Aggregate Impact Value on Coarse Aggregates Apparatus for Aggregate Impact Test. 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 30 cm in diameter.

Impact, 10% Fines & Crushing TestsQuarry plant such as crushers, screens, conveyors, etc. are all subject to wearand these crushing tests can indicate the magnitude of the problem for designpurposes.PROCEDURE - Aggregate Impact Value (SS 1974)1. The apparatus consists of a steel test mould with a falling hammer as shown in Figure 1. The hammer slides freely between vertical …

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.

The aggregate impact value is a calculation of the resistance to abrupt impact, bang or shock, which may vary from its resistance to steadily, applied compressive weight. Procedure: The test specimen includes the aggregates of size ranging from 10.0 mm 12.5 mm. Aggregates can be dehydrated by warming them at temperatue of 100-110° C for a timeframe of 4 hours and spread to cool down.

2.1 Object - This method of test covers the procedure for determining aggregate crushing value of coarse aggregate. NOTE 1 -The 'aggregate crushing value' gives a relative measure of the resistance

AGGREGATE CRUSHING VALUE This test helps to determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) – 1963. The apparatus used is Cylindrical measure and plunger, Compression testing machine, IS Sieves of sizes – 12.5mm, 10mm and 2.36mm . Procedure to determine Aggregate Crushing Value i) The aggregates passing through 12.5mm and retained on …

This British Standard, a part of the BS 812 series, describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact.

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.

Procedure for aggregate impact value test. i) The cup of the impact testing machine is fixed firmly in position on the base of the machine and the whole of the test sample is placed in it and compacted by 25 strokes of the tamping rod. ii) The hammer is raised to 380mm above the upper surface of the aggregates in the cup and allowed to fall freely onto the aggregates. iii) The test sample is ...

Aggregate Impact Value. AGGREGATE IMPACT VALUE This test is done to determine the aggregate impact value of coarse aggregates as per IS: ... Procedure to determine Aggregate Impact Value …

Impact testing machine; Spanner; Balance; Procedure: Aggregate Impact Value. Aggregate Impact Value. The cup shall be fixed firmly in position on the base of the machine and the whole of the test sample will be placed in it and compacted by a single tamping of 25 strokes of the tamping rod. The hammer shall be raised until its lower face is 15 in. above from the upper surface of the aggregate ...

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: 2386(Part IV)-1963 Methods of test for aggregate for concrete Part IV Mechanical Properties .

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.

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Aggregate Crushing Value and Its Test Procedure: One of the test in which concrete material can fail is due to crushing under compressive stress. Aggregate crushing test is standardized by IS: 2386 part-IV and used to verify the crushing strength of aggregates.

2017-12-07· In this video, we will see the procedure of determining aggregate impact value as per IS 2386 PART4.

Procedure. The test sample consists of aggregates passing 14 mm and retained on 10 mm sieve. Wash the sample and dry at 100 to 110 °C for four hours and cool to room temperature ; Fill the cylindrical measure with the aggregate sample and tamp with 25 blows of tamping rod. Weigh and record the mass of the sample (M1) Transfer the sample to the machine cup and compact it by applying 25 strokes ...

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. Apparatus The apparatus consists of an impact testing machine, a cylindrical measure ...

2011-02-04· 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.

The aggregate impact value gives a relative measure of the resistance of the aggregate to sudden shock or impact. The particular purpose which an aggregate is meant to serve requires the aggregate to have a particular strength which is usually stated in the specification. This test provides a method for measuring this strength. 7.6.2 Method outline. A test specimen, of chosen fractions, is ...

Sieve the aggregate and obtain the portion passing 12. 2.Faculty : Faculty of Civil and Environmental Engineering Department : Department of Infrastructure and Geomatic Engineering Title : AGGREGATE IMPACT VALUE Apparatus for the Aggregate Impact Value Test (Millard. Transfer the aggregate from the cylindrical measure to the cup in 3 layers and compact each layer by tamping in 25 strokes with ...

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.

The aggregate crushing value (ACV) provides relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Two versions available: 150 (standard) and 75 mm dia. The apparatus comprehend cylinder, plunger, base plate, tamping rod and measure. Cylinder, plunger and base plate are made from special alloy steel, hardened to 650 HV (57,8 HRC), and ...

Procedure to determine Aggregate Impact Value i) The cup of the impact testing machine should be fixed firmly in position on the base of the machine and the whole of the test sample placed in it and compacted by 25 strokes of the tamping rod.

BS 812 part 110 describes a method to determine the aggregate crushing value (ACV) which gives a relative measure of the crushing resistance of aggregate under an increasing compressive load.The method is applicable to aggregates passing a 14.0 mm test sieve and retained on a 10.0 mm test sieve.

crushing strength of aggregate. –Test method: Crushing value test Other Mechanical Properties of Aggregates: a) Impact value: Impact value of aggregates measures the toughness of particles by impact. Total 54 14 . b) Abrasion: Abrasion of aggregates measures the resistance of aggregates against wearing. • It is an important property of concrete in roads and in floor surfaces subjected to ...

Aggregate impact value is measured of toughness of aggregate . Toughness is the property of material which indicate its capacity which impact in sudden.

BS 812 part 110 describes a method to determine the aggregate crushing value (ACV) which gives a relative measure of the crushing resistance of aggregate under an increasing compressive load. The method is applicable to aggregates passing a 14.0 mm test sieve and retained on a 10.0 mm test sieve.

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