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The Aggregate Impact Value (AIV) test, outlined in IS 2386 Part IV, evaluates the impact resistance of aggregates. This is performed with an impact testing apparatus, using a specific procedure and sample preparation method. Aggregates acceptable for wearing surfaces in concrete should not exceed a 45% impact value and for bituminous concrete, 30%.
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The observations in the Impact Test are recorded, including the total weight of the dry sample (W1 gm), weight of portion passing the 2.36 mm sieve (W2 gm), and the calculated Aggregate Impact Value in percent.
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Aggregate impact value test gives an indication of aggregate's toughness property (i.e. property of a material to resist impact).. Aggregates to be used for wearing course, the impact value shouldn't exceed 30 per cent.. For bituminous macadam, the maximum permissible value is 35 per cent. For Water bound macadam base courses the maximum permissible value defined …
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This document describes a test method for determining the aggregate impact value (AIV) of aggregates, which provides a measure of their resistance to sudden shock or impact. The test involves compacting aggregate samples in a steel cup and subjecting them to 15 blows from a hammer. The crushed material is then sieved and the percentage passing a 2.36mm sieve is …
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The impact test on aggregates, also known as the Aggregate Impact Value (AIV) test, is conducted to determine the aggregate's resistance to sudden impacts or shocks. This test is essential for assessing the toughness …
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The aggregate impact test is used to evaluate the toughness of aggregates, the toughness of aggregate means the resistance to fracture from impact load or sudden dynamic load. ... (Aggregate, impact, value={W_2over W_1}times 100) Where W 1 = Original weight of the oven-dry sample. W 2 = Weight of the material passing 2.36 mm I.S. sieve ...
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[19,20,21,22,23] Kwek and Awang (2018) [19] Water The aggregate impact value test determines the aggregate's resistance to sudden loading [24], which may differ from the resistance to ...
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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. The test sample consists of …
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AGGREGATE IMPACT VALUE AIM :- To determine the aggregate impact value of coarse aggregates as per IS: 2386 (Part IV) - 1963. APPARATUS :- 1) Impact testing machine conforming to IS: 2386 (Part IV)- …
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Learn how to conduct an aggregate impact test to measure the resistance of aggregates to sudden impact. Find out the recommended values and classifications for different types of road construction.
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The document describes an experiment to determine the aggregate impact value of a given specimen through a standardized test procedure. Three samples were tested by subjecting aggregates retained between 10mm and 12.5mm sieves to 15 blows from a …
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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 toughness property as indicated below: <10% Exceptionally strong. 10-20% Strong. 20-30% Satisfactory for road surfacing. 35% Weak for road surfacing. The ...
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The Aggregate impact value indicates a relative measure of resistance of aggregate to impact load which has different effect than the resistance to gradually increasing compressive stress. A test designed to …
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Procedure of Impact Test. The procedure of the impact value test includes the following series of steps: 1. The aggregate samples of size 10mm to 12.5mm (passing through 12.5mm sieve and retained on 10mm sieve) are first taken and oven-dried at a temperature ranging from 100 degrees Celsius to 110 degrees Celsius for about four hours.
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The Aggregates Impact Value (AIV) Apparatus is used to determine the aggregate impact value which provides a relative measure of the resistance of an aggregate to sudden shock or impact. ... MORTAR STRENGTH, PHYSICAL …
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IS 9377 (1979): Specification for apparatus for aggregate impact value [CED 2: Cement and Concrete] IS I9377 - 1979 Indian Standard SPECIFICATION FOR APPARATUS FOR AGGREGATE IMPACT VALUE ( Second Reprint MARCH 10% ) UDC 620 ... IMPACT TESTING MACHINE 3.1 The general form and salient dimensions of machine shall be as ...
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This characteristic is measured by the 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. Procedure of Aggregate Impact Test The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating ...
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The test report shall contain the following additional information: a) sample identification and sample description; b) the condition in which the aggregate was tested, i.e. dry or soaked condition; c) the aggregate impact value (AIV) of the dry aggregate; d) the aggregate impact value of the aggregate in a soaked condition and the number of ...
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Here is a general methodology for conducting the Aggregate Impact Value test as per the Indian Standard: Impact testing machine: The machine should conform to IS: 2386 (Part IV)-1963. Metal hammer: Circular, about 75 …
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To evaluate the toughness of a stone i.e. 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 …
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The Aggregate Impact Value (AIV) test is a procedure conducted to determine the resistance of an aggregate to sudden impact or shock. This test is crucial in determining the quality and durability of aggregates for use in construction. In this article, we will discuss the complete procedure of conducting an AIV test, from the introduction to ...
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AGGREGATE IMPACT VALUE This test is done to determine the aggregate impact value of coarse aggregates as per IS: 2386 (Part IV) – 1963. 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...
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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. ... and allowed to fall freely on to the aggregate. The test sample shall be subjected to a total of 15 such blows each being delivered at an interval ...
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Read More: Aggregate Testing | 7 Test On Aggregates | Coarse Aggregate Test. Aggregate Crushing Value Test Result. For accurate test results conduct the test at least 3 times and take an average of 3 values. Aggregate Crushing Value Test Lab Report. Aggregate Crushing Value Limits for Road Pavement
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In this article, we will discuss the complete procedure of conducting an AIV test, from the introduction to the calculations at the end. The AIV test is a crucial test used to …
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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.
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3.2.4 heavy medium heavy impact value (IV/HMH), n—the IV derived from using a 10 kg (22 lbm) mass hammer 130 mm (5 in.) in diameter free falling 300 mm (12 in). 3.2.5 impact soil tester, n—testing apparatus used to obtain an IV of a soil. 3.2.6 impact value (IV), n—the value expressed in units of
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DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) (BS 812-112) 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 …
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resist 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. Apparatus: 1. Impact Testing Machine: Impact testing machine conforming to IS: 2386 (Part IV) -
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The test sample retained and passing on 2.36mm test sieve shall then be weighed. Calculate the weight of test sample passing 2.36mm sieve with the weight of whole test sample filled in the cup and report test results. Datasheet for aggregate impact value
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Two tests shall be made. 5. calculation. The ratio of the weight of fines formed to the total sample weight in each test shall he expressed as a percentage, the result being recorded to the first decimal place: Aggregate Impact Value = (B/A) X 100 where A = weight in g of saturated surface - …
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Aggregate Impact Test Procedure as Per IS 2386 Part-4: Equipment For Aggregates Impact Test: Aggregate Impact Testing machine: An Impact testing machine for aggregate comprising the following. The aggregate impact test …
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The impact value is calculated as the percentage of material passing the 2.36mm sieve relative to the total sample weight. A value between 10-20% is considered very strong and suitable for use in concrete and road construction. The results of testing three samples are reported, with an average impact value of 13.42% indicating very strong ...
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The aggregate impact value test is an important test of aggregates. It is done to obtain the resistance and impact of aggregates (stones). In this test a machine is used, which is called impact testing machine.
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Learn how to measure the resistance of aggregates to sudden impact or shock using a testing machine, a hammer, and a sieve. Find out the …
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Aggregate Impact Value = 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 …
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