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Aggregate Impact value . Classification 10 . Exceptionally strong . 10 - 20 . strong . 20 - 30 . satisfactory for road . surfacing 35 . Weak for Road Construction . It shows that the ...
Aggregate impact value is the ratio of the weight of the fraction passing through 2.36 mm weight W2 by the total weight of the sample weight W1 W2. Aggregate Impact Value W2 W1W2 100 80 gm 300 gm 26.67 Impact Value Where W1 Weight of
Based on the impact value we can decide whether the coarse aggregate is suitable for construction or not. This test is performed to ensure the aggregate toughness which is used in road construction to work as a base layer sub-base layer. How do you calculate the aggregate impact value? The impact value is measured in the ratio between the ...
Dec 15 2017 The 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. From the calculations done we know that the aggregate can be acceptable as their Aggregate Impact value is less then 20 Aggregate Impact Value 10.
Experiment No. 4: Determination of the aggregate impact value of different coarse aggregate samples. BS 812 Scope amp; significance: Aggregate Impact Value The aggregate impact value gives a relative measure of the toughness or the resistance of aggregate sudden shock or impact is not proportional to the resistance to a slowly applied compressive load.
Feb 22 2010 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. Procedure o f Aggregate Impact Test The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100-110 C for a period of 4 hours and cooled.
Impact and Crushing Value Aggregate Crushing Value ACV Sets. UTA-0630 Aggregate Crushing Value ACV Set 150 mm BS. UTA-0640 Aggregate Crushing Value ACV Set 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.
Jan 12 2017 The aggregate impact value is a calculation of the resistance to abrupt impact bang or shock which may vary from its resistance to steadily applied compressive weight. Procedure: The test specimen includes the aggregates of size ranging from 10.0 mm 12.5 mm. Aggregates can be dehydrated by warming them at temperatue of 100-110 C for a ...
Jan 23 2018 APPLICATION S OF AGGREGATE IMPACT VALUE. Aggregate having AIV less 50 is better to use in construction where as those having value more than 50 are bad for construction. It is reliable to calculate the AIV of the aggregate use as road construction as it will give us the capacity of road to bear the load on it.
Jul 01 2019 Procedure of Aggregate Impact value test. The test sample: normally aggregates sized 10.0 mm to 12.5 mm. the aggregates should be dried by
Jul 14 2018 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 Indian Standard CODE IS 2386 Part IV – 1963 is used for procedure and classification of aggregate by result.
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
Jun 14 2020 AGGREGATE IMPACT VALUE TEST IS: 2386 Part IV OBJECTIVE: To determine the impact value of the road aggregates. To assess their suitability in road construction on the basis of impact value. APPARATUSEQUIPMENTS REQUIRED: Impact testing machine weighing 45 to 60 kg and having a metal base...
Mar 21 2018 • Aggregate Impact Values AIV’s below 10 are regarded as strong and AIV’s above 35 would normally be regarded as too weak for use in road surfaces. • Aggregate Impact Values and Aggregate Crushing Values are often numerically very similar and indicate similar aggregate strength properties. Recommended Aggregate Impact Test Values
Mar 25 2020 One such test is the Aggregate Impact Value Test. The impact test is a type of quality control test for highway pavements and is used to check the suitability of aggregates to be used in the construction of highway pavements. The property by which the aggregates are capable of resisting the impact is known as toughness.
Mar 30 2020 The aggregate impact value is defined as a relative measure of the resistance of an aggregate to sudden shock or impact which in some aggregates may differ from its resistance to a slow compressive load.
May 11 2020 Aggregate impact value test method AIV test s 2386-1963 Aggregate impact value testing for concrete.
Now the final report of aggregate impact value is calculated as 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
Significance of Aggregate Crushing Value Test. The crushing value test is conducted on aggregates that are used for the construction of roads. Lower crushing value aggregates give much more durability for roads due to its lower crushed fraction under the compression load.
The aggregate impact testers are used for determining the aggregate impact value These instruments consist of a circular base with two vertical guides Their hammer of weight 13.75 0.25 kg is raised to fall freely down the vertical guides and the height of fall is adjusted through 380 5mm.
The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact which in some aggregate differs from its resistance to a slow compressive load. The test sample consists of aggregate the whole of which passes a
The apparatus used for determining aggregate impact value of coarse aggregates is Impact testing machine conforming to IS: 2386 Part IV- 1963IS 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.
The crushed aggregate is removed from the test specimen and sieve it through the 2.36 mm IS sieve. An impact value is measured as of aggregates passed through the 2.36mm sieve W2 to the total weight of the sample W1. Aggregate impact value The value of aggregate impact test W1W2100
This Apparatus is used to determine aggregate impact value of coarse aggregate. The hammer of the tester fall freely from 380 mm height on coarse aggregate for 15 times15 sec.the crushed aggregate removed from the cup then sieved and weighed. The ratio of the weight passing 2.36mm sieve and weight of oven dried sample is Aggregate Impact value.
This percentage is known as the aggregate impact value and more the aggregate impact value less is the toughness of the road aggregates and vice verse. If impact value is less than 10 then aggregate is said to be exceptionally strong if it is in range of 10 to 20 then they are good aggregates having impact value less than 35 are considered ...
This video Animation Animated Video explains how to determine aggregate impact value Aggregate Impact Test. Aggregate test Coarse aggregate Test Civ...
To evaluate the toughness of a stone i.e. the resistance of the aggregates to fracture under repeated impacts is called Impact Test.This test is done to determine the aggregate impact value of coarse aggregate as per IS 2386 Part-IV 1993. Aggregate Impact Value Test as per IS 2386 Part-IV 1993
Used to determine the impact value of aggregates and select them for a given application. The device has a trip-action hammer release blow counter device and a built-in operator safety device. Heavy-duty construction with hardened steel surfaces for minimum wear. The complete assembly is cadmium plated for corrosion protection.