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  • Aggregate Impact Value AIV The apparatus has been designed in a particularly heavy duty form with specially hardened steel surfaces for minimum wear The assembly is heavily plated to ensure corrosion resistance and forms a rigid frame around the quick-release trigger mechanism which ensures an effective free fall of the hammer when released...

  • Aggregate impact value is the ratio of the weight of the fraction passing through 236 mm weight W2 by the total weight of the sample weight W1 W2 Aggregate Impact Value = W2/ W1 W2 100 = 80 gm / 300 gm = 2667 Impact Value Where W1= Weight of...

  • Aggregates Impact Test AIV Introduction Impact value of an aggregate is the percentage loss of weight particles passing 236mm 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...

  • JCJ-II Aggregate Impact Value Testing Apparatus Technical Parameters Impact hammer weight 13...

  • Aggregate Impact Value Civil Engineering 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 125mm 10mm and 236mm 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...

  • aggregate impact value AIV which gives a relative measure of the resistance of an aggregate to sudden shock or impact Two procedures are described one in which the aggregate is tested in a dry condition and the other in a soaked condition The methods are applicable to aggregates passing at 140 mm test sieve and...

  • With aggregate of aggregate impact value higher than 30 the result may be anomalous Also aggregate sizes larger than 14 mm are not appropriate to the aggregate impact test The standard aggregate impact test shall be made on aggregate passing a 140 mm BS test sieve and retained on a100 mm BS test sieve...

  • Determination of aggregate impact value AIV of given aggregate sample BS-812 Significance Aggregates used in the construction of roads should be strong enough to resist crushing under traffic wheel loads It gives relative measure of the resistance of an aggregate to sudden shock or impact...

  • Lower the impact value stronger the aggregate again the impact these for good quality concrete aggregate with lower AIV Aggregate Impact Value is prepared AIV should not be exceed 30 for concrete used for wearing surface such as road work or runways or earth force or airport AIV should not be exceed 45 for concrete used for any non...

  • Dec 15 2017 0183 32 Aggregate Impact Value AIV is the percentage of fines produced from the aggregate sample after subjecting it to a standard amount of impact The standard amount of impact is produced by a known weight ie a steel cylinder falling a set height a prescribed number of times onto an amount of aggregate of standard size and weight retained in...

  • Aggregate Impact value Test Apparatus Procedure and us The apparatus of the aggregate impact value test consists of A testing machine weighing 45 to 60 kg and having a metal base with a plane lower surface of not less than 30 cm in diameter Level and plane concrete floor of minimum 45 cm thickness are used to support it...

  • 412 AGGREGATE IMPACT VALUE AIV TEST This tests was performed by the Aggregates Impact Value AIV Apparatus to determine the aggregate impact value which provides a relative measure of the resistance of an aggregate to sudden shock or impact The following results were obtained from this test Table 3AIV data sheet Sample no 1 2 Average Total weight of sample m1 4711 4572 Wt...

  • Aggregate impact value AIV The AIV is determined to portray the resistance of an aggregate to abrupt impact by outside forces either mechanical or applied with basic aim to determine toughness and feasibility of an aggregate to short term instantaneous applied force...

  • Standards BS 812 112 General Description The Aggregates Impact Value AIV Apparatus is used to determine the aggregate impact value which provides a relative measure of the resistance of an aggregate to sudden shock or impact The counter fitted to the machine automatically records the number of blows delivered to the sample...

  • I loviiuvs and tested for their Aggregate Impact Values and Los Angeles Abrasion Valu The results urn1 interpreted in different ways and it was found that the ratio of LAAV/AIV for Charnockite/ lumockitic Gneiss is 1242 0115 The average values for AIV and LAAV of Charnockite/ < h n Mockitic Gneiss rock are 23 and 29 respectively...

  • This video is all about the introduction with the CEE 4652 Transportation Engineering Sessional I Starting with this course we have introduced the course...

  • Aggregate Impact Value Aiv Test Define Aggregate impact value aiv test bs 812 part 3 1975 a surface dry standard size 14 10 mm aggregate sample is placed in a cylindrical cup of prescribed dimensions and pacted the sample is subjected to 15 blows of a hammer 135 15 kg diameter 100 mm falling freely over a height of 380 mm while the time interval between the...

  • Jan 09 2018 0183 32 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 Testing Apparatus meets with BS 812 it is robustly designed to determine the Aggregate Impact Value AIV of aggregates which provides a relative measure of the resistance of an aggregate to sudden shock or impact The counter fitted to the machine automatically records the number of blows delivered to the sample...

  • Jun 22 2014 0183 32 The aggregate impact value is expressed as the percentage of the fines formed wrt 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 236 mm test sieve...

  • The Aggregates Impact Value AIV Apparatus is used to determine the aggregate impact value which provides a relative measure of the resistance of an aggregate to sudden shock or impact The counter fitted to the machine automatically records the number of blows delivered to the sample...

  • One of the tests that are done on aggregate is impact value test The amount of patients obtained by this way is related to the value of fragmentation and can in fact be used as an alternative test Materials used to test the impact value must pass the sieve No 1/2 125 mm and stuck on the sieve No 3/8 95 mm The impact test for...

  • It is carried out by filling a steel test mold with a sample of aggregate 10 14 mm and then the impact load applied is by dropping hammer at a height of 380 mm The Aggregate Impact Value AIV is the percentage of fines passing 236 mm BS test sieve after 15 blows 9 Table 6 Test result of aggregate impact value...

  • In this task students will exposed to the apparatus on how to measure the Aggregate Impact Value of natural aggregate used in laboratory 12 Objectives To determine the aggregate impact value AIV of natural aggregate used in the laboratory 13 Learning Outcomes At...

  • Procedure of Aggregate Impact value test The test sample normally aggregates sized 100 mm to 125 mm the aggregates should be dried by heating at 100-110 0C for a period of 4 hours and cooled...

  • Oct 27 2017 0183 32 The Impact value of an aggregate is the percentage loss of weight particles passing 236mm sieve by the application of load by means of 15 blows of standard hammer and drop under specified test condition AIV gives A relative measure of the resistance of an aggregate to sudden impact which is differs from withstand to slowly applied...

  • 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 the material passing the 236 mm test sieve in...

  • Aggregate Impact Value Test Report Conclusion Aggregate Crushing Value Test Conclusion Mine Aggregate impact and crushing test slideshare 8 feb 2012 these crushing tests can reveal aggregate properties subject to per cent of the aggregate crushing value and itcan be used for the same purpose discussiona report the geological description of the aggregate the...

  • May 07 2013 0183 32 Objective For determination of the aggregate impact value of coarse aggregate which passes 125 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 Properti Equipment Apparatus Aggregate Impact Test Machine Sieves 125mm 10mm Cylindrical metal measure Tamping Rod...

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