AGGREGATES CRUSHING VALUE TEST (IS: 2386 – PART-IV) Purpose: Purpose of this test covers the procedure to determine the aggregates crushing value of coarse aggregates. Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load.
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What is the purpose of the sand equivalent test? Fines and dust in asphalt and concrete aggregates have always been a problem. Whether naturally occurring or resulting from degradation during handling and transport, undesirable or unknown amounts of fines can impact the performance and cost of composite materials.
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AGGREGATES CRUSHING VALUE TEST (IS: 2386 – PART-IV) Purpose: Purpose of this test covers the procedure to determine the aggregates crushing value of coarse aggregates. Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load.
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Advantages of aggregate impact value test Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Advantages of aggregate impact value test, quarry, aggregate, and different kinds of minerals.
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3.9 The cleanness value of coarse aggregate – Test Method 3. 3.10 The crushing resistance of coarse aggregate under a specifiedload – Test Method 3.10. 3.11 The weathering quality index of coarse aggregate –Test Method 3.11. 3.12 The abrasion resistance of aggregate by use of the Los Angelesmachine – Test Method 3.12
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Procedure of Aggregate Crushing Value. Take a sample of aggregates by sieving through 12.5mm and retained on 10mm. The aggregate shall be tested in dry surface conditions. If dried by heating, the period of drying shall not exceed 4 hours and temp shall be 100-110 deg C.
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This percentage is known as a crushing value of aggregate. This percentage should not exceed 30% of the total weight of aggregate taken for the test. The aggregate crushing value test result should not be more than 30 % for the concrete used for roads and pavements and, in case of other structures; it may be permitted up to 45%.
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Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load. Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates are subjected to a specified load under standardized conditions.
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Advantages of aggregate impact value test Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Advantages of aggregate impact value test, quarry, aggregate, and different kinds of minerals.
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AGGREGATES CRUSHING VALUE TEST (IS: 2386 – PART-IV) Purpose: Purpose of this test covers the procedure to determine the aggregates crushing value of coarse aggregates. Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load.
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Aggregate Crushing value is a relative resistance of aggregates to crushing under gradually applied compressive load. Aggregate Crushing Value Test is important to test to be performed on aggregate. The strength of aggregate parent rock is determined by preparing cylindrical shape specimens of size 25 mm diameter and 25 mm height.
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The aggregates crushing value test should be performed as per IS code 2386 Part IV. First, fill the sample aggregate with one-third of the cylindrical measure in three layers. Each layer should be tamped 25times freely. After filling the sample aggregate, weigh and record it as W1. Now fill the aggregate in the mould along with the plunger on top.
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For determination of the aggregate crushing value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. REFERENCE STANDARD IS: 2386 (Part IV)-1963 Methods of test for aggregate for concrete Part IV Mechanical Properties.
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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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Abrasion Test is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. The percentage wear of the sample aggregates due to rubbing with steel balls is determined and is known as Los Angeles Abrasion Value.
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AGGREGATES CRUSHING VALUE TEST (IS: 2386 – PART-IV) Purpose: Purpose of this test covers the procedure to determine the aggregates crushing value of coarse aggregates. Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load.
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the purpose of aggregate crushing value test. the purpose of aggregate crushing value test. 2013818of the Aggregate Crushing Value and itcan be used for the same Chat Online aiv test aggregate advantages
Aggregate Crushing Value Civil EngineeringAGGREGATE CRUSHING VALUE This test helps to determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) – 1963.
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The aggregates crushing value test should be performed as per IS code 2386 Part IV. First, fill the sample aggregate with one-third of the cylindrical measure in three layers. Each layer should be tamped 25times freely. After filling the sample aggregate, weigh and record it as W1. Now fill the aggregate in the mould along with the plunger on top.
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Recommended aggregate impact value Precaution for aggregate impact value test. The sample of aggregate should be sieved in circular motion or movement. The sample aggregate should not be overheated on the oven. The weight of samples and dust should be tamped with the help of a standard size tamping rod.
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In addition to the limits specified in AS 2758.7, the aggregate crushing value of the ballast material for Class H track when determined in accordance with AS 1141.21, for the fraction of material passing the 53.0 mm test sieve and retained on 37.5 mm test sieve shall have a result no greater than 30%.
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Aggregate impact value (The value of aggregate impact test) = (W1/W2)*100. The value of aggregate impact test should not be more than 45% by weight of aggregates, used for concrete other than wearing surface. An impact value 35% is permissible for the bituminous macadam. Maximum permissible impact value for the water bound macadam is 40%.
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AGGREGATE CRUSHING VALUE 1.Objective The aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. With aggregate of aggregate crushing value 30 or higher, the result may be anomalous, and in such cases the ten percent fines value should be determined instead.
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Aggregate impact value test gives an indication of aggregate’s toughness property (i.e. property of a material to resist impact) Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. Aggregate impact value (%) Toughness Properties
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Principle of the Test: To produce the abrasive action by use of standard steel balls which when mixed with the aggregate and rotated in a drum for specific number of revolution cause impact on aggregate. The %age wear due to rubbing with steel balls is determined and is known as abrasion value. Prepare the sample by the portion of an aggregate
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Aggregate Impact Value Test. AIV test is conducted to determine the Aggregate Impact Value of Coarse aggregate. The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates differs from Its resistance to a slow compression load.
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AGGREGATES CRUSHING VALUE TEST (IS: 2386 – PART-IV) Purpose: Purpose of this test covers the procedure to determine the aggregates crushing value of coarse aggregates. Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load.
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