Procedure of 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. (i) Sieve the material through 12.5 mm and 10.0mm IS sieves. The aggregates passing through 12.5mm sieve and retained on 10.0mm sieve comprises the test material.
a) Impact Testing Machine E.ta#r~dbpctT~ The machine consists of a metal base with a plane lower surface supported well on a fm floor, without rocking.A detachable steel cup of internal diameter 10.2 cm and depth 5 cm is rigidly fastened centrally to the base plate. A metal hammer of weight between 13.5 and 14.0 kg having the lower end cylindrical in shape, 10 cm in …
As you all know, road transportation facilities will always busy with live loads. The constant movementpressure will be applied on the road continually. The coarse aggregate used in the development will able to handle this pressure. Due to massive load movement on it, the coarse aggregate …
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 ...
Aggregate impact value is the measure of the resistance of an aggregate to sudden shock or impact. This test is conducted to determine the toughness of aggregates. This test helps to …
Test AIV (Aggregate Impact Value, SS 1974) The AIV (Aggregate Impact Value) is a standard test procedure by which the impact strength of aggregates is tested. Just like in Protodyakonov's test, the material used consists of irregularly shaped particles of the -14 + 10 mm size fraction. The weight of the specimen is A.
Aggregate Impact value Test Apparatus, Procedure and uses . Jul 01, 2019 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 May 21, 2020 Preparation of Aggregate Impact Value …
Procedure The aggregate sample: The material for the standard test consists of aggregates sized 10.0 mm to 12.5 mm.The aggregates must be in a surface dry condition before testing. The aggregates may be dried by heating at 100 oC – 110 o C for not more than 4 hours and cooled to room temperature before testing, if necessary.
precautions required during aggregate impact value test. Posted at: November 6, 2012 [ 4.7 - 1816 Ratings] ... Feb 04, 2011 · AGGREGATE IMPACT VALUE TEST; AGGREGATE CRUSHING ...
Oven(300 0 c) Aggregate Impact Value Test Apparatus. Preparation Of Test Sample. Test sample consist of aggregate passing a 12.5mm IS sieve and retained on a 10mm IS sieve. The aggregate to be tested is dried in oven for a period of not less than 4hours. ... Precautions. Use hand gloves while removing containers from oven after switching off ...
Importance of Impact Test on Aggregates. The impact test on aggregate is carried out to know the response of aggregates to different kinds of loads that the aggregates will be subjected to during their service life.
The load results into the decrease in the compressive strength of the aggregates. this test is usually performed to assess the use of aggregates in the pavement structures and the layers adopted during the road construction.
Aggregate impact value is the measure of the resistance of an aggregate to sudden shock or impact. This test is conducted to determine the toughness of aggregates. This test helps to evaluate the quality of aggregates which can be used in road construction. The specifications for this test are given in IS : 2386 Part IV 1963 mechanical properties.
To wear safety shoes & goggles at the time of testing. Before testing, machine should be properly checked. Special care should be taken that no outer air enters when using the balance. After test clean the sieve by a …
The procedure for conducting an Aggregate Impact Test (AIV) is as follows: Prepare the test sample by selecting aggregates sized between 10.0 mm and 12.5 mm. Dry the aggregates by heating at 100-110° C for 4 hours or until …
Formula Used Aggregate Impact value is expressed as percentage of fineness formed w.r.t total weight of sample. Aggregate Impact Value (AIV) = (M2/M1)*100. Where M1= Mass of test specimen. M2= Mass of test specimen passing 2.36 mm test sieve. I.V.A = M2/M1 x100 OR I.V.A = C/A x100 M1 = Total weight M2 = Weight of sample pass
Impact test of aggregate is peformed to check impact resistance of stone aggregates. Impact testing machine is used to perform this test. Stones aggregates of 10 mm to 12.5 mm are put in cylinder. Stone aggregates are …
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 100-110 0C for a period of 4 hours and cooled. Sieve the material …
Some precautions for impact value test are key for safety and valid results:. Everyone should wear the right PPE, like goggles and gloves. Make sure the impact value test apparatus is right before starting.; Do the test on a steady surface to avoid vibrations. Check the equipment often for wear or damage to keep it working well.
This test method, which is a modification of AASHTO Designation T 96, is used to determine the resistance of coarse aggregate to impact in a rotating cylinder containing metallic spheres. This test is known as the Los Angeles Rattler Test. B. APPARATUS (See Figure 1) 1.Los Angeles Machine. The Los Angeles Abrasion Testing Machine
The Aggregate impact value indicates a relative measure of resistance of aggregate to impact load which has different effect than the resistance to gradually increasing compressive stress. A test designed to evaluate the toughness of stones or the resistance of the aggregates to fracture under repeated impacts is called impact…
Impact test of aggregate is peformed to check impact resistance of stone aggregates. Impact testing machine is used to perform this test. Test Procedure. Aggregate Impact Testing Machine . Stones aggregates of 10 mm to 12.5 mm are put in cylinder. Stone …
Impact Value (IV/HMH) for the 10 kg (22 lbm) hammer or Heavy Impact Value (IV/H) for the 20 kg (44 lbm) hammer. 5. Significance and Use 5.1 Impact Value, as determined using the standard 4.5 kg (10 lbm) hammer, has direct application to design and con-struction of pavements and a general application to earthworks
Sampling for Crushing Test of Aggregate. For the Aggregate crushing value test, an aggregate sample passing through a 12.5 mm IS sieve and retained on a 10mm IS sieve is selected and dried to a temperature of 105 ºC to 110 ºC then cooled to room temperature. To fill the cylindrical measure mold about 6.5 kg of a sample of aggregate is sufficient.
Designation (Number): B.S. 812: Part 112: 1990. Scope: -Testing coarse aggregates for resistance to Impact Aggregates: -combination of sand, gravel, crushed stone, or other material of mineral composition-Natural aggregates taken from quarries (natural deposits)-Manufactured aggregates include blast furnace slag, clay and slate etc. Aggregate …
This characteristic is measured by impact value test. 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. ... 10 PRECAUTIONS 1. To wear safety shoes & goggles at the time of testing. 2. Before testing, machine should be properly checked. 3 ...
[19,20,21,22,23] Kwek and Awang (2018) [19] Water The aggregate impact value test determines the aggregate's resistance to sudden loading [24], which may differ from the resistance to ...
The aggregate impact value is the proportion of the sample that passes a 2.36 mm sieve after the hammer impacts. European Standards will not contain the 10 per cent fines test or the aggregate impact value test (although a different impact test, the …