· Aggregate Impact Value Tester IS : 2386 (Part-IV) i) Impact testing machine conforming to IS: 2386 (Part IV) – 1963. ii) IS Sieves of sizes – 12.5mm, 10mm and 2.36mm. iii) A cylindrical metal measure of 75mm dia. and 50mm depth. iv) A tamping rod of 10mm circular cross section and 230mm length, rounded at one end. v) Oven. PREPARATION OF ...
· 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.
It is indicated by aggregate impact value which is a measure of the resistance of an aggregate to impact load. Aggregate impact value test can be conducted accordingly to IS:2386 (part IV). According to IS codes, the testing mechanism is similar to that of the aggregate crushing value test except for the load which is applied suddenly using the aggregate impact testing machine.
Aggregate Impact Value Test | Impact Test Of Aggregate | Impact Value ...
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
The impact value is measured in the ratio between the sieved aggregate of 10mm & 2.36mm aggregates. The aggregate impact value test will be conducted as per the Indian Standard Code IS code 2386 Part 4.
· AGGREGATE IMPACT VALUE This test is done to determine the aggregate impact value of coarse aggregates as per IS: 2386 (Part IV) – 1963. 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 […]
Aggregate Impact Value = W B W A × 100 Where, W A is Weight of oven-dried sample W B is Weight of fraction passing through 2.36-mm IS Sieve Reporting of Results The mean of the two results shall be reported to the nearest whole ...
· 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.
· 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 heating at 100-110 0C for a period of 4 hours and cooled. Sieve the material through 12.5mm and 10.0 mm IS sieves. The
· The 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. AIV gives A relative measure of the resistance of an aggregate to sudden impact, which is differs from withstand to slowly applied ...
· General Outcomes. Smaller is the aggregate impact value, tougher is the material. This is because the fraction that passes through 2.83mm sieve is actually the crushed material that otherwise was a part of aggregate particle/s. More is the fraction finer than this sieve; less tough the material is.
The aggregate impact value provides a relative measure of resistance to crushing under a gradually applied compressive load. To achieve a high quality of pavement, lower aggregate impact value should be preferred. Toughness is the property of a material to resist impact. Due to traffic loads, the aggregate are subjected to the pounding action ...
SCOPE : The aggregate impact value provides the property of a relative resistance of the aggregate to sudden shock or impact. The particular purpose which an aggregate is meant to serve requires the aggregate to have a particular strength which is usually stated
Then impact value = [(W 1 /W) x 100] ADVERTISEMENTS: This value should not be more 30% for aggregate to be used in concrete for wearing surfaces as road and 45% for other type of concrete. Property # 2. Hardness: It is defined as the resistance to wear ...
Aggregate impact value of coarse natural aggregate, ≤ 30% 5. Physical Requirements Particle Density and Water Absorption 3 Water absorption of coarse natural aggregate, ≤ 0.8% of coarse recycled aggregate, ≤ 10% 5. Physical Requirements ...
Aggregate impact value = B/A x . iii) Two such tests should be carried out and the mean of the results should be reported. A sample proforma for the record of the test results is given below.. As per IS 283-1970 aggregate impact value …
· Aggregate Impact Value Tester IS : 2386 (Part-IV) i) Impact testing machine conforming to IS: 2386 (Part IV) – 1963. ii) IS Sieves of sizes – 12.5mm, 10mm and 2.36mm. iii) A cylindrical metal measure of 75mm dia. and 50mm depth. iv) A tamping rod of 10mm circular cross section and 230mm length, rounded at one end. v) Oven. PREPARATION OF ...
· The aggregate impact value is denoted by ''AIV'' and it is determined using the IS 2386 part 4 test procedure. So, the above you have a typical image of the equipment. So, what you see is that basically you have a cylindrical steel cup at the bottom where the ...
DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) (BS 812-112) Scope: This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact. Principle A test specimen is compacted, in a standardized manner, into an open steel cup.
· 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%.
Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete ASTM standard may be obtained from ASTM, ...
The impact test on aggregate is carried out to know the response of aggregates to different kinds of loads that the aggregates will be subjected to during their service life. The need for impact value test is used to measure the toughness …
Aggregate impact value test Machine Take a sample of aggregate and sieve with the help of a 12.5-millimeter sieve and retain it into a 10-millimeter sieve. Sieving should be done in a circular motion. After that sample should be sieved with 10 millimeters sieve and
The procedure of the impact value test includes the following series of steps: 1. The aggregate samples of size 10mm to 12.5mm (passing through 12.5mm sieve and retained on 10mm sieve) are first taken and oven-dried at a temperature ranging from 100 degrees Celsius to 110 degrees Celsius for about four hours. 2.
Aggregate Impact Value (BS 812: Part 3) 1. Objective To determine the aggregate impact value in the laboratory 2. 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 ...
Various Test on Aggregate The following are the aggregate testing methods, 1. Impact Test on Aggregates What Is Impact Value Of Aggregate? It is the ability of aggregates that resist sudden impact or shock load on it. Also, it can be defined as the resistance of aggregate to failure by impact load is known as the Impact Value of Aggregate.
· Aggregate Impact Test. Read definition, apparatus, IS code, procedure, observations, formula, result and lab report about aggregate impact value test. Cut off the overflow of aggregates in cylindrically measure by tamping rod using its straight edge or by a …
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