Aggregate impact and – SlideShare. 8 Feb 2012 … 10-20% Strong 10-30% Satisfactorily for road surfacing; > 35% Weak for road surfacing Chief advantage of aggregate impact test is that test …. » More detailed.

Aggregate Test. Coarse Aggregate play an important role in construction. Aggregate is one of main constituent of concrete which is widely used in building construction. There are different aggregate test available to check propeties and quality of any aggregate sample.

Conclusion on the aggregate impact value Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Conclusion on the aggregate impact value, quarry, aggregate, and different kinds of minerals.

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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 Indian Standard CODE IS 2386 (Part IV) – 1963 is used for ...

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 …

The strength of coarse aggregates is assessed by aggregates impact test. The aggregate impact value provides a relative measure of resistance to crushing under a gradually applied compressive load. To achieve a high quality of pavement, lower aggregate impact value should be preferred. Toughness is the property of a material to resist impact.

UTA-0650 Aggregate Impact Value Testing Apparatus is used to determine the Aggr...

Online PDF Related to British Standard Testing Aggregates Aiv. Get Access British Standard Testing Aggregates AivPDF and Download British Standard Testing Aggregates Aiv PDF for Free. Aggregates 101 - Common Aggregates In PA Aggregates 101 - Common Aggregates In PA Aggregate Sieves Used To Separate Material By Size (gradation).

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.

Procedure. Step 1 – First, the aggregate sample sieve through 12.5mm sieve and collect it which is retained in 10 mm sieve. Step 2 – Now, the sample should be dried through the oven up to 4 hours at 100 deg to 110 deg. Step 3 – Then, the aggregate sample should be filled in the metal cup by 3 layers. Each layer should be tamped 25 times by the tamping rod.

The aggregate impact test is carried out to evaluate the resistance to impact of aggregates. Aggregates passing 12.5 mm sieve and retained on 10 mm sieve is filled in a cylindrical steel cup of internal dia 10.2 mm and depth 5 cm which is attached to a …

Aggregate Impact Value Test Procedure as per IS 2386 Part-4 (1963) with Lab Report, Apparatus List, Formula | AIV Test ... The advantages of aggregates impact value test are that the apparatus and procedure of the test are simple. With this test, we can obtain the resistance and impact of aggregates (stones) even in field condition. ...

the whole ofthe test sample placed in it and compacted IJy a single tamping of25 strokes of the tamping rod. 4.3 The hammer shall be raised until its lower face is 380 rom ahove the upper surface ofthe aggregate in the cup, and aJlowed to fall freely on to the aggregate. The test sample shall be subjected to …

Strength of aggregate is evaluated in laboratory by Aggregate Crushing Value (ACV) test and Aggregate Impact Value (AIV) test after each generation of recycling.

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 cooled.The measuring cup shall be filled about one-third with the ...

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, i.e. a steel cylinder, falling a set height, a prescribed number of times, onto an amount of aggregate of standard size and weight retained in ...

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 …

Aggregate Impact Value Testing Apparatus AIV is used to determine the aggregate impact value which provides a rela-tive measure of the resistance of an aggregate to sudden shock or impact. The counter tted to the machine automati-cally records the number of blows delivered to the sample. ... Advantages of aggregate impact value test Products ...

Purpose of the test: The Impact value of an aggregate is the percentage loss of weight particles passing 2.36mm 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 ...

aggregates is 22.91%. Tab. 3 - Results of Aggregate Impact value (AIV) test. S/N AIV 1 AIV 2 AIV 3 AVERAGE AIV 1 22.91%% 23.00% 22.83% 22.91% Aggregate crushing value (ACV) test Granular base layers and surfacing are subjected to repeated loadings from truck tires and the stress at the contact points of aggregate particles can be quite high.

The advantages of aggregates impact test are that the test equipment and procedure are simple, and it can obtain the resistance and impact of stones even …

Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load. Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates are subjected to a specified load under standardized conditions.

Aggregates i mpact testing ... own inherent advantages and disadvantages. 6 Fracture Fracture: separation of a body into pieces due to ... Standard tests evaluated here are the Protodyakonov 's test and the AIV test (Aggregate Impact Value ) used for the

Aggregate impact value test gives an indication of aggregate's toughness property (i.e. property of a material to resist impact) Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. Aggregate impact value (%) Toughness Properties <10 Exceptionally tough / Strong 10 – 20 Very tough / Strong […]

Take a sample of aggregates by sieving through 12.5mm and retained on 10mm. The aggregate shall be tested in dry surface conditions. If dried by heating, the period of drying shall not exceed 4 hours and temp shall be 100-110 deg C. A sample shall be cooled down to room temperature before testing.

Aggregate having AIV % equal or greater than 35 % is considered bad to use in road construction. PURPOSE OF TEST: 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.

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 ...

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 14.0 mm test sieve and

This impact load can break aggregate into smaller pieces and which results in the failure of roads and pavements. Impact Test of Aggregate. It is the ability of aggregates that resist sudden impact or shock load on it. Also, it can be defined as the resistance of aggregate to failure by impact load is known as the Impact Test of Aggregate.

Crush samples having an impact value of 12.5% fall in the category of 10-20%, therefore, the aggregate test sample is classified as strong and can be seen in the table below. The aggregate impact value is useful for selecting the good aggregates for road construction. Aggregate appropriate for cement wearing course should have maximum AIV of 30%.

Research report 433 Abrasion resistance of aggregates in asphalt processed the results of all the test work and carried out a review of the draft report.Higgins Group: ... Benefits of the project . ..... (Standards Australia 1995b ), aggregate abrasion value, micro-deval (ASTM International 2003), gyratory.