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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If it is more than 30 % then 10% finer aggregate is suggested to use. The aggregate whose crushing value isless than 30%can be used for cement concrete road. The aggregate whose crushing value is lessthan 40%can be used for wearing surface. This test must be done before it …
Get Price →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’ …
Get Price →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. …
Get Price →May 22, 2020· The aggregate crushing value should not bemore than 45%for aggregate used for concrete other than the wearing surfaces. 30% for concrete used the surfacessuch as runway, roads andair fieldpavements.
Get Price →For the Aggregate crushing value test, an aggregate sample passing through12.5 mm IS sieveandretained on 10mm IS sieveis selected and dried to a temperature of 105 ºC to 110 ºC then cooled to room temperature. To fill the cylindrical measure mould …
Get Price →Calculation of aggregate crushing value. 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 ISsieve. Aggregate crushing value=( W2 / W1 ) × 100
Get Price →May 05, 2010·Aggregate Crushing Value TestApparatus. A steel cylinder 15 cm diameter with plunger and base plate. A straight metal tamping rod 16mm diameter and... Sampling ofAggregates.Coarseaggregatepassing 12.5mm IS sieve and retained on a10mm IS sieve are selected and heated... Procedure ofAggregate...
Get Price →figureofaggregate crushing value test Aggregate Crushing ValueCalculatorTeston course and .Calculate Aggregate Crushing ValueThe ratio of the weight of fines formed to the total sample weight in eachtestshall be expressed as a percentage the result being recorded to the first decimal placeAggregate Crushing ValueW B W A × 100 Where W A is weight of surfacedry sample
Get Price →Aggregate crushing value = (W1/W2)*100 Recommended Values: In aggregate crushing test, if aggregate crushing value is less than 10, it signifies an exceptionally strong aggregate.
Get Price →May 22, 2020· The aggregate crushing value= B/A*100 . Where, B is weight of fraction passing 2.36mm sieve ; A is weight of surface dry sample taken in mould. Note. 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.
Get Price →Aggregate crushing value teston coarse aggregates gives a relative measure of the resistance of anaggregate crushingunder gradually applied compressive load. Coarseaggregate crushing valueis the percentage by weight of the crushed material obtained whentestaggregates are subjected to a specified load under standardized conditions.
Get Price →Aggregate crushing value < 45% for aggregates used for concrete for non-wearing surfaces and <25% for wearing surfaces like runways and roadways. Discussion:1. Sample can expel from the mound because the mound not closed. Mound can affect the error measuring reading.
Get Price →Calculate Aggregate Crushing Value 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 Crushing Value W B W A × 100 Where W A is weight of surfacedry sample. Aggregate Crushing Value Test Procedure and Result
Get Price →Aug 15, 2019· You can refer this procedure to know more in detail about, how to performcrushing value test.Aggregate Crushing Value- Civil4M Ref : IS : 2386 (Part IV) Purpose : To determine thecrushing valueof aggregates.
Get Price →Calculate aggregate crushing valuethe ratio of the weight of fines formed to the total sample weight in eachtestshall be expressed as a percentage the result being recorded to the first decimal placeaggregate crushing valuew b w a 100 where w a is ,Figure of aggregate crushing value test.
Get Price →• Aggregate Crushing Value, % = (B / A) x100 • The mean of the two results shall be reported to the nearest whole. Also read : Core cutter method. Impact Value of Coarse Aggregate
Get Price →The Los Angeles (L.A.) abrasiontestis a commontestmethod used to indicateaggregatetoughness and abrasion characteristics.Aggregateabrasion characteristics are important because the constituentaggregatein HMA must resistcrushing, degradation and disintegration in order to produce a …
Get Price →Aggregate Crushing Value Test. Busva Gopal. Loading Preview. Download pdf × Close Log In. Log In with Facebook Log In with Google. Sign Up with Apple. or. Email: Password: ...
Get Price →The load shall be released & the whole of the test sample shall be removed from the cylinder and sieve with 2.36mm IS Sieve. The passing sample shall be weighed ( W2, gms). Aggregate crushing Value = (W2/W1) x 100. Read more: Method Abrasion value test; Method of Impact value test
Get Price →Aggregate Crushing Value Test– DetermineAggregate... Coarseaggregate crushing valueis the percentage by weight of the crushed material obtained whentestaggregates are subjected to a specified load under standardized conditions.Aggregate crushing valueis a numerical index of the strength of theaggregateand it … Get Price
Get Price →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 ...
Get Price →General 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. Cylinder, plunger and base plate are made from special alloy steel, hardened to 650 HV (57,8 …
Get Price →Calculate aggregate crushing value 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 crushing value w b w a 100 where w a is,Figure of aggregate crushing value test. Get Price
Get Price →Ten percent fines value is a measure of the resistance of aggregate crushing subjected to loading and it is applicable to both weak and strong aggregate. Fine aggregates are defined as those passing 2.36mm sieve. The test aims at looking for the forces required to produce 10% of fine values (i.e. weight of fines aggregates/weight of all aggregates = 10%).
Get Price →TestMethod: IS: 2386 (P-1) 1963. ImpactValue: Thistesthelps in determining thevaluewhich indicates the ability of anaggregateto resistcrushing. The lower thefigurethe stronger theaggregate, i.e. the greater its ability to resistcrushing.TestMethod: IS: 2386 (P-4) …
Get Price →Feb 03, 2012· The strength of coarse aggregates is assessed by aggregatescrushing test. Thecrushing valueprovides a relative measure of resistance tocrushingunder a gradually applied compressive load. To achieve a high quality of pavement,aggregatepossessing lowaggregate crushing valueshould be …
Get Price →Dec 19, 2014· (vi) Two tests should be conducted. 7. CALCULATION: • Aggregate crushing value = B/A x 100% • The result should be recorded to the first decimal place and the mean of the two results reported. • To achieve a high quality of pavement, aggregate possessing low crushing value should be preferred.
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