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The ‘ aggregate crushing value test `gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Aggregate crushing value is defined as the percentage by weight of the crushed (or finer) material obtained when the test aggregates are subjected to a specified load under standardized conditions, and the strength of the aggregate used in road …
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It is recommended that the crushing value of aggregate should be less than30%. If it is more than 30 % then 10% finer aggregate is suggested to use. The aggregate whose crushing value is less than 30% can be used for cement concrete road. The aggregate whose crushing value isless than 40…
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The crushing value of aggregates is measured in the ratio between the crushed aggregates, obtained from the IS sieve 2.36mm and the weight of the dried aggregate sample. At least three samples should be tested from the same batch and average value to get accurate results. …
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Sampling for Aggregate Crushing Value Test: For theAggregate crushing value test, anaggregatesample passing through 12.5 mm IS sieve and retained on 10mm IS sieve is selected and dried to a temperature of 105 ºC to 110 ºC then cooled to room temperature. To fill the cylindrical measure mould about 6.5 kg of a sample ofaggregateis sufficient.
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May 05, 2010· Calculation of Aggregate Crushing Value. The ratio of weight of fines formed to the weight of total sample in each test shall be expressed as a percentage, the result being recorded to the first decimal place. Aggregate crushingvalue = (W2 x 100) / (W1-W) W2 =Weight of fraction passing through the appropriate sieve. W1-W =Weight of surface dry sample.
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The crushing value of aggregates is measured in the ratio between the crushed aggregates, obtained from the IS sieve 2.36mm and the weight of the dried aggregate sample. At least three samples should be tested from the same batch and average value to get accurate results. …
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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 – 12.5mm, 10mm and 2.36mm Procedure to determine Aggregate Crushing Value
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Aggregate Crushing Value = W B W A ×100 W B W A × 100. Where, W A is weight of surface-dry sample. W B is weight of fraction passing the appropriate sieve. Reporting of Results. The mean of the two results shall be reported to the nearest whole number as the ‘aggregate crushing value’ …
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May 22, 2020· The aggregate crushing value should not be more than 45% for aggregate used for concrete other than the wearing surfaces. 30% for concrete used the surfaces such as runway, roads and air field pavements.
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May 27, 2020· aggregate Crushing value= (B/A)*100 Where B is Termed as the weight of fraction passing 2.36 mm IS sieve A is Termed as the weight of surface dried sample taken in a mold. The aggregate crushing value should not be more than 45% by weight.
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The aggregate crushing value is defined as the ratio of the weight of fines passing through specified IS (here 2.36mm sieve) to the total weight of sample expressed in percentage. W1= Weigh of the total aggregates (Wa-We) W2= Weigh of aggregates passing through 2.36mm IS sieve. Aggregate crushing value= (W2 / W1) × 100
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The aggregate crushing value (ACV) provides relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Two versions available: 150 (standard) and 75 mm dia. The apparatus comprehend cylinder, plunger, base plate, tamping rod and measure.
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May 08, 2013· For determination of the aggregate crushing value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve.
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. the design constituents, . thecrushingstrength of theaggregatecan be a limiting factor of Concrete . . design resulted in a mix ratio of 1:2 . used for thecrushing teston the con; Theaggregate crushing valueis avaluewhich indies the ability of anaggregateto resistcrushing.
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The aggregate crushing value provides a relative measure of the resistance of an aggregate to crushing under gradually applied crushing load. The aggregate crushing value test is a useful guide when dealing with aggregates of unknown performance, particularly when lower strength is suspected.
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The aggregate crushing value is a numerical index of the resistance of an aggregate to crushing under a gradually applied compressive load. It is expressed as the percentage by mass of the crushed (or finer) material obtained when the test sample is subjected to a specified load under standard conditions.
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Impact andCrushing Value Aggregate Crushing Value(ACV) Sets. UTA-0630Aggregate Crushing Value(ACV) Set Ø 150 mm BS. UTA-0640Aggregate Crushing Value(ACV) Set Ø 75 mm BS. TheAggregate Crushing Value(ACV)TestSet measures how resistant anaggregateis, when being crushed under a gradually applied compressive load.
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Theaggregate crushing valueis a numerical index of the resistance of anaggregatetocrushingunder a gradually applied compressive load. It is expressed as the percentage by mass of the crushed (or finer) material obtained when thetestsample is subjected to a specified load under standard conditions.
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TheAggregate Crushing Value(ACV)TestSet provides a relative measure of the resistance of anaggregatetocrushingunder a gradually applied compressive load. Each set consists of steel cylinder, plunger, base plate, cylindrical measure and tamping rod. All parts of the apparatus are powder coated or galvanized steel, heat treated and ground ...
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BS 812 part 110 describes a method to determine theaggregate crushing value(ACV) which gives a relative measure of thecrushingresistanceof aggregateunder an increasing compressive load.The method is applicable to aggregates passing a 14.0 mmtestsieve and retained on a 10.0 mmtestsieve.
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. the design constituents, . thecrushingstrength of theaggregatecan be a limiting factor of Concrete . . design resulted in a mix ratio of 1:2 . used for thecrushing teston the con; Theaggregate crushing valueis avaluewhich indies the ability of anaggregateto resistcrushing.
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Impact andCrushing Value Aggregate Crushing Value(ACV) Sets. UTA-0630Aggregate Crushing Value(ACV) Set Ø 150 mm BS. UTA-0640Aggregate Crushing Value(ACV) Set Ø 75 mm BS. TheAggregate Crushing Value(ACV)TestSet measures how resistant anaggregateis, when being crushed under a gradually applied compressive load.
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Testonaggregate. Any Concrete work before must beTestonaggregatebecause of sure working quality of Concrete. Difference type oftestno aggregates. as per below tests point outof aggregatetests. 1. Samplingof AggregateTests. 2.Aggregate Crushing Value
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Nov 07, 2020· Thecrushingstrength oraggregate crushing valueof a given roadaggregateis found out as per IS-2386 Part- 4. Theaggregate crushing valueprovides a relative measure of resistance tocrushingunder a gradually applied compressive load. To achieve a high quality of pavementaggregatepossessing lowaggregate crushing valueshould be preferred.
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Aug 11 2020 · It is recommended that thecrushing value of aggregateshould be less than 30 If it is more than 30 then 10 fineraggregateis suggested to use Theaggregatewhosecrushing valueis less than 30 can be used for cement concrete road Theaggregatewhosecrushing valueis less than 40 can be used for wearing surface...We are a professional mining machinery manufacturer, the main ...
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Note 1: A procedure for testing coarseaggregatelarger than 19.0 mm [3 / 4 in.] is covered inTestMethod C535. Thus coarse aggregates with a maximum size between 19 mm [3 / 4 in.] and 37.5 mm [1 1 / 2 in.] may be tested byTestMethod C535 orTestMethod C131/C131M.
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