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Why do we use aggregate impact value test? The aggregate impact value test is done to test the compressive strength of aggregate when sudden and immediate impact force acted on it. It is expressed in percentage (%). It should be less …
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What is the aggregate impact value test? A relative measure of the resistance of aggregate due to the sudden shock or impact on it is called aggregate impact value. Based on the impact value, we can decide whether the coarse aggregate is suitable for construction or not.
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Need and scope: 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. The …
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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 …
WhatsApp: +86 18221755073
Let's embark on this informative journey to explore the world of Aggregate Impact Value and its pivotal role in the construction industry. Aggregate Impact Value Test Apparatus. The AIV test requires specific apparatus to ensure accurate results. The apparatus, as per IS: 2386 (Part IV) – 1963, consists of: 1. Testing Machine. Weighing 45 ...
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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.
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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 be used in the highway pavement. 2. To determine the aggregate impact value. Apparatus Required. 1. An impact testing machine weighing between 45kgs to 60 kgs with a metal base. 2.
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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 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.
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Features of Aggregate Impact Value Apparatus (AIV)Standard BS 812: Provides methods for the sampling and testing of aggregates from various sources, including natural and recycled materials, for use in construction. It covers procedures for determining the physical and mechanical properties of aggregates, such as particle size distribution, density, water …
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Apparatus required. Aggregate impact value machine whose weight should be between 45 kg to 60 kg. A cylindrical steel cup measuring the diameter of 75 mm and depth should be 50 mm. Another steel cup whose diameter should be 75 …
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Aggregate Impact Value (AIV) The apparatus has been designed in a particularly heavy duty form, with specially hardened steel surfaces for minimum wear. The assembly is heavily plated to ensure corrosion resistance and forms a rigid …
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The Impact Value of an aggregate is the percentage of fines produced when a sample of the aggregate is subjected to a standard amount of impact using a standardized hammer and cylindrical mould. A lower Impact Value indicates that the aggregate is more resistant to impact and is therefore considered to be of higher quality.
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AGGREGATE IMPACT VALUE APPARATUS. NF P18-574. Consisting of: A080-04 TEST FRAME ASSEMBLY; A080-03 CYLINDRICAL MOULD, dia 102x52 mm. Request information
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Need and scope: 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. The property of …
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
The apparatus of the aggregate impact value test consists of: A testing machine weighing 45 to 60 kg and having a metal base with a plane lower surface of not less than 30 cm in diameter. The level and plane concrete floor of a minimum of …
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Aggregate Impact Value on Coarse Aggregates Apparatus for Aggregate Impact Test The apparatus as per IS: 2386 (Part IV) - 1963 consists of: (i) A testing machine weighing 45 to 60 kg and having a metal base with a painted lower surface of not less than 30 cm in diameter. It is supported on level and plane concrete floor of minimum 45 cm thickness.
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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%; For bituminous macadam and bituminous concrete:
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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 be used in …
WhatsApp: +86 18221755073
The Impact Value of an aggregate is the percentage of fines produced when a sample of the aggregate is subjected to a standard amount of impact using a standardized hammer and cylindrical mould. A lower Impact Value indicates …
WhatsApp: +86 18221755073
This machine is used to deter-mine the aggregate impact value(AIV) which provides a relative measure of the resistance of an aggregate to sudden shock or impact. The machine is robustly designed and made from corrosion- resistant …
WhatsApp: +86 18221755073
Why do we use aggregate impact value test? The aggregate impact value test is done to test the compressive strength of aggregate when sudden and immediate impact force acted on it. It is expressed in percentage (%). It should be less for high impact bearing aggregate for pavement.
WhatsApp: +86 18221755073
Apparatus used in Impact test. The apparatus of the aggregate impact value test consists of: A testing machine weighing 45 to 60 kg and having a metal base with a plane lower surface of not less than 30 cm in diameter.
WhatsApp: +86 18221755073
Aggregate Impact Value (AIV) The apparatus has been designed in a particularly heavy duty form, with specially hardened steel surfaces for minimum wear. The assembly is heavily plated to ensure corrosion resistance and forms a rigid frame around the quick-release trigger mechanism, which ensures an effective free fall of the hammer when released.
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Apparatus Required. Impact Value testing machine; Electrical oven; Tamping rod; Weigh balance; IS Sieves -(12.5mm,10mm &2.36mm) The procedure of the test. Aggregate sample shall consists of particles passing on 12.5mm Sieve and retained on 10mm sieve.
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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. 2.Apparatus Required Fig. 1: Balance Balance should be accurate upto 1 g Fig. 2: Sieves Seives required are 12.5, 10.0 and 2.36 mm Fig. 3: Impact ...
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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 …
WhatsApp: +86 18221755073
The test sample: normally aggregates sized 10.0 mm to 12.5mm. the aggregates should be dried by heating at 100-110 0C for a period of …
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It is for determining the aggregate impact value and has been designed in accordance with IS:2386 (Part 4 ), IS:9377. The sturdy construction consists of a base and support columns to form a rigid frame work around the quick release trigger mechanism to ensure an effective free fall of the hammer during test. The free fall can be adjusted ...
WhatsApp: +86 18221755073
What is the aggregate impact value test? A relative measure of the resistance of aggregate due to the sudden shock or impact on it is called aggregate impact value. Based on the impact value, we can decide whether the coarse …
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