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 …
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The limits for impact value vary depending on the type of aggregate and its intended use. Here are some commonly used limits as per ASTM C131 and BS 812: Part 112: For base course and wearing course aggregates. Maximum impact value: 30%. Minimum impact value for heavy-duty concrete pavements: 20%.
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The Aggregate Impact Value (AIV) test is an essential procedure in civil engineering and construction to assess the resistance of aggregates against sudden impacts. This test helps determine the durability and suitability of aggregates for various construction applications. ... Conclusion; Test Apparatus and Materials. To perform the …
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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 …
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Procedure of Aggregate Impact value test. The test sample: normally aggregates sized 10.0 mm to 12.5 mm. the aggregates should …
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which is dependent on the aggregate's impact resistance. This degree is assessed by a sieving test on the impacted specimen and is taken as the aggregate impact value. 7.6.3 Sampling. The sample used for this test shall be taken in accordance with Chapter 2. 7.6.4 Equipment 7.6.4.1 Impact testing machine. The machine shall be of the general ...
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Calculate Aggregate Impact Value. 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 = 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 ...
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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. 2.
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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. 10 – 20. Very tough / Strong. 20 – 30. Good for pavement surface course.
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In conclusion, Aggregate Impact Value is an important test to assess the quality and suitability of coarse aggregates for road construction. It helps engineers and researchers …
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AIV REPORT aggregate impact value introduction aggregates used in road construction, should be strong enough to resist crushing under traffic wheel loads if the. Skip to document. ... -Aggregate Crushing Value Test. Abrasion Test; Soundness Test; CONCLUSION. …
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Aggregate impact value (AIV) is the percentage of fines produced from the aggregate sample after subjecting it to a standard amount of impact. It is the percentage loss of weight of particles passing 2 sieve by the …
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The LA abrasion test is the most widely used method for testing aggregate ... had a coefficient of determination (R 2) equal to or greater than 0.97 with the other testing grade (B) having an R 2 value of 0.88. In conclusion, despite having used aggregates from rocks of different types and sizes, and with varying characteristics, a strong ...
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Aggregate Impact Value. The test sample shall consist of aggregates the whole of which passes through ½ in B.S. test sieve and is retained on a 3/8 in B.S. test sieve. The aggregate comprising the test sample shall be dried in an oven for a period of four hours at a temperature of 100-110 °C and cooled.The measuring cup shall be filled about ...
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Article Name. Aggregate Impact Test Procedure for Determining AIV as Per IS 2386 Part-4. Description. The Aggregate impact test is used to determine the aggregate impact value (AIV), which provides a relative measure of the resistance of a coarse aggregate to sudden shock or impact. Lower Aggregate Impact values indicate aggregates that are ...
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The apparatus as per IS 2386 (Part-IV) 1993 consist of, Impact Testing Machine : A testing machine weighing 45 to 60 Kg and having a metal base with a heavy lower surface of not less than 30 centimetre in diameter. It is …
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Reference:-Aggregate impact value test IS Code is 2386 (Part 4) – 1963 PDF. Test Apparatus. Aggregate Impact Value Test | Impact Test of Aggregate | Impact Value | AIV Test 5. 1. Impact testing machine. 2. …
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The abrasion Test measures aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. This test is suggested by AASHTO T 96 or ASTM C 131: Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in Los Angeles Machine. The aggregates are used for the surface course of the …
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Conclusion. In the construction industry, the Aggregate Impact Value test is a critical tool for assessing the quality and suitability of aggregates for road …
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Aggregate impact value test is a method to measure the resistance of coarse aggregates to sudden impact loading. It is commonly used in civil engineering projects to assess the quality and strength of aggregates for pavement and road construction. ... conclusion. By conducting a comprehensive fine aggregate test list and …
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The Aggregate Impact Test, also known as the Aggregate Impact Value (AIV) Test, is an important procedure used to determine the resistance of aggregates to. ... In conclusion, …
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In conclusion, Aggregate Impact Value is an important test to assess the quality and suitability of coarse aggregates for road construction. It helps engineers and researchers to select the most appropriate aggregates, considering their durability and resistance to impact, to ensure the longevity and safety of roads.
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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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4. The weight of material comprising the test sample shall be determined (Weight A) and the same weight of sample shall be taken for the repeat test. 5. The cylinder of the test apparatus shall be put in position on the base plate and the test sample added in thirds, each third being subjected to 25 strokes from the tamping rod.
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The aggregate samples were subjected to various mechanical aggregate tests, primarily the aggregate crushing value (ACV) (BS 812-110:1990) test. A new index, the aggregate crushing potential (ACP ...
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The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock ... Fig. 2: Sieves Seives required are 12.5, 10.0 and 2.36 mm 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 ...
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In the Aggregate impact value test, a small portion of coarse aggregates having a size range between 10 to 12.5 mm, is confined in a 75 mm diameter cylindrical metal measure and subjected to 15 ...
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The Aggregate Impact Value (AIV) test is a common procedure used to assess the resistance of aggregates to sudden impact or shock, reflecting their durability and toughness in construction ...
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The aggregates crushing value test should be performed as per IS code 2386 Part IV. First, fill the sample aggregate with one-third of the cylindrical measure in three layers. Each layer should be tamped 25times freely. After filling the sample aggregate, weigh and record it as W1. Now fill the aggregate in the mould along with the plunger on top.
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Test method. The procedure for conducting an Aggregate Impact Test (AIV) is as follows: Prepare the test sample by selecting aggregates sized between 10.0 mm …
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