Aggregate Abrasion Value

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This test helps to determine the abrasion value of coarse aggregates as per IS: 2386 (Part IV) – 1963.
The apparatus used in this test are Los Angles abrasion testing machine, IS Sieve of size – 1.7mm, Abrasive charge – 12 nos. cast iron or steel spheres approximately 48mm dia. and each weighing between 390 and 445g ensuring that the total weight of charge is 5000 +25g and Oven.

Sample Preparation
The test sample should consist of clean aggregates which has been dried in an oven at 105 to 110oC to a substantially constant weight and should conform to one of the gradings shown in the table below:


Procedure to determine Aggregate Abrasion Value
The test sample and the abrasive charge should be placed in the Los Angles abrasion testing machine and the machine rotated at a speed of 20 to 33 revolutions/minute for 1000 revolutions. At the completion of the test, the material should be discharged and sieved through 1.70mm IS Sieve.


Reporting of Results
i) The material coarser than 1.70mm IS Sieve should be washed, dried in an oven at a temperature of 100 to 110oC to a constant weight and weighed (Weight ‘B’).


ii) The proportion of loss between weight ‘A’ and weight ‘B’ of the test sample should be expressed as a percentage of the original weight of the test sample. This value should be reported as,
Aggregate abrasion value = (A-B)/B x 100%.

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  • bhupendra paras August 12, 2009 at 5:16 pm

    can you provide range of crushing value,impact value,abrasion value of standard aggregates.

  • saurabh singh September 3, 2009 at 1:53 am

    very useful information.

  • Dickson K. Gidion December 11, 2009 at 1:29 am

    Please help some procedures to follow in abration tes according to British Standards
    I am a student studying at Mbeya Institute of science and Technology
    in Tanzania

  • zie85 December 11, 2009 at 9:24 pm

    can you provide the specification refer to BS code range of
    crushing value, impact value & abrasion value for concreting process

  • Eric November 5, 2010 at 5:04 am

    Can you rank the tests in their order of importance and cite your reason for saying so?

    • naeem niazi May 9, 2012 at 1:17 am

      according to AASHTO 90 LAAV for base course should be less than 40% and for sub base course it should be less than 50%.

  • Tehraga December 19, 2010 at 1:40 pm

    what is range of acceptable percentage of abration for aggregate that use for ready mix concrete

  • sudish June 14, 2011 at 2:02 am

    can u provide me the acceptance criteria for the aggregate crushing, impact, abrassion test.please

  • nikhil December 5, 2011 at 10:56 am

    why 40 ton is applied for determining crushing value of coarse aggregates. Why not 50 or some other value

  • par December 31, 2011 at 2:27 am

    why is 1.7mm sieve used in LAA?

  • Ayan Das April 12, 2012 at 3:25 pm

    thanks yaar…

  • neethu July 28, 2012 at 12:11 pm

    good…. it was so helpful thanks……

  • AMOL NANAVARE April 9, 2014 at 3:41 am

    thanks yar……..

  • bhupendra kumar swami June 24, 2014 at 11:32 pm

    That’s really helpful to do the test in laboratories,thanks cep

  • ericco killian anselmus March 21, 2017 at 4:47 am

    why does the sample need to be dried and washed before and after the test?

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