Aggregate crushing value test discussion

discussion on aggregate impact value test - YouTube. May 27, 2014 ... aggregate crushing value test discussion - Crusher South Africa. aggregate impact

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Feb 08, 2012 The aggregate impact value (AIV) is B AIV = 100 (%) . . . (1) ARESULTSAn average is taken of the two tests and the result is recorded to the nearestwhole number as the Aggregate Impact Value.The AIV is normally about 105 per cent of the Aggregate Crushing Value and itcan be used for the same purpose. For weak aggregates, the required load

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Aggregate impact value test discussion Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Aggregate impact value test discussion, quarry, aggregate, and

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Aggregate impact and crushing test - SlideShare 8 Feb 2012 ... These crushing tests can reveal aggregate properties subject to ...PROCEDURE - Aggregate Impact Value (SS 1974)1. The apparatus .... Merits of c4 coated coconut cover crush block over aggregate block 653 views Like

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Sep 12, 2015 Crushing Test Fig-1 Crushing Test Setup. One of the model in which pavement material can fail is by crushing under compressive stress. A test is standardized by IS: 2386 part-IV and used to determine the crushing strength of aggregates. The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied

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3 aggregate crushing value test report discussion What is the significance of ten percent fines value in This test is very similar to Aggregate Crushing Test in which a standard force 400kN is applied and fines material expressed as a percentage of the original mass is the aggregate crushing value

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Aggregate Impact Values, (AIV’s), below 10 are regarded as strong, and AIV’s above 35 would normally be regarded as too weak for use in road surfaces. Aggregate Impact Values and Aggregate Crushing Values are often numerically very similar, and indicate similar aggregate strength properties. Aggregate Impact Value; Test Specifications:

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Crushing test One of the model in which pavement material can fail is by crushing under compressive stress. A test is standardized by IS:2386 part-IV and used to determine the crushing strength of aggregates. The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load

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The test aims at looking for the forces required to produce 10% of fine values (i.e. weight of fines aggregates/weight of all aggregates = 10%). This test is very similar to Aggregate Crushing Test in which a standard force 400kN is applied and fines material expressed as a percentage of the original mass is the aggregate crushing value

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Procedure of Aggregate Impact Test. The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100-110 C for a period of 4 hours and cooled. (i) Sieve the material through 12.5 mm and 10.0mm IS sieves. The aggregates passing through 12.5mm sieve and retained on 10.0mm sieve comprises the test material

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Herein, the size effect of single-particle crushing of recycled brick and concrete recycled macadam under static load and the fractal characteristics of aggregate under impact load are investigated. The mechanical change law of recycled macadam after compaction crushing under static load is analyzed through single-particle load crushing and impact crushing tests with different particle groups

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Aggregate impact and crushing test SlideShare. 08/02/2012 Impact, 10% Fines & Crushing TestsFigure 2. Apparatus for the 10% fines test and aggregate crushing test (Millard, 1993) 2. The material used for both tests is aggregate passing a 12.70 mm sieve and retained on a 9.52 mm sieve. It shall be . get price

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It can be observed from Table 1 that the representative value of 95% guarantee rate strength of single-particle crushing is significantly affected by particle size and different materials. To clarify the relationship between single-particle crushing strength and particle size and material, the representative values of 95% guarantee rate of single-particle crushing strength of recycled bricks

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Aggregate crushing value formula is given below, Aggregate crushing value = (W3 / W) or W3 / (W2 – W1) W1 = Empty weight of cylindrical Measure. W2 = Weight of Aggregate with Cylindrical Measure. W = W2 –W1 = Weight of Aggregate Sample. W3 = Weight of crushed aggregate sample passed through 2.36 mm IS Sieve

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Theory: The “aggregate crushing value” give a relative measure of the resistance of an aggregate to crushing under gradually applied compressive load. It’s the percentage by weight of the crushed(finer) material obtained when the test aggregates are subjected to a specified load under standardized conditions, and is a numerical index of the strength of the aggregate used in road construction

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Calculation of Aggregate Crushing Value The ratio of weight of fines formed to the weight of total sample in each test shall be expressed as a percentage, the result being recorded to the first decimal place. Aggregate crushing value = (W2 x 100) / (W1-W) W2 =Weight of fraction passing through the appropriate sieve W1-W =Weight of surface dry sample

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Calculation of Aggregate Crushing Value. The crushing value of aggregates is measured in the ratio between the crushed aggregates, obtained from the IS sieve 2.36mm and the weight of the dried aggregate sample. At least three samples should be tested from the same batch and average value to get accurate results. The crushing value of aggregate = (W2/W1) x 100. Lab Report

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Aggregate crushing value test is done the find the actual crushing value of aggregate. We Need to carry out this test, To find out how much resistance does the aggregate has against the surface abrasion under traffic. To find out how much resistance does the aggregate can withstand under the

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The strength of coarse aggregates is assessed by aggregates impact test. The aggregate impact value provides a relative measure of resistance to crushing under a gradually applied compressive load. To achieve a high quality of pavement, lower aggregate impact value should be preferred

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Read More: Aggregate Crushing Value Test – Procedure and Result Objectives of Impact Value Test This method of test used to measure the impact value of aggregate use in the construction of Highway pavement and concrete structure

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Dec 15, 2017 Aggregate Impact Values and Aggregate Crushing Values are often numerically very similar, and indicate similar aggregate strength properties. Classification of aggregates using Aggregate Impact Value is as given below: Aggregate Impact Value Classification 20%.= Exceptionally Strong 10 – 20% .=Strong 20-30%. =Satisfactory for road surfacing 35%.= Weak for road surfacing

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