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Sep 05, 2018· The net weight of aggregate in the measure shall be determined to the nearest gram and this weight of aggregate shall be used the duplicate test on the same material. Test Procedure: The impact machine shall rest with out wedging or packing upon the level plate, block or floor, so that it is rigid and the hammer guide columns are vertical.
Aggregate impact value is the same as the abrasion test result. Impact value of aggregate should not exceed 30 percent for aggregate used for surface wearing course and should not exceed 45 per cent for surface other than wearing course.
May 07, 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 …
Apr 23, 2019· Aggregate impact value test required to find out the physical strength of aggregate. We described procedure of impact test on aggregate with a diagram as per is code on impact testing …
Sep 05, 2018· AIM: To determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) – 1963. APPARATUS: i) Cylindrical measure and plunger ii) Compression testing machine iii) IS Sieves of sizes – 12.5mm, 10mm and 2.36mm PROCEDURE: i) The aggregates passing through 12.5mm and retained on 10mm IS Sieve are oven-dried at aContinue reading "Aggregate Crushing 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. 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.
Dec 08, 2017· In this video, we will see the procedure of determining aggregate impact value as per IS 2386 PART4.
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%.
Jan 25, 2018· AGGREGATE IMPACT VALUE TEST AIM: To find Impact value of the given aggregate sample. APPARATUS The apparatus consists of an impact-testing machine, a cylindrical measure, tamping rod, IS sieve, balance, tamping rod and oven. PROCEDURE The test sample consists of aggregates passing 12.5 mm sieve and retained on 10 mm sieve and dried in an oven for four hours …
Department : Department of Infrastructure and Geomatic Engineering Title : AGGREGATE IMPACT VALUE 1.0 INTRODUCTION Impact value of an aggregate is the percentage loss pf weight of particles passing 2.36mm sieve by the application on load by mean of 15 blows of standard hammer and drop under specified test condition. The aggregate impact value ...
Application of Aggregate Impact Value. The aggregate impact test is considered to be an important test to assess the suitability of aggregates as regards the toughness for use in pavement construction. It has been found that for majority of aggregates, the aggregate crushing and aggregate impact values are numerically similar within close limits.
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 slowly applied compressive load. With aggregate of aggregate impact value higher than 30 the result may be anomalous.
Aug 27, 2009· Impact value of an aggregate is the percentage loss of particles passing 2.36mm sieve by the application or load by means of 15 blows of standard hammer and drop, under specified test condition.
Impact test The aggregate impact test is carried out to evaluate the resistance to impact of aggregates. Aggregates passing 12.5 mm sieve and retained on 10 mm sieve is filled in a cylindrical steel cup of internal dia 10.2 mm and depth 5 cm which is attached to a metal base of impact testing …
Procedure to determine Aggregate Impact Value i) The cup of the impact testing machine should be fixed firmly in position on the base of the machine and the whole of the test sample placed in it and compacted by 25 strokes of the tamping rod.
For determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. ... Oven(300 0 c) Aggregate Impact Value Test Apparatus. PREPARATION OF TEST SAMPLE. ... The aggregate to be tested is dried in oven for a period of not less than 4hours. PROCEDURE.
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 aggregates passing through 12.5 mm sieve comprises the test material.
Jun 22, 2014· The aggregate impact value is expressed as the percentage of the fines formed w.r.t the total weight of the sample Aggregate Impact Value (AIV) = (100*M2)/M1 Where: M1 =Mass of the test specimen M2 = Mass of the test specimen passing 2.36 mm test sieve
Jan 27, 2019· Steps by step procedure for Impact value test of aggregate . The test sample consists of aggregate are of size passing through 12.5mm and retained on 10mm I.S. Sieve. Sample of aggregate shall be dried in an oven for a period of 4 hours at a temperature of 100 to 110-degree Celsius and then cooled.
Experiment No. 4: Determination of the aggregate impact value of different coarse aggregate samples. (BS 812) Scope & 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.
Jul 14, 2018· 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.
Procedure for aggregate impact value test. i) The cup of the impact testing machine is fixed firmly in position on the base of the machine and the whole of the test sample is placed in it and compacted by 25 strokes of the tamping rod. ii) The hammer is raised to 380mm above the upper surface of the aggregates in the cup and allowed to fall ...
Dec 15, 2017· The aggregates should therefore have sufficient toughness to resist 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.
Aggregate Impact value Test Apparatus, Procedure and uses 2 months ago CementConcrete Theory and Concept on aggregate Impact value In physical meaning toughness is property of a material to resist impact …
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 ...
5.16 The Heavy Impact Value has application to testing the same materials as those tested by the standard, light, medium, and heavy medium heavy impact soil testers, but the greater mass of this impact soil tester provides less sensitivity of the output so is applicable for harder materials at the top end the scales or beyond the ranges of the lighter impact soil testers.
Apr 23, 2019· Aggregate impact value test required to find out the physical strength of aggregate. We described procedure of impact test on aggregate with diagram as per is code on impact testing …
7.6 Aggregate Impact Value 7.6.1 Scope. The aggregate impact value gives a relative measure of the 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 in the specification. This test provides a method for ...
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