Types of Testing for Aggregates - Structural Guide

Aggregate crushing value is an indicator of the crushing resistance of the aggregates when a compressive load is increased. It is tested in accordance with BS 812:110, 1990 and aggregate passing a 14mm test sieve and retained on 10mm sieve are considered for the testing. The flakiness index of the coarse aggregate is determined as the

Flakiness Index Test for Aggregates - Civil Engineering

Flakiness Index of aggregate is the percentage by weight of aggregate particles whose least dimension is less than 0.6 of their mean dimensions. This test is applicable to aggregates having size larger than 6.3mm.

Specification for Aggregate As Per Indian Standard 383

The aggregate crushing value shall not exceed 45% for aggregate used for concrete other than for wearing surface. The aggregate crushing value shall not exceed 30% for aggregate used for wearing surfaces such as runways, roads, and pavements. Aggregate Impact Value -

Influence of jaw crusher parameters on the quality of

The part of aggregate processing investigated in this paper is the crushing, specifically primary crushing using a jaw crusher. Coarse aggregates for unbound use are often produced using a single crushing stage in a jaw crusher, as opposed to concrete or asphalt aggregates, where at least two and often three or four crushing

IS 2386-4 (1963): Methods of test for aggregates for

aggregate crushing value of coarse aggregate. NOTE 1 -The ‘aggregate crushing value’ gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. With aggre- gate of ‘aggregate crushing value’ 30 or higher, the result may be anomalous, and in

What Is Coarse Aggregate | Requirements of Good Coarse

The flakiness index of the aggregate will give the idea about the thickness of the aggregate. #5 Elongation Index of Coarse Aggregate ( IS 2386 Part I -1963) The elongation index of the aggregate is the percentage by the weight of the particles whose greatest dimension or the length is greater than 1.8 times of their mean dimensions.

Flakiness and Elongation Index of Coarse Aggregate

Flakiness and Elongation Index of Coarse Aggregate Particle shape and surface texture influence the properties of freshly mixed concrete more than the properties of hardened concrete. Rough-textured, angular, and elongated particles require more water to produce workable concrete than smooth, rounded compact aggregate.

Effect of Aggregate Flakiness on the Compressive Strength of

Abstract: In this paper effects of aggregate flakiness on the compressive strength of concrete cubes have been studied using experiments. Total 30 cubes have been cast using normal, 5% of 8 mm, 10 mm and 12 mm size of flaky aggregates and 10% of 12mm size of flaky aggregate. NDT of the cast cubes

Stone Aggregate Testing Laboratory | Sigmatest

The flakiness index is found by expressing the weight of the flakey aggregate as a percentage of the aggregate tested. Test Method: IS: 2386 (P-1) 1963. Impact Value: This test helps in determining the value which indicates the ability of an aggregate to resist crushing.

how to improve flakiness index on a aggregate crushing plant

Aggregates from tunnel muck treatments. Properties and uses. 22 Mar 2011 muck treated in two different plants (a mobile plant and a fixed plant) The current survey and the potential increase in underground constructions (and jaw crusher and a magnetic separator above a conveyor belt, before the point where shape of coarse aggregates (flakiness index and shape index );

Aggregate - coarse aggregates, testing & limits

Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates are subjected to a specified load under standardized conditions. • Aggregate crushing value is a numerical index of the strength of the aggregate and it is used in construction of roads and pavements. 51.

Stone Crushing Machine - Aggregate crushing flakiness

Aggregate crushing flakiness The Handling Materials of Aggregate crushing flakiness:pebble, calcite, granite, quartz, concrete, dolomite, bluestone, iron ore, limestone, iron ore, coal gangue, construction waste, ferrosilicon, basalt, sandstone, rocks, ore, glass, cement clinker and some metal. Send Message Get a Quote

Aggregate Testing Equipment - Agoma Group

We offer Air Entrainment Meter, Aggregate Impact Value Test Apparatus, Aggregate Crushing Value Test Apparatus, Los Angeles Abrasion Testing Machine, Flakiness & Elongation Index Test Gauges and other types of Aggregate Testing Equipment. Our array of cutting -edge and sophisticated aggregate testing equipment are dependable and assure highest

how to improve flakiness index on a aggregate crushing

When aggregates are crushed rock, they shall consist of clean, hard, durable, angular rock (ii) The Flakiness Index of each separate sized coarse aggregate, . relevant Size 20 Type N mix with an increase in bitumen content of % by max of the total mix. »More detailed

Determination of Flakiness and Elongation Index of Coarse

To calculate the flakiness index of the entire sample of aggregates, the first weight of each fraction of aggregate passing and retained on the specified set of sieves is noted. As an example, Let 200 pieces of the aggregate passing 50 mm sieve and retained on 40 mm sieve be = W 1 gram. Each of the particles from this fraction of aggregate is

Aggregate Crushing Value Test - Procedure And Result

For the Aggregate crushing value test, an aggregate sample passing through 12.5 mm IS sieve and retained on 10mm IS sieve is selected and dried to a temperature of 105 ºC to 110 ºC then cooled to room temperature. To fill the cylindrical measure mould about 6.5 kg of a sample of aggregate is sufficient.

AS 1141-1974 Methods for sampling and testing aggregates

Defines a method for determination of the aggregate crushing value by tamping a measured mass of sieved material in a standard cylinder, crushing with a plunger to determine the mass passing a 2.36 mm sieve.The results of using material of different nominal sizes may not be comparable.

Aggregates - SlideShare

Tests On Aggregate:- 10 The test usually conducted on coarse aggregates are 1. Aggregate Crushing Value 2. Aggregate Impact Value 3. Aggregate Abrasion Value 4. Particle Size 5. Flakiness &Elongation Index 6. Specific Gravity And Water Absorption 8/14/2016Prepared by AKHTAR KAMAL 11. 1) Impact Value Test 11 1.


According to results of sieve analysis, Aggregate crushing value (ACV), flakiness index and California Bearing Ratio (CBR), 30% of Crushed Stone Aggregate (CSA) can be replaced by cinder gravels

Flakiness index and Elongation Index of Coarse Aggregates

to determine the flakiness index of the given aggregates APPARATUS: The apparatus for the shape tests consists of the following: (i) A standard thickness gauge (ii) A standard length gauge (iii) IS sieves of sizes 63, 50 40, 31.5, 25, 20, 16, 12.5,10 and 6.3mm (iv) A balance of capacity 5kg, readable and accurate up to 1 gm. THEORY: The

aggregates - Al Farez

aggregates cement and concrete items page abrasion 241-243 aggregate crushing 238 aggregate crushing value (aCV) 239 aggregate gauge (shape index) 240 andreasen pipette 250 bulk density measure 250 deval 242 dorry 245 Filler compaction 251 Flakiness index grid sieves 240 Gasometer 245 Hydrostatic weighing table 247

Flakiness and Elongation of aggregates and Concrete properties

Flakiness and Elongation of aggregates and Concrete properties the particle shape depends not only on the nature of the parent material but also on the type of crusher and its reduction ratio

7 Lab Tests on Aggregates to Make Better Concrete for

If the aggregate crushing value is less than 10, it signifies an exceptionally strong aggregate. Whereas, if the crushing value is 35 or above, it would normally be considered as weak aggregate. After performing the test, the crushed material is separated and calculated in terms of percentage of the original weight taken in the mould.

PPT – Flakiness Index Test PowerPoint presentation | free to

Flakey is the term applied to aggregate or chippings that are flat and thin with respect to their length or width, Aggregate particles are said to be flakey when their thickness is less than 0.6 of their mean size. The flakiness index is found by expressing the weight of the flakey aggregate as a percentage of the aggregate tested. Crushing Value

Flakiness Index and Elongation Index of Coarse Aggregates

The Flakiness Index of aggregates is the percentage by weight of particles whose least dimension (thickness) is less than three- fifths (0.6times) of their mean dimension. This test does not apply to sizes smaller than 6.3mm.The Elongation index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is

Aggregates determinations. 1B – ILT – Interlaboratory Test

ILT CODE: ILT-U-1718 Description: Determination of density (Particle density and water absorption of aggregate between 40mm and 5mm); particle shape `section 105.1: Flakiness index;; particle shape Section 105.2: Elongation index of coarse aggregate; testing aggregates Part 103: particle size distribution Section 103.1: Sieve tests; determination of particle shape.

Pavement materials: Aggregates - IIT Bombay

Aggregates which are flaky or elongated are detrimental to higher workability and stability of mixes. The flakiness index is defined as the percentage by weight of aggregate particles whose least dimension is less than 0.6 times their mean size. Test procedure had been standardized in India (IS:2386 part-I)

Aggregates - Burgan Equipment

Flakiness sieve, 7 2 x 40 mm slot 47-D0415/3 Flakiness sieve, 10 2 x 50 mm slot Ordering information Individual sieves 47-D0418/01 Bar sieve (Aggregate grid), 2 50 mm opening 47-D0418/02 Bar sieve (Aggregate grid), 3 15 mm opening 47-D0418/03 Bar sieve (Aggregate grid), 4 00 mm opening 47-D0418/04 Bar sieve (Aggregate grid), 5 00 mm

Flakiness And Elongation Index Test Of Coarse Aggregate

Flakiness Index = weight of aggregate retained on length gauge of 10 mm to 6.3 mm (W2) / _ Total weight of aggregate sample taken (W1) = (W2/W1) x 100 For example, Weight of aggregate retained on length gauge of 10 mm to 6.3mm(W2) = 150 gm and Total weight of aggregate sample = 1000 gm

Lab Test on Aggregates at Site - CivilJungle

Aggregate Crushing Value, % = (B / A) x100 To determine the Flakiness of particles of Coarse aggregate / test on coarse aggregate more significant than 6.3 mm

250+ TOP MCQs on Testing of Aggregates and Answers

Clarification: The aggregate crushing value provides a relative measure of a maximum value of 40%age is allowed for WBM base course in Indian conditions. 7. Aggregates to be used for wearing course, the impact value shouldn’t exceed ________ percent.