### aggregate impact value report | construction

aggregate impact value (aiv) astm-d58-74. introduction: impact value of an aggregate is the percentage loss of weight particles passing 2.36mm sieve by the application of load by means of 15 blows of standard hammer and drop, under specified test condition. the aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates

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9.8 test report .. 49 tests for geometrical properties section 10 methods for determination of particle size distribution – sieve tests section 15 methods for determination of aggregate impact value

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aggregate impact value. the standard amount of impact is produced by a known weight, i.e. a steel cylinder, falling a set height, a prescribed number of times, onto an amount of aggregate of standard size and weight retained in a mould. aggregate impact values, (aiv's), below 10 are regarded as strong, and aiv's above 35 would normally be

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26-03-2014· design by dóri sirály for prezi aggregate impact test in conclusion,the percentage of aggregate's wear depends on the quality of aggregate. in this test, we can conclude that: the loss of aggregate = 1663 g the percentage of wear = 33.26% lower abrasion loss values indicate the

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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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social value uk has released a report: aggregation of impact: does all this measurement add up? which explores perspectives from a range of authors on how their organisations are responding to the challenges of aggregating impact data. how best to aggregate, or summarise, data, and challenges that originate from this, is a question encountered by any organisation which has multiple projects

Get Price### aggregate impact value (is:2386-part iv

07-05-2013· objective for determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. is sieve and retained on 10 mm. is sieve. reference standards is: 2386(part iv)-1963 methods of test for aggregate for concrete part iv mechanical properties. equipment & apparatus aggregate impact test machine sieves (12.5mm,10mm) cylindrical metal measure tamping rod

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the average value of the two samples is the impact value of aggregate. lab test report format. si: description: sample 1 in grams: sample 2 in grams: 1: weight of dried sample (w1) 340: 360: 2: weight of crushed particle passed through 2.36mm sieve (w2) 50: 65: 3: impact value of aggregate = (w2/w1) x 100: 15%: 18%: conclusion . average of impact value of aggregate = 16.5%. now the tested

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report the mean as the aggregate impact value, unless the individual results differ by more than 0.15 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 impact value. note: the median of four results is calculated by excluding the highest and the lowest result

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aggregate impact value (the value of aggregate impact test) = (w1/w2)*100. the value of aggregate impact test should not be more than 45% by weight of aggregates, used for concrete other than wearing surface. an impact value 35% is permissible for the bituminous macadam. maximum permissible impact value for the water bound macadam is 40%.

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social value uk has released a report: aggregation of impact: does all this measurement add up? which explores perspectives from a range of authors on how their organisations are responding to the challenges of aggregating impact data. how best to aggregate, or summarise, data, and challenges that originate from this, is a question encountered by

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reporting of results the mean of the two results shall be reported to the nearest whole number as the aggregate impact value of the tested material. aggregate impact value is used to classify the stones in respect of their toughness property as indicated below in table 1.

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aggregate impact value (aiv) = 𝑾 𝑾 × calculate the mean of the two results to the nearest whole number. report the mean as the aggregate impact value, unless the individual results differ by more than 0.15 times the mean value. in this case repeat the test on two further specimens,

Get Price### methods for determination of aggregate impact value (aiv

aggregate impact value (aiv) = 𝑾 𝑾 × calculate the mean of the two results to the nearest whole number. report the mean as the aggregate impact value, unless the individual results differ by more than 0.15 times the mean value. in this case repeat the test on two further specimens,

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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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final report of aggregate impact value test weight of oven dried aggregate sample (a) = 332.8 gm. weight of fraction (dust) of aggregate passing through 2.36 mm sieve (b) = 23.2 gm aggregate impact value, = (b/a) *100% = ( 23.2/332.8) * 100% = 6.97% and, hence, the finally aggregate impact value is 6.97 . significance of impact test the procedure of determining aggregate impact value is

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aggregate impact value test apparatus crushing value "harjai" aggregate impact test apparatus with counter with respect to concrete aggregates,toughness is usually considered the resistance of the material to failure by impact.several attempts to develop a method of test for aggregates impact value have been made.the most successful and known test is described below.

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aggregate impact value report conclusion . aggregate impact value apparatus - matest. used to determine the impact value of aggregates and select them for a given application. the machine has a trip-action get price here !

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