
Flakiness Index = Weight of aggregate passed through width gauge 10 mm to 6.3 mm (W2) / Total weight of aggregate sample taken (W1) = (W2/W1) x 100. For example, Weight of aggregate passed through width gauge of 10 mm to 6.3mm(W2) = 200 gm and Total weight of aggregate sample = 1000 gm. Flakiness Index = (200 gm / 1000 gm) x 100 = 20%. Result :

processor flakiness index coarse aggregate Manual of Aggregate Quality Test Procedures Illinois Test Procedure 205 Insoluble Residue and Magnesium Oxide In Coarse Aggregate 73 Illinois Test Procedure 327 Resistance of Coarse Aggregate to Degradation by Abrasion in the MicroDeval Apparatus 77 Hard copies uncontrolled .

Processor flakiness index coarse aggregate. 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. . coarse aggregate used in pervious concrete is

Processor Flakiness Index Coarse Aggregate. Aggregates properties . Technical information Aggregates The smaller the flakiness index, Application of aggregate products. The consumers of aggregates are companies that operate in various fields of the construction . Get Price.

processor flakiness index coarse aggregate. Soil, Aggregates and Laboratory A Testing Soil, Aggregates and Laboratory ... Aggregates is a broad category of coarse particulate material used in

b) Flakiness index c) Sieve analysis obtained from this test. A data sheet is given as Form 7.3.1. 7.3.2 Elongation index 7.3.2.1 Scope. The scope of this test is to provide test methods for determining the elongation index of coarse aggregate. An aggregate is classified as being elongated if it has a

processor flakiness index coarse aggregate edogawafr The flakiness index is taken as the total weight of the A study on types and quality of aggregates used in impurities for fine aggregate and flakiness index, elongation index, aggregate impact value, aggregate crushing value, 10%fines value and Los Angeles abrasion value for coarse aggregate.

Sieves required are 63, 50, 40, 31.5, 25, 20, 16, 12.5, 10 and 6.3 mm (Based on requirement and Gradation of Aggregate). Fig. 3: Thickness Gauge- For Flakiness Index: Fig. 4: Length Gauge- For Elongation Index. Length Gauge have length equal to 1.8 times the mean dimension of the aggregate.

Sep 05, 2018 In this video , i had given full detail practical procedure of determining flakiness and elongation index of coarse aggregate.


Sieves required are 63, 50, 40, 31.5, 25, 20, 16, 12.5, 10 and 6.3 mm (Based on requirement and Gradation of Aggregate). Fig. 3: Thickness Gauge- For Flakiness Index: Fig. 4: Length Gauge- For Elongation Index. Length Gauge have length equal to 1.8 times the mean dimension of the aggregate.

This test is carried out to determine the flakiness index of aggregates. Apparatus Needed. 1. Thickness/Flakiness Index Gauge 2. Aggregate sample to be tested 3. Weighing balance 4. IS sieves of the following mesh sizes – 63mm, 50mm, 40mm, 31.5mm, 25mm, 20mm, 16mm, 12.5mm, 10mm and 6.3mm. Procedures. 1. Perform the sieve analysis on the given ...

The flakiness index of course aggregate is defined in percentage by weight of aggregate particles and least dimension (thickness) of those particles should not be less than 0.6 times their mean area. Flakiness index test is not applicable for aggregates sizes smaller than 6.3mm. Flaky or elongated course aggregates are disadvantageous to higher ...

May 08, 2013 Objective For determination of flakiness index of coarse aggregate, where the size of the coarse aggregate are larger than 6.3mm . Reference Standards IS : 2386 (Part I) – 1963 – Method of test for aggregates for concrete (Part I) Particle size and shape. Equipment Apparatus Thickness gauge Sieves [63, 50, 40, 31.5, 25, []

mentions that coarse aggregate shall not contain pieces of disintegrated stones, soft, flaky, elongated particles etc. But, the limits for the same are not mentioned therein. d) MORTH and NPC specifications limit Flakiness index and Elongation index to 15% each.

Nov 16, 2019 Flakiness Index. The flakiness index of aggregates is the percentages by weight of particles whose least dimension (thickness) is less than 3/5 th (0.6) of their mean dimension. The test does not apply to sizes smaller than 6.3 mm. [For example, the mean sieve size for an aggregate piece passing through 50 mm and retained on 40 mm sieve is (50 ...

Apr 08, 2013 Specific Gravity Water Absorption of Coarse Aggregate - Duration: 17:37. NCTEL 327,496 views. ... NCTEL 176,338 views. 20:22. Flakiness and Elongation Index of aggregatewith calculation ...

weight of coarse aggregate is undesirable. The test is carried on aggregate sizes between 63 mm and 6.3 mm. Apparatus: 1- A balance of accuracy of 0.1% of the sample weight. 2- A set of sieves. 3- A special scale for elongation index. 4- A special scale for flakiness index.

The particle shape of aggregates is determined by the percentages of flaky and elongated particles contained in it. For base course and construction of bituminous and cement concrete types, the presence of flaky and elongated particles are considered undesirable as these cause inherent weakness with possibilities of breaking down under heavy loads.

Elongation index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is greater than one and four-fifth times (1.8 times or 9/5 times) their mean dimension. It is measured on particles passing through mesh size of 63mm and retained on mesh size of 6.3mm. Contents:Necessity of Elongation Index TestApparatus requiredTest [hellip;]

Thickness Gauge (Flakiness Index) is a slotted stainless steel gauge for rapid hand trying of particles from the seven sieve fractions to determine the flakiness index. Length Gauge (Elongation Index) has six labeled openings between metal pins for measuring length of particles from each of the six sieve cuts below 50mm, for elongation index determinations.

1. The Flakiness Index on an aggregate is = Total weight passing Flakiness Gauge x 100 / Total weight of test sample =_____(%) 2. The Elongation Index on an aggregate is = Total weight retained on Elongation Gauge x 100 / Total weight of test sample =_____(%) 7. Video Flakiness and Elongation Index 8. Download D o w n l o a d P D F

Dec 12, 2017 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.

The Elongation index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is greater than nine-fifths (1.8times) their mean dimension. Flakiness and elongation tests are not applicable to sizes smaller than 6.3mm. Test procedure:

The flakiness index of course aggregate is defined in percentage by weight of aggregate particles and least dimension (thickness) of those particles should not be less than 0.6 times their mean area. Flakiness index test is not applicable for aggregates sizes smaller than 6.3mm. Flaky or elongated course aggregates are disadvantageous to higher ...

The Elongation index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is greater than nine-fifths (1.8times) their mean dimension. Flakiness and elongation tests are not applicable to sizes smaller than 6.3mm. Test procedure:

1. The Flakiness Index on an aggregate is = Total weight passing Flakiness Gauge x 100 / Total weight of test sample =_____(%) 2. The Elongation Index on an aggregate is = Total weight retained on Elongation Gauge x 100 / Total weight of test sample =_____(%) 7. Video Flakiness and Elongation Index 8. Download D o w n l o a d P D F

Get this from a library! Flakiness index of course aggregates. [Standards South Africa.] -- This standard specifies a method for determining the flakiness index of coarse aggregate that passes a sieve of aperture size 75 mm and that is retained on a sieve of aperture size 4 750 om.

• ASTM 4791-10: Standard Test Method for Flat Particles, Elongated Particles or Flat Elongated Particles in Coarse Aggregates, American Society for Testing and Materials. TEST DESCRIPTION: Flakiness Index of aggregate is the percentage by weight of aggregate particles whose least dimension is less than 0.6 of their mean dimensions.

Nov 16, 2019 Flakiness Index. The flakiness index of aggregates is the percentages by weight of particles whose least dimension (thickness) is less than 3/5 th (0.6) of their mean dimension. The test does not apply to sizes smaller than 6.3 mm. [For example, the mean sieve size for an aggregate piece passing through 50 mm and retained on 40 mm sieve is (50 ...

Dec 12, 2017 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.

weight of coarse aggregate is undesirable. The test is carried on aggregate sizes between 63 mm and 6.3 mm. Apparatus: 1- A balance of accuracy of 0.1% of the sample weight. 2- A set of sieves. 3- A special scale for elongation index. 4- A special scale for flakiness index.

Flakiness Index is the percentage by weight of particles in it, whose least dimension (i.e. thickness) is less than three-fifths of its mean dimension. Elongation Index is the percentage by weight of particles in it, whose largest dimension (i.e. length) is greater than one and four-fifths times its mean dimension.

Elongation index is the % by weight of particles whose greater dimension is greater than 4/5 of the mean dimension ELONGATION INDEX = (wt of aggregate retained on specified gauge) / (total wt of aggregate taken) Flakiness index is the % by weight of particles whose least

The flakiness of aggregate is determined by measuring the thickness of individual particles. Hence we offer thickness gauge and length gauge to check flakiness and elongation index of the aggregate respectively. Specifications: Model: Description: Flakiness Gauge SL-AG-001: Used for Determination of flakiness index of coarse aggregates. It ...

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 ... For all type of coarse aggregate, 75 cubes (150 x 150 mm) were cast to permit the compressive strength to be observed ...

Elongation index and flakiness index of coarse aggregate (BS 812 Part:1) Scope: The particle is considered as elongated if its length is more than 1.8 times the mean sieve size of the size fraction to which the particle belongs. Similarly, the particle is considered as flaky if its thickness is less than 0.6

The flakiness index test (FI) is not applicable passing 6.30 mm or retaining 63.0 mm test sieve. Testing procedure. The dried aggregates sample is allowed to passing and retained on a set of sieve. The weight of retained aggregate on each sieve is measured and determined the percentage of retained.