aggregate impact value test slideshare|aggregate impact value test pdf : convenience store The aggregate impact value is a measure of resistance to sudden impact or shock, . Play the most popular and trending games at lagged.com. Al.
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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 aggregate impact value is a measure of resistance to sudden impact or shock, .The aggregate impact test evaluates the toughness and resistance of aggregates . 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 Impact Test The test sample . 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 . The Aggregate Impact Value (AIV) test is a procedure conducted to determine the resistance of an aggregate to sudden impact or shock. This test is crucial in determining the .
The document discusses the aggregate impact value test, which measures a material's resistance to sudden impact. The test involves compacting aggregate samples and dropping .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 .
The procedure for conducting an Aggregate Impact Test (AIV) is as follows: Prepare the test sample by selecting aggregates sized between 10.0 mm and 12.5 mm. Dry .
The aggregate impact test evaluates the toughness and resistance of aggregates to sudden impact. The test involves compacting aggregates between 10-14mm in a metal cylinder, dropping a 13.5-14kg hammer onto the .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 . To test a sample, aggregates are dried, graded, placed in the measure, and compacted. The hammer is then raised and dropped 15 times from 380mm above the sample. The aggregate impact value is calculated as the .
17. Tests on aggregates a.Texture and shapes test i.e. test for shapes of aggregates: 1. round shape –usually natural aggregates 2. irregular shape- a combination of different shapes 3. angular shape- usually of crushed .The average value of the two samples is the Impact Value of Aggregate. Lab Test Report Format. SI: Description: Sample 1 in grams: Sample 2 in grams: 1: Weight of dried sample (W1) 340: 360: 2: Weight of crushed particle passed . After Sieving dry the test specimens by heating at a temperature of 105±5oC. 9 (Table:03) Guide to minimum mass of test portions required to obtain a suitable mass of material to determine the aggregate crushing value Grading of the aggregate Minimum Mass of the test portion1) mm All-in aggregate 40 max. size All-in aggregate 20 max. size . 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% .
The aggregate impact test determines a material's resistance to sudden shock or impact. Road stones must withstand pounding from traffic. . then sieving to determine the percentage passing a 2.36mm sieve. 3. The aggregate impact value is calculated as the percentage, by weight, of fines produced by the impact blows that pass through the 2 . 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.The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock . Fig. 2: Sieves Seives required are 12.5, 10.0 and 2.36 mm Fig. 3: Impact Testing machine Weight of hammer is 13.5 to 14.0 kg and Height of Fall is 380±5 mm 3.Reference IS 2386(Part 4):1963 Methods of Test for Aggregates for Concrete . 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 taken. 13
1 SlideShare Following Follow. Unblock User Block User; 1 SlideShare Tags. test value impact aggregate aggregate impact value test experiment. See more. Activity; About; Documents (1) . Download Tags. test value impact aggregate aggregate .Aggregate Impact Value Test Calculator. a) Weight of empty Cylindrical steel cup (W1) Gram b) Weight of Cylindrical steel cup + Aggregate (W2) Gram c) Weight of ggregate passing through 2.36 mm Sieve (W3) Gram Results: Actual Weight of Aggregate. Impact Value of aggregate. Status. Print this page.
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 .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. Procedure of Aggregate Impact Test 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.From the experiment, the value is 29%, 29%, and 29% are close to the maximum allowable limit for good aggregates. Hence, they can be acceptable as their Aggregate Impact value is less than 30%. Aggregate ImpactValues, (AIV's), .
Step 6: Calculating the Aggregate Impact Value. The aggregate impact value is calculated by subtracting the weight of the material passing through the 2.36 mm sieve from the original weight of the sample. The result is then divided by the initial weight of the sample and expressed as a percentage.
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3. Physical Properties of Aggregates: 1. Bulk density and Voids – 1400 to 1900 kg/ m3 2. Specific Gravity – 2.6 to 3.5 3. Particle Shape and Surface Texture - angular 4. 11. Aggregate impact value test : The ‘aggregate impact value’ gives a relative measure of the resistance of an aggregate to sudden. Shoke or impact loading. The aggregate impact value should not be more than 45%for aggregates used for concrete other than for wearing surfaces. The aggregate impact value should not be more than 30% for aggregates .
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. 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 . Procedure • The cylinder with the test sample and plunger in position is placed on compression machine • Load is applied at a rate of 4 tonnes per minute up to • 40 tonnes • The crushed aggregate is taken out, sieved through • 2.36 mm IS sieve and weighed to get material passing • Aggregate crushing value = W*100/W2 • W2= Weight .
Sr. No. Test Sub base Base course Surfacing course 1 Los Angeles abrasion test 60 50 40 2 Aggregate impact value test 50 40 30 3 Flakiness index test - 15 15 The table given below shows the maximum permissible values of tests .
To determine the aggregate impact value of a coarse aggregate. APPARATUS. 1. Aggregate impact testing machine 2. IS sieve 14mm, 10mm, 2 3. a cylindrical measure 4. rod and balance 5. Bristle brush 6. Weighing Scale APPARATUS. Aggregate Impact Value Instrument. CALCULATION. Description Sample I (G) Sample II (G) Sample Mould weight (W1) 2548 2548. 11. Aggregate impact value test : The ‘aggregate impact value’ gives a relative measure of the resistance of an aggregate to sudden. Shoke or impact loading. The aggregate impact value should not be more than 45%for aggregates used for concrete other than for wearing surfaces. The aggregate impact value should not be more than 30% for aggregates . Physical Requirements for Coarse Aggregates for Stone Matrix Asphalt Property Test Method Specification Cleanliness Grain Size Analysis IS:2386 (P-1) < 2% passing 0.075 mm sieve Strength Los Angeles Abrasion value IS:2386 (P-4) < 25% Aggregate Impact Value IS:2386 (P-4) < 24% Polishing Polished Stone Value IS:2386 (P-114) > 55% Water Absorption . Here are the recommended Aggregate Impact Test values and their corresponding classifications: Aggregate Impact Value Classification. Less than 20%: Exceptionally strong. Between 10% and 20%: Strong. Between 20% and 30%: Satisfactory for road surfacing. More than 35%: Weak for road surfacing.
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aggregate impact value test slideshare|aggregate impact value test pdf