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 is expressed as the percentage of the fines formed in terms of the total weight of the sample. 100 W2 Where, W1 = Original weight of the sample. Aggregate Impact Value = W1 W2 = Weight of fraction passing 2.36mm IS sieve.
Apr 24, 2019· Aggregate Crushing value test procedure of Coarse aggregate is required to find out the relative measure of resistance of an coarse aggregate crushing under gradually applied compressive load. We described the procedure of crushing value of aggregate test as per IS Code with Crushing value apparatus and Limits.
Aggregate Impact Value Test. AIV test is conducted to determine the Aggregate Impact Value of Coarse aggregate. The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates differs from Its resistance to a slow compression load.
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.
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%.
Oct 09, 2018· Basically, the aggregates impact value is aggregate which provides a relative measure of the resistance of an aggregate to sudden shock or impact. However, it can be explain as the aggregate crushing value which is defined as a ratio of the weight...
The apparatus used for determining aggregate impact value of coarse aggregates is Impact testing machine conforming to IS: 2386 (Part IV)- 1963,IS Sieves of sizes – 12.5mm, 10mm and 2.36mm, A cylindrical metal measure of 75mm dia. and 50mm depth, A tamping rod of 10mm circular cross section and 230mm length, rounded at one end and Oven.
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.
Apr 19, 2017· DETERMINATION OF AGGREGATE IMPACT VALUE ... Los Angeles Abrasion Value Test - Duration: 17:01. NCTEL 107,378 views. 17:01. ... Flakiness and Elongation Index of aggregate|with calculation ...
Feb 03, 2012· From the experiment, we get average percent wear are 22.34% still not exceeding JKR’s standard, <30%. So we can conclude that the aggregate crushing value provides a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load.
Impact and Crushing Value Aggregate Crushing Value (ACV) Sets. UTA-0630 Aggregate Crushing Value (ACV) Set Ø 150 mm BS. UTA-0640 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.
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Apr 23, 2019· Aggregate impact value is an important mechanical property of coarse aggregate. Why Aggregate Impact Value Test required ( AIV Test)? Aggregate Impact value test is required to ensure the “physical strength of aggregate” and physical strength of aggregate directly related to structural strength in construction work.
Jun 14, 2012· Aggregate impact value test 1. Aggregate Impact Value TestAim: To conduct a test to determine aggregate impact value of coarseaggregate.Note: Aggregate Impact Value gives a relative measure of the resistanceof an aggregate to a sudden shock or impact which differs fromcrushing strength.IS: 2386 Part IV.Apparatus:Impact Testing Machine, Tamping Rod, Sieves 12.5mm, 10mm …
Advantages of aggregate impact value test Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Advantages of aggregate impact value test, quarry, aggregate, and different kinds of minerals.
The 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 2,36 mm sieve when a sample of aggregate passing the 13,2 mm and retained on the 9,50 mm sieve is subjected to crushing under a gradually applied compressive load of 400 kN. 2 APPARATUS
Aggregate impact and crushing test - SlideShare 8 Feb 2012 ... These crushing tests can reveal aggregate properties subject to ...PROCEDURE - Aggregate Impact Value (SS 1974)1. The apparatus .... Merits of c4 coated coconut cover crush block over aggregate block 653 views Like.
Exp 4 Aggregate Impact Value. Experiment No. 4: ... Aggregate Impact Value; Test Specifications: Aggregate Impact Value. The test sample shall consist of aggregates the whole of which passes through ½ in B.S. test sieve and is retained on a 3/8 in B.S. test sieve. The aggregate comprising the test sample shall be dried in an oven for a period ...
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AGGREGATE IMPACT VALUE TEST 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.. ... Aggregate impact value …
Jul 16, 2014· Aggregate impact value test gives an indication of aggregate’s toughness property (i.e. property of a material to resist impact) Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. Aggregate impact value (%) Toughness Properties <10 Exceptionally tough / Strong 10 – 20 Very tough / Strong […]
From the data obtained and the Aggregate Impact Value Test (AIV) that we have done, it shows that our mean value from all three samples is 24.5%. Based from the Aggregate Impact Standard, for the aggregate impact value of 24.5% which is 20% - 30% is satisfactory strong for road surfacing.
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, calculate the median of the four results to the nearest whole number and report the median as the aggregate impact value.
Determination of Aggregate Impact Value – Impact Test on Aggregates is done to carry out to: Determine the impact value of the road aggregates, Assess their suitability in road construction on the basis of impact value.
Dec 15, 2017· dcc3113 determination of aggregate impact value. 1. 1 civil engineering deparment dcc 3122 highway lab report title determination od aggregate impact value course / session dcc 3122 – geotechnic and highway laboratory prepare by group group a group members 1.
their disintegration due to impact. This characteristic is measured by impact value test. The aggregate impact value is a measure of resistance to sudden impact or shock, which may differ from its resistance to gradually applied compressive load. 3. APPARATUS The apparatus of the aggregate impact value test as per IS: 2386 (Part IV) – 1963
Result Introduction measure of degradation of mineral aggregates of standard grading resulting from a combination of action including abrasion and grinding in a rotation steel drum containing a specific number of steel spheres. give a measure of aggregate hardness, as specified
Sep 12, 2015· Aggregate impact value = (W1/W2)*100. Aggregates to be used for wearing course, the impact value shouldn’t exceed 30 percent. For bituminous macadam the maximum permissible value is 35 percent. For Water bound macadam base courses the maximum permissible value defined by IRC is 40 percent. Also read: Impact Value Test Procedure of Aggregates. 4.
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