aggregate impact value test procedure

Nov 30, 2008· Aggregate Impact Value Test - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online.

Jul 02, 2021· Apparatus Required Impact Value testing machine Electrical oven Tamping rod Weigh balance IS Sieves -(12.5mm,10mm &2.36mm) The procedure of the test Aggregate sample shall consists of particles passing on 12.5mm Sieve and retained on 10mm sieve. The aggregate to be tested shall be dried in an oven for a period…

Answer (1 of 2): 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...

Mar 30, 2021· The aggregate impact value gives the relative measure of aggregate resistance to sudden shocks or loads. So in this article, we explain the procedures of the aggregate impact test for determining the impact value. Contents hide. 1 Tests on aggregates. 1.1 Must read : ...

Oct 04, 2020· AGGREGATE IMPACT VALUE TEST AIM: To find Impact value of the given aggregate sample. APPARATUS The apparatus consists of an impact-testing machine, a cylindrical measure, tamping rod, IS sieve, balance, tamping rod and oven. PROCEDURE The test sample consists of aggregates passing 12.5 mm...

5.1 Impact Value, as determined using the standard 4.5 kg (10 lbm) hammer, has direct application to design and construction of pavements and a general application to earthworks compaction control and evaluation of strength characteristics of a wide range of materials, such as soils, soil aggregates, stabilized soil and recreational turf. Impact Value is one of the properties used to evaluate ...

Sep 20, 2018· This video (Animation, Animated Video) explains how to determine aggregate impact value (Aggregate Impact Test). Aggregate test || Coarse aggregate Test (Civ...

Jan 23, 2018· Aggregate Impact Value Tester IS : 2386 (Part-IV) 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. iv) A tamping rod of 10mm circular cross section and 230mm length, rounded at one end. v) Oven. PREPARATION OF ...

Jun 22, 2014· The aggregate impact value is expressed as the percentage of the fines formed w.r.t the total weight of the sample. Aggregate Impact Value (AIV) = (100*M2)/M1. Where: M1 =Mass of the test specimen. M2 = Mass of the test specimen passing 2.36 mm test sieve.

Jul 16, 2014· Aggregate Impact Value Testing machine. The test equipment and the test procedure are quite simple and it determines the resistance to impact of stone aggregates simulating field condition. This test can be performed even at construction site or at …

Feb 22, 2010· 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 o f Aggregate Impact Test The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100-110° C for a period of 4 hours and cooled.

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.

And, hence, the finally aggregate impact value is 6.97 . Significance of impact test. The procedure of determining aggregate impact value is according to IS 2386. More will the impact value more will be the strength of aggregate. The elongated and flaky aggregate has low strength as it has a higher surface area and gets more stress on it.

Aggregate impact value test experiment. Aug 18, 2021 If the aggregates are weak, the stability of the concrete structure is adversely affected. The strength of coarse aggregates is assessed by Aggregate Impact Value test. The aggregate impact value provides a relative measure of resistance to sudden shock or impact. APPARATUS 1.

Dec 19, 2019· (b) Recommended Result of Impact Test: Aggregate impact value is the same as the abrasion test result. Impact value of aggregate should not exceed 30 percent for aggregate used for surface wearing course and should not exceed 45 percent for surface other than wearing course.

Aggregate impact value, = (B/A) * = ( 23.2/332.8) * = 6.97% And, hence, the finally aggregate impact value is 6.97 . Significance of impact test The procedure of determining aggregate impact value is according to IS 2386. More will the impact value more will be the strength of aggregate. The elongated and flaky aggregate has low ...

Observations and Calculations Calculate the aggregate impact value (AIV) expressed as a percentage to the first decimal place for each test specimen from the following equation: 𝑀2 (𝐴𝐼𝑉) = × 100 𝑀1 Where M 1 is the mass of the test specimen (in g); M 2 is the mass of …

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AGGREGATE IMPACT VALUE TEST DESIGNATION : B.S 812: Part 112:1990 (BRITISH STANDARD) SCOPE: This method covers the toughness of road stone materials by Impact test. INTRODUCTION: Toughness is the property of a material to resist impact. A test designed to evaluate the toughness of stones under repeated impacts is called Aggregate Impact Value Test. Due to traffic loads, the road …

Test Procedure. 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.

Jul 01, 2019· Procedure of Aggregate Impact value test. The test sample: normally aggregates sized 10.0 mm to 12.5 mm. the aggregates should be dried by heating at …

(Alan) Impact value of an aggregate is the percentage loss of weight particles passing2.36mm sieve by the application of load by means of 15 blows of standard hammer and drop,under specified test condition. 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 their resistance to a slowly applied ...

Procedure of Aggregate Crushing Value Test. Put the cylinder in position on the base plate and weigh it (W). Put the sample in 3 layers, each layer being subjected to 25 strokes using the tamping rod. Care being taken in the case of weak materials not to break the particles and weigh it (W1). Level the surface of aggregate carefully and insert ...

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. Results: The mean of the three results is reported as the AIV (Aggregate Impact Value) of the ...

Calculate Aggregate Impact Value. The ratio of the weight of fines formed to the total sample weight in each test shall he expressed as a percentage, the result being recorded to the first decimal place: Aggregate Impact Value = W B W A × 100. Where, W A is Weight of oven-dried sample

And, hence, the finally aggregate impact value is 6.97 . Significance of impact test. The procedure of determining aggregate impact value is according to IS 2386. More will the impact value more will be the strength of aggregate. The elongated and flaky …

Sep 05, 2018· AGGREGATE IMPACT VALUE TEST • The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact. • The property of a material to resist impact is known as toughness. Due to movement of vehicles on the road the aggregates are subjected to impact resulting in their breaking down into smaller pieces.

Aggregate Impact Value; Test Specifications: Aggregate Impact Value. The test sample shall consist of aggregates the whole of which passes through ½ in B.S. test sieve and is retained on a 3/8 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 100-110 °C and ...

The procedure of the impact value test includes the following series of steps: 1. The aggregate samples of size 10mm to 12.5mm (passing through 12.5mm sieve and retained on 10mm sieve) are first taken and oven-dried at a temperature ranging from 100 degrees Celsius to 110 degrees Celsius for about four hours. 2.

Mar 30, 2020· The aggregate impact value test is an important test of aggregates. It is done to obtain the resistance and impact of aggregates (stones). In this test a machine is used, which is called impact testing machine.