10 aggregate impact value test 1 10 introduction aggregates used in road construction should be strong enough to resist crushing under traffic wheel loads if the aggregates are weak the stability of the pavement structure is likely to be adversely
Get PriceAggregate crushing value w b w a 100 w b w a 100 where w a is weight of surfacedry 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’ of the size of material
Get PriceAggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load the aggregate crushing value should not exceed 45 for aggregate used for concrete other than for wearing surfaces and 30 for concrete for wearing surfaces such as runways roads for
Get PriceCalculate 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
Get PriceCrushing strength impact value and water absorption value as co mpared to normal concrete 2 use of recycled coarse aggregate up to 20 did not affect the functional requirement
Get PriceFeb 15 2019 aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load the aggregate crushing value should not exceed 45 for aggregate used for concrete other than for wearing surfaces and 30 for concrete for wearing surfaces such as runways roads for pavements aggregate impact value
Get PriceIf the aggregate crushing value is less than 10 it signifies an exceptionally strong aggregate whereas if the crushing value is 35 or above it would normally be considered as weak aggregate after performing the test the crushed material is separated and calculated in terms of percentage of the original weight taken in the
Get PriceMar 01 2019 for secondary crushing of granitic rock material the amount of measurements exceeding nephelometers measurement capacity for distances of dw50 or closer were about 10 whereas for limestone the corresponding value was below 5 for tertiary crushing the percentages of exceeding results diminished with increasing distance from 90 to 10
Get PriceMaximum crushing value of good quality of aggregate products as a leading global manufacturer of crushing grinding and mining equipments we offer advanced reasonable solutions for any sizereduction requirements including maximum crushing value of good quality of aggregate quarry aggregate and different kinds of
Get PriceMay 17 2019 concept and significance of the aggregate crushing value test 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
Get PriceProcedure to determine aggregate crushing value i the aggregates passing through 125mm and retained on 10mm is sieve are ovendried at a temperature of 100 to 110 o c for 3 to 4hrs ii the cylinder of the apparatus is filled in 3 layers each layer tamped with 25 strokes of a tamping
Get PriceThe aggregate crushing value was expressed by eq 2 as below weight of the portion of crushed material passing 236 mm sieve w 2 g x
Get PriceThe crushing value test of aggregate provides the resistance of an aggregate sample to crushing under gradually applied compressive load generally the test is conducted on aggregate passing 125 mm and retained on a 10 mm
Get PriceThe sum of percentages of all deleterious materials in the aggregate shall not exceed a 5 b 10 c 15 d 20 view answer workspace report discuss in forum 132 the impact value of an aggregate is generally used as an alternative to its crushing value to know the quality of aggregate a yes b no view answer workspace report
Get PriceIndian roads congress and is have specified that the aggregate crushing value of the coarse aggregates used for cement concrete pavement at surface should not exceed 30 percent for aggregates used for concreteothet than for wearing surfaces the aggregate crushing value shall not exceed 45 percent according to the
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