How do you calculate aggregate impact test?

How do you calculate aggregate impact test?

Calculation. Aggregate impact value is the ratio of the weight of the fraction passing through 2.36 mm (weight W2) by the total weight of the sample (weight W1 + W2).

How is aggregate impact value expressed?

The aggregate impact value is expressed as the percentage of the fine passing 2.36 mm sieve formed in terms of the total weight of the sample.

What tests are done on aggregate?

Specific Gravity and Water Absorption Test of Coarse Aggregate. Specific gravity and Water Absorption Test of Aggregates are major important tests to be performed on aggregate. These two parameters or properties of aggregate play an important role in the mix design of concrete.

Is code for aggregate impact value test?

Aggregate Impact Value Test Procedure as per IS: 2386 Part-4 (1963)

Why AIV test is done?

PURPOSE OF TEST: Aggregate Impact Value test determines the Aggregate Impact Value (AIV) of aggregates which provides a relative measure of the resistance of an aggregate to sudden shock or impact. Resistance of the aggregates to impact is termed as toughness.

What is ACV test?

The Aggregate Crushing Value (ACV) Test Set measures how resistant an aggregate is, when being crushed under a gradually applied compressive load. Each set consists of steel cylinder, plunger, base plate, cylindrical measure and tamping rod.

What is the main objective of aggregate impact test?

What is the principle of aggregate impact test?

The test sample shall be subjected to a total of 15 such blows each being delivered at an interval of not less than one second. The crushed aggregate shall then be removed from the cup and the whole of it sieved on the 2.36 mm IS Sieve until no further significant amount passes in one minute.

Which test is used for coarse aggregate?

Durability of coarse aggregate is normally evaluated in the sulfate soundness test and water absorption tests, and by measuring resistance to impact in the Los Angeles abrasion and impact test. These tests suffer from some disadvantages: poor precision and inadequate correlation with field performance.

Is 2386 a part6?

1.1 This standard (Part VI) covers the test procedure for measuring the mortar-making properties of fine aggregate for concrete by means of a compression test on specimens made from a mortar of a plastic consistency and gauged to a definite water-cement ratio.

Is 383 an impact value?

The aggregate impact value shall not exceed 45 percent by weight for aggregates used for concrete other than for wearing surfaces and 30 percent by weight for concrete for wearing surfaces, such as runways, roads and pavements.