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### Impact Test on Aggregates - GharPedia

Aggregate impact value (The value of aggregate impact test) = (W1/W2)*100. The value of aggregate impact test should not be more than 45% by weight of aggregates, used for concrete other than wearing surface. An impact value 35% is permissible for the bituminous macadam. Maximum permissible impact value for the water bound macadam is 40%.

Learn More### How to Find Aggregate Crushing Value and Its Test Procedure?

The aggregate crushing value test is a useful guide when dealing with aggregates of unknown performance, particularly when lower strength is suspected. To find out the performance of aggregates for various uses, 7 types of lab test are available. Also Read: Impact Test of Aggregates. Courtesy - Indiamart.

Learn More### PDF) RELATIONSHIP BETWEEN AGGREGATE CRUSHING VALUE

The results obtained show that ACV value for aggregates are 25.04%, 22.70%, 36.13%,and 37.89% for crushed granite, slag , hoggin (all-in aggregate), and river gravel respectively.

Learn More### PDF) DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) (BS 812

Scope: This Part of BS 812 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. Principle A test specimen is compacted, in a

Learn More### Aggregate Impact Test » Engineering Basic

Mar 21, 2018 · • Aggregate Impact Values, AIV’s, below 10 are regarded as strong, and AIV’s above 35 would normally be regarded as too weak for use in road surfaces. • Aggregate Impact Values and Aggregate Crushing Values are often numerically very similar, and indicate similar aggregate strength properties. Recommended Aggregate Impact Test Values

Learn More### PDF) Highway and Transportation Engineering Lab Manual

Weight of aggregate passing 2.36 mm I.S sieve, gm 3. Weight of aggregate retained on 2.36 mm I.S sieve after the test, gm 4. Aggregate Impact Value, × 100 % Table - 1-: Classification of aggregate based on the Aggregate Impact Value Clean and dry aggregate sample confirming to one of the grading A to G is used for the test.

Learn More### Aggregate Impact Value Test as per IS 2386 (Part-IV) 1993

Aggregate Impact Value Test as per IS 2386 (Part-IV) 1993. Theory and Scope. The property of a material to resist impact is known as toughness. Due to movement of vehicles on the road, the aggregates are subjected to impact resulting in their breaking down into smaller pieces. The aggregate should therefore have sufficient toughness to resist

Learn More### How to Determine the Aggregate Crushing Strength Value in

Calculation of aggregate crushing value. The aggregate crushing value is defined as the ratio of the weight of fines passing through specified IS (here 2.36mm sieve) to the total weight of sample expressed in percentage. W1= Weigh of the total aggregates (Wa-We) W2= Weigh of aggregates passing through 2.36mm IS sieve.

Learn More### 5 Aggregate Production - IN.gov

IMPACT CRUSHING Impact crushers may be used as primary, secondary, or tertiary crushers. Despite having a somewhat higher operating cost than other crushers, they tend to produce a more uniform particle shape. Impact crushers usually will benefit the aggregate better than compression crushers, and they may generate more fines.

Learn More### IS 2386-3 (1963): Methods of test for aggregates for concrete

the. aggregate which require to be assessed. Accordingly, the relevant test methods may be chosen from amongst the various tests covered in this standard. For the convenience of the user, the test methods are grouped into the following eight parts of Indian Standard Methods of Test for Aggregates for Concrete ( IS : 2386-1963 ):

Learn More### IS 2386-3 (1963): Methods of test for aggregates for

Is:2386(PartIll)-1963 2.2 Method I - Aggregate Larger than 10 mm 2.2.1 4 b! 4 4 4 f > g> Apparatus - The apparatus shall consist of the following: Balance -A balance or scale of capacity not less than 3 kg, readable and accurate to O-5 g and of such a type and shape as

Learn More### Determination of Aggregate Impact Value - Impact Test on

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. Procedure o f 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.

Learn More### PDF Aggregate Crushing Value

1.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 Crushing Value = (B/A) X 100 where A = weight of oven-dried sample B = weight in 'g' of fraction passing through 2.36 mm IS sieve. 6.Video Aggregate Crushing Value Test

Learn More### Aggregates of Concrete - SlideShare

Mechanical Prosperities of Aggregate :Mechanical Prosperities of Aggregate : Aggregate Impact ValueAggregate Impact Value • The aggregate impact value gives relative measure ofThe aggregate impact value gives relative measure of the resistance of an aggregate to sudden shock orthe resistance of an aggregate to sudden shock or impactimpact..

Learn More### Impact Value of Aggregate

3. reference. IS 2386(Part 4):1963 Methods of Test for Aggregates for Concrete- Mechanical Properties. Reaffirmed- Dec 2016 4. procedure. The test sample shall consist of aggregate the whole of which passes a 12.5 mm IS Sieve and is retained on a 10 mm IS Sieve.

Learn More### recommenderlab: A Framework for Developing and Testing

The aim of collaborative ﬁltering is to create recommendations for a user called the active user ua ∈ U. We deﬁne the set of items unknown to user ua as Ia = I \{il ∈ I|ral = 1}. The two typical tasks are to predict ratings for all items in Ia or to create a list of the best N recommendations (i.e., a top-N recommendation list) for ua

Learn More### PDF IS 2386-4 (1963): Methods of test for aggregates for

DETERMINATION OF AGGREGATE CRUSHING VALUE 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 of an aggregate to crushing under a gradually applied compressive load. With aggre-

Learn More### The requirements of AS 2758.1 - 2009

In general, the test procedures called for will be those cited in AS 2758.1. 3.2 Test Methods and their purpose 3.2.1 General Requirements (AS 2758.1 Section 7) Particle Density (Clause 7.1) and Water Absorption (Clause 7.3) The particle density test is performed by taking a sample of aggregate and determining its mass by displacing a mass of

Learn More### IMPACT VALUE OF AGGREGATE

Fig. 3: Impact Testing machine Weight of hammer is 13.5 to 14.0 kg and Height of Fall is 380±5 mm 3.Reference IS 2386(Part 4):1963 Methods of Test for Aggregates for Concrete- Mechanical Properties. Reaffirmed-Dec 2016 4.Procedure 1.The test sample shall consist of aggregate the whole of which passes a 12.5 mm IS Sieve and is retained on a 10

Learn More### PDF) DETERMINATION OF AGGREGATE IMPACT VALUE (AIV

Scope: This Part of BS 812 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. Principle A test specimen is compacted, in a

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