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· This video (Animation, Animated Video) explains how to determine aggregate impact value (Aggregate Impact Test). Aggregate test || Coarse aggregate Test (Civ
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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%.
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AGGREGATE IMPACT VALUE TEST Object of the Experiment To evaluate the toughness of a stone the resistance of the aggregates to fracture under repeated impacts is called Impact Test. This test is done to determine the aggregate impact value of coarse aggregate as per IS 2386 (PartIV) 1993.
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The aggregate impact value gives a relative measure of the resistance of the aggregate to sudden shock or impact. The particular purpose which an aggregate is meant to serve requires the aggregate to have a particular strength which is usually stated in the specification. This test
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· In this video, we will see the procedure of determining aggregate impact value as per IS 2386 PART4.
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How do you calculate the aggregate impact value? The impact value is measured in the ratio between the sieved aggregate of 10mm aggregates. The aggregate impact value test will be conducted as per the Indian Standard Code IS code 2386 Part 4. Let''s start
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Procedure The aggregate sample: The material for the standard test consists of aggregates sized mm to mm . The aggregates must be in surface dry condition before testing. The aggregates may be dried by heating at 100 oC – 110 o C for not mor than 4 hours and cooled to room temperature before testing, if necessary. Sieve the material through mm and 10 mm IS sieves. The
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Procedure. The test sample consists of aggregates passing 14 mm and retained on 10 mm sieve. Wash the sample and dry at 100 to 110 °C for four hours and cool to room temperature ; Fill the cylindrical measure with the aggregate sample and tamp with 25 blows of tamping rod. Weigh and record the mass of the sample (M1) Transfer the sample to the machine cup and compact it by applying 25 strokes
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their disintegration due to impact. 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. 3. APPARATUS The apparatus of the aggregate impact value test as per IS: 2386 (Part IV) – 1963
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· APPLICATIONS OF AGGREGATE IMPACT VALUE The aggregate impact test is considered to be an important test to access the suitability of aggregates as regards the toughness for use in pavement construction. It has been found that for majority of aggregates, the aggregate crushing and aggregate impact values are numerically similar within close limits.
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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 cool down.
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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 strokes of the tamping rod.
WhatsAppعرض المزيدImpact, 10% Fines Crushing TestsQuarry plant such as crushers, screens, conveyors, etc. are all subject to wearand these crushing tests can indicate the magnitude of the problem for Aggregate Impact Value (SS 1974)1. The apparatus consists of a steel test mould with a falling hammer as shown in Figure 1. The hammer slides freely between vertical
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· Aggregate Impact Value Testing machine The test equipment and the test procedure are quite simple and it determines the resistance to impact of stone aggregates simulating field condition. This test can be performed even at construction site or at
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The test sample shall consist of aggregate the whole of which passes a mm IS Sieve and is retained on a 10 mm IS Sieve. The aggregate comprising the test sample shall be dried in an oven for a period of four hours at a temperature of 100 to 110°C and cooled.
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Procedure of Aggregate Crushing Value Test. Put the cylinder in position on the base plate and weigh it (W). Put the sample in 3 layers, each layer being subjected to 25 strokes using the tamping rod. Care being taken in the case of weak materials not to break the particles and weigh it (W1). Level the surface of aggregate carefully and insert the plunger so that it rests horizontally on the
WhatsAppعرض المزيد· The general test procedure of the aggregate impact value test is briefly described below. Objectives of Impact Test 1. To assess the suitability of the aggregate to
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Why to test Aggregate Impact Value? Toughness is the property of a material to resist impact. Due to traffic loads the road stone are subjected to the pounding action of impact and there is possibility of breaking into smaller pieces. The road stone should therefore be tough enough to resists fracture under impact. A test designed to evaluate the toughness of stones the resistance of the
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Procedure The aggregate sample: The material for the standard test consists of aggregates sized mm to mm . The aggregates must be in surface dry condition before testing. The aggregates may be dried by heating at 100 oC – 110 o C for not mor than 4 hours and cooled to room temperature before testing, if necessary. Sieve the material through mm and 10 mm IS sieves. The
4WhatsAppعرض المزيدProcedure of Aggregate Impact Value Test: Take test samples of aggregates passing through mm IS sieve and retained on 10 mm IS sieve. Dry theme in an oven for 4 hours at a temperature of 100 °C to 110 °C and then cool at room temperature.
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Aggregate Impact Value Test 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
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Procedure of Aggregate Impact Value Test: Take test samples of aggregates passing through mm IS sieve and retained on 10 mm IS sieve. Dry theme in an oven for 4 hours at a temperature of 100 °C to 110 °C and then cool at room temperature.
4WhatsAppعرض المزيد· How do you calculate the aggregate impact value? The impact value is measured in the ratio between the sieved aggregate of 10mm aggregates. The aggregate impact value test will be conducted as per the Indian Standard Code IS code 2386 Part 4. Let''s start with the experiment to understand the concept better.
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AGGREGATE CRUSHING VALUE This test helps to determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) – 1963. The apparatus used is Cylindrical measure and plunger, Compression testing machine, IS Sieves of sizes –, 10mm and . Procedure to determine Aggregate Crushing Value i) The aggregates passing through and retained on
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