Determination of Aggregate Impact Value Impact Test on Aggregates is done to carry out to Assess their suitability in road construction on the basis of impact value. The apparatus as per IS 2386 Part IV 1963 consists of i A testing machine weighing 45 to 60 kg and having a metal base with a painted lower surface of not less thanGet Price
Aggregates Impact Test Conforming to IS 2386 Part 41963 With respect to concrete aggregates toughness is also consider. The resistance of the material to failure by impact is known as toughness. The aggregates should therefore have suffic
Used to determine the aggregate impact value AIV which provides a relative measure of the resistance of an aggregate to sudden shock or impact. The machine is robustly designed , made from steel protected against corrosion. Fit with a counter to check the number of blows delivered to the sample.
Determination of Aggregate Impact Value Impact Test on Aggregates is done to carry out to Assess their suitability in road construction on the basis of impact value. The apparatus as per IS 2386 Part IV 1963 consists of i A testing machine weighing 45 to 60 kg and having a metal base with a painted lower surface of not less than
To determine the aggregate impact value of coarse aggregates as per IS 2386 Part IV 1963. APPARATUS Aggregate Impact Value Tester IS 2386 PartIV i Impact testing machine conforming to IS 2386 Part IV 1963 ii IS Sieves of sizes 12.5mm, 10mm and 2.36mm iii A cylindrical metal measure of 75mm dia. and 50mm depth
The aim of aggregate impact test is to determine the relative measure of the resistance of aggregate to sudden shock or impact in which in some aggregate differs from its resistance to a slowly applies compressive load. The property of a material
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.
Aggregate Impact Value Test Specifications Aggregate Impact Value. The test sample shall consist of aggregates the whole of which passes through in B.S. test sieve and is retained on a 38 in B.S. test sieve. The aggregate comprising the test sample shall be dried in an oven for a period of four hours at a temperature of 100110 C and
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 2.36mm IS sieve.
If the aggregate supply curve shifted from AS0 to AS1 and the aggregate demand curve remains at AD0, we could say that . aggregate supply has increased, equilibrium output has decreased, and unemployment has increased aggregate supply has decreased, equilibrium output has decreased, and unemployment has increased
Impact value of aggregate will give aggregate capability against sudden loads or forces. For this test also aggregate passing through 12.5mm and retained on 10mm sieve is taken and oven dried. Fill the cylinder with aggregate in 3 layers, 25 strokes of tamping for each layer.
The apparatus used for determining aggregate impact value of coarse aggregates is Impact testing machine conforming to IS 2386 Part IV 1963,IS Sieves of sizes 12.5mm, 10mm and 2.36mm, A cylindrical metal measure of 75mm dia. and 50mm depth, A tamping rod of 10mm circular cross section and 230mm length, rounded at one end and Oven.
The crushed aggregate is removed from the test specimen and sieve it through the 2.36 mm IS sieve. An impact value is measured as of aggregates passed through the 2.36mm sieve W2 to the total weight of the sample W1. Aggregate impact value The value of aggregate impact test W1W2100
The L.A. abrasion test measures the degradation of a coarse aggregate sample that is placed in a rotating drum with steel spheres Figure 7. As the drum rotates the aggregate degrades by abrasion and impact with other aggregate particles and the steel spheres called the charge. Once the test is complete, the calculated mass of
To evaluate the toughness of a stone i.e. the resistance of the aggregates to fracture under repeated impacts is called Impact test is done to determine the aggregate impact value of coarse aggregate as per IS 2386 PartIV 1993. Aggregate Impact Value Test as per IS 2386 PartIV 1993
This Lecture include following Topics Different types of test done on Aggregates a. Aggregate Impact Test b. Los Angeles Abrasion Test c. Crushing Test d. Shape Test e. Soundness Test f
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Objective For determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. Reference Standards IS 2386Part IV1963 Methods of test for aggregate for concrete Part IV Mechanical Properties. Equipment amp Apparatus Aggregate Impact Test Machine Sieves 12.5mm,10mm Cylindrical metal measure Tamping Rod Balance
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The aggregate impact value indicates a relative measure of the resistance of the aggregate to a sudden shock or impact which in some aggregates differs from its resistance to a slow compressive load. From the calculations done we know that the aggregate can be acceptable as their Aggregate Impact value is less then 20 Aggregate Impact Value 10.