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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 – 125mm 10mm and 236mm Procedure to determine Aggregate Crushing Value
Apr 24 2019 · Aggregate Crushing Value test required to know the resistance strength of coarse aggregate Aggregate Crushing Value must be satisfied with resistance to crushing under the roller during compaction If the aggregate are weak in resistance the stability of the pavement or structure is likely to be adversely affected
Learn MoreAggregate 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 construction is expressed by numerical index
Learn MoreThe 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
Learn MoreThe aggregate crushing value provides a relative measure of resistance to crushing under a gradually applied compressive load To achieve a high quality of pavement aggregates possessing low aggregate crushing value should be preferred
Learn MoreThe 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
Learn MoreCalculation of aggregate crushing value The aggregate crushing value is defined as the ratio of the weight of fines passing through specified IS here 236mm sieve to the total weight of sample expressed in percentage W1 Weigh of the total aggregates WaWe W2 Weigh of aggregates passing through 236mm IS sieve
Learn MoreMay 08 2013 · For determination of the aggregate crushing value of coarse aggregate which passes 125 mm IS sieve and retained on 10 mm IS sieve Reference Standard IS 2386 Part IV1963 Methods of test for aggregate for concrete Part IV Mechanical Properties
Learn MoreObjective 1 Determine the aggregate crushing value of coarse aggregate 2 Assess suitability of coarse aggregates for use in different types of road Theory The aggregate crushing value give a relative measure of the resistance of
Learn More1 To determine the aggregate crushing value of coarse aggregates 2 To assess suitability of aggregates for use in different types of road pavement 2 PRINCIPLE The aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load Crushing value is a
Learn MoreImpact and Crushing Value Aggregate Crushing Value ACV Sets UTA0630 Aggregate Crushing Value ACV Set Ø 150 mm BS UTA0640 Aggregate Crushing Value ACV Set Ø 75 mm BS The Aggregate Crushing Value ACV Test Set measures how resistant an aggregate is when being crushed under a gradually applied compressive load
Learn MoreWhat is Aggregate Crushing Value The aggregate crushing value provides a relative measure of resistance to crushing under a gradually applied compressive load To achieve a high quality of pavement aggregates possessing low aggregate crushing value should be preferred
Learn MoreJan 27 2019 · The aggregate crushing value BA100 Where B is weight of fraction passing 236mm 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 then the wearing surfaces 30 for concrete used the surfaces such as runway roads and air field pavements Also Read
Learn More“Aggregate Crushing values is a relative resistance of aggregates to crushing under gradually applied compressive load” In situations when aggregate value 30 or higher the result may be a mistake and in such cases the “ten percent fines value” should be determined and used instead
Learn MoreJan 04 2014 · Procedure of testing Aggregate Crushing Value ACV 1 Make a sieve analysis and get sufficient amount of aggregate by using 140 mm passing sieve and 1000 mm retained sieve 2 After sieving fill the cylinder in thre layers by the aggregate and apply 25 blows by the tamping rod with a approximate height of 50 mm 3
Learn MoreThe aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load Crushing value is a measure of the strength of the aggregate The aggregates should therefore have minimum crushing value 3 APPARATUS
Learn MoreThe Aggregate Crushing Value ACV Test Set measures how resistant an aggregate is when being crushed under a gradually applied compressive load Each set consists of steel cylinder plunger base plate cylindrical measure and tamping rod
Learn MoreApr 25 2019 · Aggregate crushing value B A 100 10 Ten Percent Fine Value Limit The limit of 10 percent fine value limit is 75 to 125 Viva Questions on 10 Fine value Test Q1 What is 10 fines value of an aggregate Ans 10 fines value of an aggregate is the resistance strength of crushing
Learn MoreThe aggregate crushing value ACV of an aggregate is the mass of material expressed as a percentage of the test sample which is crushed finer than a 236 mm sieve when a sample of aggregate passing the 132 mm and retained on the 950 mm
Learn MoreAn aggregate specimen is compacted into a steel cylinder fitted with a nofriction plunger The specimen is then loaded via the plunger The load crushes the aggregate to an extent depending on the crushing resistance of the material It is measured by a sieving test on the crushed specimen and it is a measure of the aggregate crushing value ACV
Learn MoreSep 12 2015 · The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load The test consists of subjecting the specimen of aggregate in standard mould to a compression test under standard load conditions See Fig1 Dry aggregates passing through 125 mm sieves and retained 10 mm sieves are filled
Learn MoreConstruction aggregate or simply aggregate is a broad category of coarse to medium grained particulate material used in construction including sand gravel crushed stone slag recycled concrete and geosynthetic aggregates Aggregates are the most mined materials in the world
Learn MoreJun 18 2013 · Man has used sand and stone for foundations for thousands of years Significant refinement of the production and use of road aggregates occurred during the Roman Empire which used aggregate to build its vast network of roads and aqueducts
Learn MoreThe 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
Learn MoreJan 04 2014 · Procedure of testing Aggregate Crushing Value ACV 1 Make a sieve analysis and get sufficient amount of aggregate by using 140 mm passing sieve and 1000 mm retained sieve 2 After sieving fill the cylinder in thre layers by the aggregate and apply 25 blows by the tamping rod with a approximate height of 50 mm 3
Learn Moreaggregate crushing value of coarse aggregate NOTE 1 The ‘aggregate crushing value’ gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load With aggre gate of ‘aggregate crushing value’ 30 or higher the result may be anomalous and in
Learn MoreThe aggregate impact value indicates a relative measure of the resistance of the aggregate to a sudden shock or impact which in some aggregates differs from its resistance to a slow compressive load
Learn MoreThis 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
Learn MoreRange of size of Aggregate For Los angles Abrasion Test Aggregate passing through 40mm and Retained on 10mm IS sieve
Learn MoreCRUSHING VALUE The aggregate crushing value when determined in accordance with Aggregates in NorwayProperties defining the quality of NGU Geological knowledge of aggregate deposits is fundamental in order to achieve optimum exploitation of the resources resistance against impact crushing wearing or polishing and geometrical
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