The aggregate impact value is a measure of resistance to sudden impact or shock, which may differ from its resistance to gradually applied compressive load Procedure of Aggregate Impact Test The test sample consists of aggregates sized 100 mm 125 mm Aggregates may be dried by heating at 100-110° C for a period of 4 hours and cooled

Test Trays; Sample of 20mm Aggregate; Procedure Take the sample aggregate; Pass the sample with 125 mm sieve and retained on 10 mm sieve Fill the Cylinder Cup (Diameter 75 mm Depth 50 mm) in three layer with 25 gentle stroke each with tamping rod (10 mm in diameter and 230 mm long)

Aggregate Impact Value test procedure | Impact test on aggregate admin — April 23, 2019 in Aggregate test • 2 comments Aggregate impact value test required to find out the physical strength of aggregate

Result Introduction measure of degradation of mineral aggregates of standard grading resulting from a combination of action including abrasion and grinding in a rotation steel drum containing a specific number of steel spheres give a measure of aggregate hardness, as specified

The aggregate impact value is expressed as the percentage of the fines formed in terms of the total weight of the sample 100 W2 Where, W1 = Original weight of the sample Aggregate Impact Value = W1 W2 = Weight of fraction passing 236mm IS sieve

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AGGREGATE IMPACT VALUE This test is done to determine the aggregate impact value of coarse aggregates as per IS: 2386 (Part IV) – 1963 The apparatus used for determining aggregate impact value of coarse aggregates is

The aggregate impact value indicates a relative measure of the resistance of aggregate to a sudden shock or an impact, which in some aggregates differs from its resistance to a slow compressive load The method of test covers the procedure for determining the aggregate impact value of coarse aggregates

And the impact value is measured as percentage of aggregates passing sieve (W2) to the total weight of the sample (W1) Aggregate impact value = (W1/W2)*100 Aggregates to be used for wearing course , the impact value shouldn’t exceed 30 percent

Aggregate Impact Value; Test Specifications: Aggregate Impact Value The test sample shall consist of aggregates the whole of which passes through ½ in BS test sieve and is retained on a 3/8 in BS test sieve The aggregate comprising the test sample shall be dried in an oven for a period of four hours at a temperature of 100-110 °C and cooledThe measuring cup shall be filled about one

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 slowly applied compressive load With aggregate of aggregate impact value higher than 30 the result may be anomalous Also, aggregate sizes ‘larger than 14 mm are not appropriate to the aggregate impact test

Aggregate Impact Value TestAim: To conduct a test to determine aggregate impact value of coarseaggregateNote: Aggregate Impact Value gives a relative measure …

AGGREGATE IMPACT VALUE This test is done to determine the aggregate impact value of coarse aggregates as per IS: 2386 (Part IV) – 1963 The apparatus used for determining aggregate impact value of coarse aggregates is

Calculation • Aggregate impact value = W₂/W₁ x 100 percent W₁ g → The original weight of the oven dry sample W₂ g → The weight of fraction passing 236 mm IS …

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%

AGGREGATE IMPACT VALUE TEST - academiaedu The aggregate impact value indicates a relative measure of the resistance of aggregate to a sudden shock or an impact, which in some aggregates differs from its resistance to a slow compressive load

Conclusion For Aggregate Impact Value Test However, the engineering values of aggregates extracted from reclaimed asphalt pavement have not been fully Figure 3: (a) Aggregate Crushing Value and (b) Aggregate Impact Value Apparatus Impact value of an aggregate test gives an idea of toughness of the aggregate to resist fracture under the CONCLUSION

Aggregate impact value = (W1/W2)*100 Aggregates to be used for wearing course, the impact value shouldn’t exceed 30 percent For bituminous macadam the maximum permissible value is 35 percent For Water bound macadam base courses the maximum permissible value defined by IRC is 40 percent Also read: Impact Value Test Procedure of Aggregates 4

Aggregate Impact Test Machine; Sieves (125mm,10mm) Cylindrical metal measure; Tamping Rod; Balance (0-10kg) Oven(300 0 c) Aggregate Impact Value Test Apparatus Preparation Of Test Sample Test sample consist of aggregate passing a 125mm IS sieve and retained on a 10mm IS sieve The aggregate to be tested is dried in oven for a period of not less than 4hours

Aggregate impact and crushing test 1 Impact, 10% Fines & Crushing Tests NANYANG TECHNOLOGICAL UNIVERSITY School of Civil and Structural Engineering stoneORATORY - PAVEMENT MATERIALS AGGREGATE IMPACT TEST, TEN PERCENT FINES TEST AND AGGREGATE CRUSHING TESTOBJECTIVESTo assess the

Conclusion For Aggregate Impact Value Test However, the engineering values of aggregates extracted from reclaimed asphalt pavement have not been fully Figure 3: (a) Aggregate Crushing Value and (b) Aggregate Impact Value Apparatus Impact value of an aggregate test gives an idea of toughness of the aggregate to resist fracture under the CONCLUSION

If impact value is less than 10% then aggregate is said to be exceptionally strong, if it is in range of 10 to 20% then they are good, aggregates having impact value less than 35% are considered satisfactory by the IRC(Indian Roads Congress)

aggregate crushing value test report result conclusion discussion for aggregate crushing value test discussion for aggregate crushing value test Milling is also known as grinding it is a material more refining process A A study on types and quality of aggregates used in

The aggregate impact value is expressed as the percentage of the fines formed wrt the total weight of the sample Aggregate Impact Value (AIV) = (100*M2)/M1 Where:

03/11/2013 · The aggregate sample: The material for the standard test consists of aggregates sized 200mm to 255mm The aggregates may be dried at heating at 100 0 -110 0 C for not moe than 4 hours and cooled at room temperature before testing,if necessary

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%

Basically, the aggregates impact value is aggregate which provides a relative measure of the resistance of an aggregate to sudden shock or impact However, it can be explain as the aggregate crushing value which is defined as a ratio of the weight, of fines passing the specified sieve to the total weight of the sample expressed as a percentage The value is usually recorded up to the first

Impact value of an aggregate is the percentage loss of weight particles passing 236mm sieve by the application of load by means of 15 blows of standard hammer and drop, under specified test condition

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

As per IS: 2386 (IV) 9377 This Apparatus is used to determine aggregate impact value of coarse aggregate The hammer of the tester fall freely from 380 mm height on coarse aggregate for 15 times/15 secthe crushed aggregate removed from the cup ,then sieved and weighed

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