrasion Testing Machine, abrasion values for different types of pavements is also given in the video
Due to the movements of traffic, the road stones used in the surfacing course are subjected to wearing action at the top. Resistance to wear or hardness is hence an essential property for road aggregates, especially when used in wearing course. Thus road stone should be hard enough to resist the abrasion due to the traffic. When fast moving traffic fitted with pneumatic tyres move on the road, the soil particles present between the wheel and the road surface causes abrasion on the road stone. Hence in order to test the suitability of road stones to resist the abrading action due to traffic, tests are carried out in the laboratory.
Abrasion test on aggregates are generally carried out by any one of the following methods.
1) Los Angeles abrasion Test
2) Deval Abrasion test
3) Dorry abrasion test
Of these tests, Los Angeles Abrasion Test is more commonly adopted as the test values of aggregates have been correlated with performance of studies. The IS Standards has suggested that wherever possible, Los Angeles Test Should Be Preferred.
APPARATUS REQUIRED are as follows.
1) Los Angeles abrasion Test
2) Weighing scale
3) IS Sieve 1.7 mm
4) Course aggregates
PROCEDURE:
1) Take Clean and dry aggregates weighing 5 Kgs is taken as test specimen and placed in the cylinder
2) The cover is then fixed dust tight.
3) The machine is rotated at a speed of 30 to 33 revolutions per minute. And rotated for 500 revolutions. The machine should be balanced and driven in such a way as to maintain uniform peripheral speed.
4) After the desired number of revolutions, the machine is stopped and the material is discharged from the machine taking care to take out entirestone dust.
5) Using a sieve of size larger than 1.7 mm the material is first separated into two parts and the finer is taken out and sieved further on a 1.7 mm sieve
6) The portion of material coarser than 1.7mm size is weighed correct to one gram.
I Sincerely thank my students Mohammed Sameer, Manjunath Pujari and Guruprasad Gondi for their assistance.
Big thanks to my Institution KLS Shri Vasantrao Potdar Polytechnic for permitting to carry out this experiment
#abrasiontestonaggregates #losangelesabrasiontestingmachine #abrasion
Пікірлер: 92
Very educative,thank you.
It was really helpful for our lab internals thank u so much sir
Sir Pa jeet, you are amazing
thank you sir.
Sir I salute your way of teaching methodology you are so great man and lastly I agian salute from Pakistan.
@structuralanalysisanddesign
3 жыл бұрын
Thank you so much Usman, we happy our videos helpful to you, all the best, keep watching and kindly checkout channel membership feature
Fantastic sir,... Keep up the great work. Best of luck!
@structuralanalysisanddesign
2 жыл бұрын
Thanks a lot! I am happy my content helped you, all the best, keep watching and sharing
Good sir and thanks for help us
Thank you sir!
@structuralanalysisanddesign
2 жыл бұрын
You are welcome!
Thank you so much sir.
@structuralanalysisanddesign
4 жыл бұрын
Most welcome and all the best
I AM IMPRESSED WATCHING THIS VIDEO
@structuralanalysisanddesign
3 жыл бұрын
Thank you, keep watching and keep sharing
It's nice tq so much
Tq sir ,we required this type of explaination good to see sir.
@structuralanalysisanddesign
3 жыл бұрын
You're most welcome, we are happy this video helped you, keep watching and supporting, all the best
perfect👍
Thank you so so much sir❤❤❤ Really helpful
@structuralanalysisanddesign
9 ай бұрын
Always welcome, its really feels nice to help through videos, keep watching and sharing
Thank you sir
@structuralanalysisanddesign
3 жыл бұрын
Welcome, All the best, keep watching
Very helpful
@structuralanalysisanddesign
3 жыл бұрын
Thank you, keep watching
Fantastic explanation sir 👍🏻🙏
@structuralanalysisanddesign
2 жыл бұрын
Thank you so much, all the best
Thanks a lot ❤️❤️❤️
@structuralanalysisanddesign
3 жыл бұрын
Always welcome, all the best
Tq sirr
best explaination sir
@structuralanalysisanddesign
3 жыл бұрын
Thanks for liking, keep watching and sharing, all the best
Outstanding explain sir 💕 I think other branches students are easily understood when they watch the video Once more love you sir 💕💕💕💕
4.75 mm sieve is used for both coarse and fine seiving
Love from Bangladesh
Nice one sir 💯💯💯💯💯🔥
@structuralanalysisanddesign
4 жыл бұрын
Thank you
Thankyou sir 😁 ... Thankyou so much 🙏
@structuralanalysisanddesign
2 жыл бұрын
Most welcome 😊keep watching, all the best
Superb
@structuralanalysisanddesign
2 жыл бұрын
Thank you! Cheers! All the best
Very nice sir
@structuralanalysisanddesign
3 жыл бұрын
Thanks and welcome, keep watching for more civil engineering related videos
4.75mm sieve
Sample A and B have LA abrasion values 15 and 30 respectively which sample is harder?
@rickyrickalvous2982
2 жыл бұрын
Sample A
4.75 mm Sieve used to determine fine to course aggregate
4.75 mm sieve
gud presentated
@structuralanalysisanddesign
2 жыл бұрын
Thank you, keep watching
@sharathbs4215
2 жыл бұрын
@@structuralanalysisanddesign please make PWD JE classes Syllabus wise
Seie No.4
💖💖
4.75mm
2:38 why the test is taking didn’t hear clearly ?
Coarse aggregate in 12.5 mm Fine aggregate 2.36
Sir it's my request to do more videos on structures as soon as possible
@structuralanalysisanddesign
4 жыл бұрын
Which specific topic you want Vamshi??
@vamshikrishna2981
4 жыл бұрын
Design of water tanks
@structuralanalysisanddesign
4 жыл бұрын
i will try to do it as soon as possible
Answer is 4.75 mm IS sieve
4,75
4.75
10mm and 4.75mm
Sir tell us abhout size of aggregrates used in this test
@structuralanalysisanddesign
4 жыл бұрын
There are different set of size of aggregates but for this test which i have shown random aggregates were taken for demonstration
Why didn't you Sieve the material on the individual sieves 19 mm 12.5mm 9.5mm try ASTM standard ok
4.75 mm
Sr hindi me nhi bana sakte h
4.75mm IS sieve
Why those 12 steel ball charges are used here?
@structuralanalysisanddesign
3 жыл бұрын
To create friction between aggregates
4:16 What?
Why los Angeles abrasion test is known as los Angeles
1.7 mm sieve
Sr hindi me banaya kijit
@structuralanalysisanddesign
3 жыл бұрын
Jald hi Hindi channel shuru karne wala hu
Explain in Hindi
4.75mm sieve
4.75 mm sieve
4.75
4.75mm
4.75 mm
4.75 mm sieve
4.75 mm sieve
4.75 mm sieve
4.75
4.75 mm
4.75 mm
4.75
@immukhan7242
3 жыл бұрын
What is that