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Aggregate Crushing Value Apparatus Make LabTek Model SL AG 00 Origin India Standards IS 2376 PART IV BS 812 111 Specification The Aggregate Crushing Value ACV test set provides a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load
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Standards Description 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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ratio of the weight of fines formed to the total sample weight in each test shall be expressed as a percentage the result being recorded to the first decimal place aggregate crushing value ba x 100 where a weight of ovendried sample b weight in g of fraction passing through mm is sieve aggregate crushing value test
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The aggregate crushing value is a value which indicates the ability of an aggregate to resist crushing The lower a figure the stronger the aggregates that is the greater its ability to resist crushing THEORY Granular base layers and surfacing are subjected to repeated loadings from truck tires and the stress at the contact points of
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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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The strength of coarse aggregates is assessed by aggregates crushing test The crushing value provides a relative measure of resistance to crushing under a gradually applied compressive load To achieve a high quality of pavement aggregate possessing low aggregate crushing value should be preferred
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ratio of the weight of fines formed to the total sample weight in each test shall be expressed as a percentage the result being recorded to the first decimal place Aggregate Crushing Value = B/A X 100 where A = weight of oven dried sample B = weight in g of fraction passing through mm IS sieve Aggregate Crushing Value Test
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Published test results on the properties of quarry pro duced limestone aggregates in Istanbul are limited and confined to a few generalized ranges of values Arioglu and Manzak 1991 Manzak et al 1996 Although it is known that most of the quarries produce aggregates suitable for concrete no systematic laboratory testing had been car
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Procedure for crushing strength of aggregate Before testing the aggregate should be in surface dry can achieve the dry condition of aggregate by placing aggregates in an oven for 4 hours at 100 degree Celcius The aggregates passing through and retained on 10mm IS sieves are selected for finding aggregate crushing strength
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Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates Details Enquiry Aggregate Impact Tester With Blow Counter
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Aggregate Impact Value Calculations The ratio of the weight of fines formed to the total sample weight in each test shall be expressed as a percentage the result being recorded to the first decimal place Aggregate Impact Value Aggregate Impact Value = B/A 100 where A = weight of oven dried sample Aggregate Impact Value
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Procedure of Aggregate Crushing Value Take a sample of aggregates by sieving through and retained on 10mm The aggregate shall be tested in dry surface conditions If dried by heating the period of drying shall not exceed 4 hours and temp shall be 100 110 deg C
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Impact value of an aggregate is the percentage loss weight of particles passing 2 by the application on load by mean of 15 blows of standard hammer and drop under specified test condition The aggregate impact value gives a relation measure of the resistance of an aggregate to sudden shock or impact which in some aggregates differs from
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number Report the mean as the aggregate crushing value unless the individual results differ by more than times the mean value In this case repeat the test on two further specimens calculate the median of the four results to the nearest whole number and report the median as the aggregate crushing value
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Take millimeter sieve and sieve the impact aggregate through it Now take a bowl and measure its weight X Put the passed dust of aggregate through sieve into a bowl Take the weight of the bowl again with the aggregate sample dust Y Calculate the weight of passed dust B = X Y
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Result Aggregate crushing value = 20% Result Analysis The value is higher when more percentage of aggregates crush and break into smaller pieces which indicates the aggregates are of a lower quality Aggregate crushing value < 45% for aggregates used for concrete for non wearing surfaces and <25% for wearing surfaces like runways and roadways
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Both chemical and physical testing can be performed by BMRTD laboratories Automatic Sieve Shaker for sieve analysis of aggregate Oven drying of aggregates for Water absorption test Point load apparatus for testing rock specimens Aggregate Impact Value Test of coarse aggregate Following Aggregate testing services can be received from BMRTD
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Laboratory test equipment for the Aggregate Impact Value AIV and the Aggregate Crushing Value ACV and Ten Percent Fines Value TFV are also available The Pendulum Skid Resistance Tester provides highway engineers with a method of checking the resistance of wet and dry surfaces to slipping and skidding both in the lab and insitu
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2024 4 9 Aggregate crushing value lab report pdf AIM To determine the crushing value of certain road aggregates to assess the adequacy of aggregates for use in different types of road pavements APPROACH The apparatus according to IS 2386 1963 Part IV consists of Te test mold an open steel cylinder of cm of diameter with base plate
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Impact Value This test helps in determining the value which indicates the ability of an aggregate to resist crushing The lower the figure the stronger the aggregate the greater its ability to resist crushing Test Method IS 2386 P 4 1963 ASTMC 131 2024 Lightweight Pieces
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Aggregate crushing value is one of the major mechanical properties required in a road stone The aggregate crushing value provides a relative measure of the resistance of sample aggregate to crushing under a gradually applied compressive load Crushing value is a measure of the crushing strength of the aggregate
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Aggregate Crushing Value Test Apparatus ₹ 8 000/ Set Get Latest Price Height 130 to 140mm Internal diameter 150mm Length Tamping Rod 16mm dia x 450 to 600mm Metal Measure height 110mm internal dia x 180mm Product type Cylindrical Cell Thickness 200 to 230mm square x 6mm
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Aggregate crushing Test procedure Oven dry the aggregates Firstly sieve the aggregate using Indian standard sieves Then collect the specimen passed through mm and retained on a 10mm sieve Thus is the test sample of aggregate Then put the cylinder on the base plate and weight it W The aggregate sample should be filled in 3 layers
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Determination Of Aggregate Crushing Value Aggregates testing equipment Controls Waste polyethylene terephthalate as an aggregate in concrete May 3rd 2024 Section Sub Section Test Standard Document Name Title AGG AGG Lab Agg Crushing Value BS 812 110 1990 Testing Aggregates Methods for Determination of Aggregate Crushing Value ACV
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The average value of the two samples is the Impact Value of Aggregate Lab Test Report Format Conclusion Average of Impact Value of Aggregate = % Now the tested aggregates are passed to be used in construction work The recommend aggregate Impact value is given in the below table Test Illustration Video Video Courtesy NCTEL
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This percentage is known as a crushing value of aggregate This percentage should not exceed 30% of the total weight of aggregate taken for the test The aggregate crushing value test result should not be more than 30 % for the concrete used for roads and pavements and in case of other structures it may be permitted up to 45% c Standard
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Aggregate Impact Value AIV Testing Apparatus Standards BS 812 112 The Aggregate Impact Value Testing Apparatus meets with BS 812 it is robustly designed to determine the Aggregate Impact Value AIV of aggregates which provides a relative measure of the resistance of an aggregate to sudden shock or impact
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Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates are subjected to a specified load under standardized conditions
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per cent material passing a specified sieve after crushing The procedure described in SABS Method 842 is followed Definition The 10 per cent Fines Aggregate Crushing Value is the force in kN required to crush a sample of 13 2 9 5mm aggregate so that 10 per cent of the total test sample will pass a 2 36 mm sieve 2 APPARATUS As in SABS
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