aggregate impact test slideshare|aggregate impact value aiv test : importers The aggregate impact value indicates a relative measure of the resistance of aggregate to a sudden shock or an impact, which in some aggregates differs from its resistance to a slow compressive load. The method of test covers the .
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This document describes procedures for three tests to assess the resistance of aggregates to mechanical degradation: the aggregate impact test, ten percent fines test, and .
The impact test is a type of quality control test for highway pavements that is used .
It also summarizes the aggregate impact value test, which evaluates the . The impact test is a type of quality control test for highway pavements that is used to determine the suitability of aggregates for use in highway pavement construction. Aggregates used in road construction . The document describes an experiment to determine the aggregate impact value of a given specimen through a standardized test procedure. Three samples were tested by subjecting aggregates retained .
The aggregate impact value indicates a relative measure of the resistance of aggregate to a sudden shock or an impact, which in some aggregates differs from its resistance to a slow compressive load. The method of test covers the . To measure this characteristic, the impact value test is conducted. The test determines the aggregate's resistance to sudden impact or shock, which may differ from its .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 of Aggregate .What is the aggregate impact value test? A relative measure of the resistance of aggregate due to the sudden shock or impact on it is called aggregate impact value. Based on the impact value, we can decide whether the coarse .
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This document provides specifications and testing procedures for aggregate used in concrete. It lists standards and specifies testing frequency for various aggregate properties such as grading, silt content, flakiness index, and . It also summarizes the aggregate impact value test, which evaluates the resistance of aggregates to shocks and impacts, and the aggregate crushing value test, which determines the resistance of aggregates to .The purpose to get the Aggregate Impact value is to determine the classification of aggregate to determine that aggregate is Suitable for what work and either the aggregate can carry the big load or not. From the test have been do, the value .
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2. This test is done to determine the aggregate impact value of coarse aggregates AIV is basically a % ratio of 2.36mm sieved aggregate to 14mm aggregate sieve. The apparatus used for determining aggregate . 3. 3 OBJECTIVES To assess their suitability inroad construction on the basis of impact value. This test is done to determine the aggregate impact value of coarse aggregates. Many tests have been developed .
4. increa~ing compressive load until failure to find the crushing strength in kg/cm2• However, ~ this test is seldom carried out due to difficulty in preparing specimens and not getting reproducible results. On the contrary, the . The mean of two observations, rounded to nearest whole number is reported as the Aggregate Impact Value. • Aggregate impact value = (W2/W1) x 100 – Where, W1 is total weight of dry sample – W2 is weight of portion passing through 2.36 mm sieve. Recommended Aggregate Impact Test Values Aggregate Impact Value Classification <20% .
Formula Used Aggregate Impact value is expressed as percentage of fineness formed w.r.t total weight of sample. Aggregate Impact Value (AIV) = (M2/M1)*100. Where M1= Mass of test specimen. M2= Mass of test specimen passing 2.36 mm test sieve. I.V.A = M2/M1 x100 OR I.V.A = C/A x100 M1 = Total weight M2 = Weight of sample pass This video (Animation, Animated Video) explains how to determine aggregate impact value (Aggregate Impact Test). Aggregate test || Coarse aggregate Test (Civ. IMPACT VALUE TEST The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact. The impact value is some times used as an alternative to its crushing value. Material passing 12.5mm and retained on 10mm sieve is .
Aggregate impact Value • This test assesses the suitability of aggregate as • regards the toughness for use in pavement construction • Road aggregates subjected to hammering action due to traffic loads- so possibility of breaking • Should be tough enough- so proper aggregates to be used • Suitability to be checked by laboratory tests 1. This test gives relative measure of resistance of aggregate to suddenly applied load or impact load. 2. The test sample consists of aggregate passing through 12.5 mm IS sieve and retained on 10 mm IS sieve. The aggregate is oven dried at 110 degree C for 4 hours. 3. The aggregate is filled in the cup, (weight A). Aggregate Impact Value • The aggregate Impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact. Apparatus • Impact testing machine • A cylindrical steel cup of internal diameter 102 mm and depth 50mm • IS Sieves of sizes 12.5, 10 and 2.36 mm • A cylindrical metal measure of internal diameter .
2. 8/16/2019 Aggregate Testing 2 Importance of Testing Aggregates form major part of pavement structure (88-96% by weight, 80% by volume) Load transfer by grain to grain contact Are used in construction of pavements using cement concrete, bituminous material and in WBM / WMM Have to bear load stresses and resist wear Are also subjected to impact due to moving . It is important for applications with potential impact loads. There is no direct relationship between impact and compressive strength. Impact strength depends on factors like the aggregate type, size, and roughness, as well as . This document outlines a procedure to determine the aggregate impact value (AIV) of road construction aggregates. The AIV test involves compacting a sample of aggregates, subjecting it to 15 blows from a hammer, and calculating the percentage of fines generated that pass through a 2.36mm sieve.
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CONCLUSION AND DISCUSSION In this way, AIV test can be done in lab using Impact test machine. The percentage of the aggregate impact value for three sample that we test are 28.33%, 28.48% and 27.08%. . The general test procedure of the aggregate impact value test is briefly described below: Objectives of Impact Test. 1. To assess the suitability of the aggregate to be used in the highway pavement. 2. To determine the . Ultratech RMC summer training covered concrete testing methods like slump test and bulk density test. The working of an RMC plant and concrete mix design were explained. Tests performed included sieve analysis, air .
APPARATUS AGGREGATE IMPACT TEST MACHINE 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 Oven PREPARATION OF SAMPLE The test .
5. Aggregate impact value. impact value = (W2/W1) x 100 – Where, W1 is total weight of dry sample – W2 is weight of portion passing through 2.36 mm sieve. Aggregate Impact Value Classification <20% Exceptionally Strong 10 – 20% Strong 20-30% Satisfactory for road surfacing >35% Weak for road surfacing It also summarizes the aggregate impact value test, which evaluates the resistance of aggregates to shocks and impacts, and the aggregate crushing value test, which determines the resistance of aggregates to crushing under gradually applied compressive loads. Finally, it outlines the procedure to determine the specific gravity and water .
Aggregate Impact Value Test 1. The test sample shall consist of aggregate the whole of which passes a 12.5 mm IS Sieve and is retained on a 10 mm IS Sieve. The aggregate comprising the test sample shall be dried in an oven for a period of four hours at a temperature of 100 to 110°C and cooled. 2.
vii. Remove the aggregate sample tested from the mould and sieve through 2 sieve openings. viii. Weight the aggregate fraction passing the 2 test sieve. ix. Repeat twice the test for the same batch of aggregate sample. DISCUSSION. From laboratory to determine the aggregate impact value thathave been done, 3 tests have done to get the average of . The Compressive Strength of low cost fiber reinforced concrete of 10mm size in proportion of 0%, 0.1% and 0.15% at 28th day is: For 0% replacement of aggregate 29 MPa, 30.7 MPa and 31.5 MPa, for 5% replacement of waste aggregate by natural aggregate is 27.1 MPa, 28.5 MPa and 29.7 MPa,, for 10% replacement of waste aggregate by natural aggregate .
2. 1.SOIL 2.AGGREGATE 3.BITUMEN 4.CEMENT TYPES OF TEST ON ROAD MATERIAL 1.Test on soil sub grade- C.B.R. Test. 2.Test on Aggregate – Los Angeles abrasion, impact test, shape test. 3.Tests on bitumen- Penetration, Ductility and Softening point test. 4. Test on cement concrete- Workability Tests, Air content test, Setting Time.Procedure of 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. (i) Sieve the material through 12.5 mm and 10.0mm IS sieves. The aggregates passing through 12.5mm sieve and retained on 10.0mm sieve comprises the test material.
28. 28 FINENESS MODULUS (F.M): The sum of cumulative percentage of residues retained on each of the Indian standard sieves (80mm,40mm,20mm,10mm,4.75mm,2.36m m,1.18mm,600 microns,300microns and 150 microns each succeeding sieve has half the aperture of the previous one), divided by the 100,is known . 2. ABSTRACT In the material testing laboratory, a Charpy impact test was performed on three different types (hot,cold,and steel alloy)of steels testing each variety at four different temperatures (32°C(RT), 100°C,0°C and -22°C ). From results (shown below), we determined that the a transition is from ductile failures to brittle failures. specimen (S) Impact .
aggregate impact value test pdf
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aggregate impact test slideshare|aggregate impact value aiv test