From the data obtained and the average aggregate Impact Value Test (AIV) that was calculated by using formula given, it shows the value from the four samples is %. Based from the Aggregate Impact Standard, for the aggregate impact value of % which is in range 10% 20% is very strong for road surfacing.

Transcribed image text: c) Two coarse aggregates A and B obtained from different sources having an aggregate impact value (AIV) of 17% and 31% respectively. Based on the principle of the test and the AIV for both aggregates, determine which one aggregate is better in term of toughness.

DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) (BS 812112) 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 standardized manner, into an open steel cup.

the rules of aggregate crushing value test pdf. AGGREGATE TOUGHNESS/ ABRASION RESISTANCE AND DURABILITY/SOUNDNESS ... Apparatus for the aggregate impact test (Millard . ... Used to determine aggregate impact value. ... (AIV) APPARATUS BS 812112 AGGREGATE CRUSHING VALUE (ACV) TEN PERCENT FINES VALUE (TFV) BS 812 Standard test:

Aggregate Impact Value (AIV) is another index parameter that can be used to measure the hardness of the rocks or crushed stones. Both these LAAV and AIV tests indie the fracturing resistance of crushed rocks under impact loads. The objective of this research is to find out the relationship between AIV and LAAV of the best rock material,

Aggregate Impact Value = W1 W2 = Weight of fraction passing IS sieve. Results : The mean of the three results is reported as the AIV (Aggregate Impact Value.

Civil Engineering Aggregate impact value test Know More. Nov 30 2017 0183 32 Toughness is the property of material which indie its capacity which impact in sudden Tougher the aggregate more suitable for wearing surface such as road surface Lower the impact value stronger the aggregate again the impact these for good quality concrete aggregate with lower AIV Aggregate Impact Value is .

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 surfac Aggregate Impact Values and Aggregate Crushing Values are often numerically very similar, and indie similar aggregate strength properti Aggregate Impact Value; Test Specifiions:

· Toughness is the property of material which indie its capacity which impact in sudden. Tougher the aggregate more suitable for wearing surface such as road surface. Lower the impact value stronger the aggregate, again the impact these for good quality concrete, aggregate with lower AIV (Aggregate Impact Value) is prepared.

Hence, they can be acceptable as their Aggregate Impact value is less than 30%. Aggregate ImpactValues, (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. If the aggregates are weak, the stability of the pavement structure is likely to be adversely affected.

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 –, 10mm and, 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.

Aggregates Impact Test (AIV) Introduction: Impact value of an aggregate is the percentage loss of weight particles passing sieve by the appliion 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 ...

Aggregate Impact Value (AIV) Testing Apparatus . Aggregate Impact Value determines the impact value of aggregates. Aggregate Impact Value conforms to BS 812:112 and is supplied with measure tamping rod. Inquire Now; Aggregate impact and SlideShare. Aggregate impact and 1. 10 ...

· Aggregate impact value = (W1/W2)*100. Aggregates to be used for wearing course, the impact value shouldn't exceed 30 percent. For bituminous macadam the maximum permissible value is 35 percent. For Water bound macadam base courses the maximum permissible value defined by IRC is 40 percent. Also read: Impact Value Test Procedure of Aggregates. 4.

· Impact value of aggregate. According to the specifiions of the Ministry of Road Transport and Highway, if the water absorption of the aggregates determined as per IS 2386 PartIII is greater than 2%, the aggregates shall be tested for wet aggregate impact value (AIV). Therefore, the wet AIV (toughness) is determined as per IS 5640 .

Exp 4 Aggregate Impact Value Civil Engineers PK. 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 indie similar aggregate strength properties.

· The aggregate impact value is a calculation of the resistance to abrupt impact, bang or shock, which may vary from its resistance to steadily, applied compressive weight. Procedure: The test specimen includes the aggregates of size ranging from mm mm. Aggregates can be dehydrated by warming them at temperatue of 100110° C for a timeframe of 4 hours and spread to .

Bullas and West [4] reported the aggregate impact value did not, but the aggregate crushing value did separate suitable and unsuitable aggregate for bitumen macadam roadbase. Fookes, Gourley and Ohikere [5] recommended that combinations of physical tests such as impact, crushing and abrasion resistance be used to assess aggregate durability.

Aggregate Impact Value TestAug 27, 2009· Impact value of an aggregate is the percentage loss of particles passing 236mm sieve by the appliion or load by means of 15 blows of Engineering Aggregate impact value testNov 30, 2017· Toughness is the property of material which indie its capacity which impact in sudden Tougher the aggregate more suitable for wearing .