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
Aggregate Impact Value Calculations The ratio of the weight of fines formed to the total sample weight in each test shall be expressed as a percentage, the result being recorded to the first decimal place. Aggregate Impact Value …
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 …
From the experiment, we get the value is 21% and 9 % less than the requirement concrete used for wearing surface such as road work which is 30 %. Aggregate physical property must lower Aggregate Impact Value, AIV because is tougher and resistance to crushed. We can conclude that the aggregate been used are medium toughand resistant to be crash.
The aggregate impact value gives a relation measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates differs from …
AGGREGATE IMPACT VALUE APPARATUS Used to determine the impact value of aggregates and select them for a given application. The machine has a trip-action hammer release, blow counter device and a built-in operator safety device. Manufactured in heavy duty form with hardened steel surfaces for minimum wear.
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 …
To determine the aggregate impact value in the laboratory. 2. Introduction. Impact value of an aggregate is the percentage loss of weight particles passing 2.36mm sieve by the application …
Ratio of Impact Value = (W2/W1) x 100 This test must be done at least for two samples. The average value of the two samples is the Impact Value of Aggregate. Lab Test Report Format …
5 The ' Aggregate Impact Value' is the mean of two observations, rounded to a nearest whole ...
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 compressive load. 2.Apparatus Required Fig. 1: Balance Balance should be accurate upto 1 g Fig. 2: Sieves Seives required are 12.5, 10.0 and 2.36 mm Fig. 3: Impact ...
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 sieve to the total weight of the sample expressed as a percentage.
The aggregates used for surface dressing may have the absorption values between 0.1 to 2.0 percent.on the other hand,they may posses a value of 4.0 percent when they are used in base course. generally 0.6% absorption value is considered to be …
The values are 19.64% and 20% respectively. The mean value from these 2 observations is 20%. This is the actual aggregate impact value Aggregate impact value Classification <10% Exceptionally strong 10% - 20% strong 20% - 30% satisfactory >35% weak Table 1 Table 1 shows what does the aggregate impact value represents.
5 Aggregate Impact Value is the ability of aggregates that resist sudden impact or shock load on ...
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 …
The method of aggregate test specifies the procedure for determining the aggregate impact value of coarse aggregate. Aggregate impact value is used to classify the stones in respect of their …
aggregates will be subjected to impact after passing through a speed breaker or when driving on an uneven road. From the data, impact value for sample 1 is the lowest which is 13% while for sample 2 and 3 is 15% and 15% respectively to each other. These three samples is …
OBJECTIVE For determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. Aggregate impact value test gives an indication of ...
The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact, which in some aggregate differs from its resistance to a slow compressive load. The test sample consists of aggregate the whole of which passes a 12.5 mm sieve and is retained on a 10 mm sieve.
Aggregate Impact Value (AIV) Testing Apparatus Standards BS 812:112 The Aggregate Impact Value Testing Apparatus, meets with BS 812, it is robustly designed to determine the Aggregate Impact Value (AIV) of aggregates …
<10% = Strong Aggregate, It can be used in any type of construction work. 10 to 20% = Exceptionally Strong aggregate, Used in general construction work. 20 to 30% = Slightly Weak aggregate, used in Road Work. 30 to 40% = More Weak aggregate, Used at side purpose. More than 40% = Weakest, Not used as a aggregate Tags:
General description The Aggregate Impact Value machine has been developed for determining the impact value of aggregates. Manufactured from plated steel against corrosion, a counter fitted to the machine automatically records the …
What is Aggregate Impact Value? The aggregate impact value is defined as a relative measure of the resistance of an aggregate to sudden shock or impact, which (in some aggregates) may differ from its resistance to a slow compressive load. What is Aggregate Impact Value Test? The aggregate impact value test is an important test of aggregates.
Calculations 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 Results AIV (%) Quality < 10 Exceptionally strong 10-20 Strong 10-30 Satisfactory
Calculations: Suppose weight of the Total aggregate samples in the cylindrical mould ( which passed through 12.5 mm Sieve and retained on 10 mm Sieve) = W1 Let weight of the crushed aggregates (Which pass through 2.36 mm IS Sieve) = W2 Impact value of the aggregates (%) = W2/W1 *100 Results: Aggregate Impact Value = %
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 – 12.5mm, 10mm and 2.36mm, A cylindrical metal …
Aggregate impact value is used to classify the stones in respect of their toughness property as indicated below: <10% Exceptionally strong 10-20% Strong 20-30% Satisfactory for road surfacing 35% Weak for road surfacing The aggregate impact value should not normally exceed 30% for aggregate to be used in wearing course of pavements.
For aggregates used for concreteothet than for wearing surfaces, the aggregate crushing value shall not exceed 45 percent, according to the ISS. However aggregate crushing values have not been specified by the IRC for …
Aggregate Impact Value = W B W A ×100 W B W A × 100 Where, W A is Weight of oven-dried sample W B is Weight of fraction passing through 2.36-mm IS Sieve Reporting of Results The mean of the two results shall be reported to the nearest whole number as the aggregate impact value of the tested material. Specifications: Aggregate Impact Values
Aggregate impact value test experiment charith98 Objective Amirul Jamil DETERMINATION OF AGGREGATE IMPACT VALUE. Sayed Sajid H.Zidani Experiment no 02 crushing value Sayed Sajid H.Zidani Aggregate …
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.
5 The aggregate impact value is a measure of resistance to sudden impact or shock, which may ...
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. …
Put this in the cup in three layers while tamping 25 times. - Weigh the aggregate with cup. Now fill the cup to the brim and further give 15 blows. - Take a 2.36mm sieve and pass the impacted aggregate Note B and A …
Calculations 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) = …