Aggregate impact value test procedure pdf

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“Knowledge is such a treasure which cannot be stolen”. IS 5640 (1970): Method of test for determining aggregate impact value of soft coarse aggregates [CED The aggregate impact value test is done to test the compressive strength of aggregate when sudden and immediate impact force acted on it. IMPACT VALUE OF AGGREGATE. 1. Objective. The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock. Take test samples of aggregates passing through 12.5 mm IS sieve and retained on 10 mm IS sieve. · Fill the aggregates up to about 1/3 full in the cylindrical A relative measure of the resistance of aggregate due to the sudden shock or impact on it is called aggregate impact value. Based on the impact value, we canThis test provides a method for measuring this strength. 7.6.2. Method outline. A test specimen, of chosen fractions, is compacted in a standardised manner, IMPACT VALUE. 4.1 Object -. This method of test covers the procedure for determining the aggregate impact value of coarse aggregate. NOTE -The. Scope: This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of 1. Seive the aggregate and obtaian the portion passing 14mm and retained 10mm sieve. · 2. Wash the aggregate until clean and the aggregates may be dried by The 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).