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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

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Flakiness And Elongation Index Test Of Coarse Aggregate ...

2021-8-13  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. Elongation Index

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Flakiness Index Test of Aggregate, Shape Test on Aggregate ...

2020-3-29  According to BS-1241, a flakiness index should not exceed 30% irrespective of the aggregate size. Maximum permitted elongated index is 35%, 40% or 45% for aggregate size 21/2” – 2”, 11/2” - ¾” and 1/2” - ⅜”.

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Exp 1 Flakiness and Elongation Index - Civil Engineers PK

BS-1241 specifies a Flakiness index not exceeding 30% irrespective of the aggregate size. Maximum permitted Elongated index is 35, 40 or 45% for aggregate sizes 2 ½’’ – 2’’, 1 ½’’ – ¾’’ ½’’ – 3/8’’. Both Flakiness and Elongation tests are not applicable to sizes smaller then 6.3mm i.e. ¼’’ sieve.

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Flakiness Index and Elongation Index Test on Coarse ...

2010-2-23  IS sieves of sizes 63, 50 40, 31.5, 25, 20, 16, 12.5,10 and 6.3mm; A balance of capacity 5kg, readable and accurate up to 1 gm. Theory of Flakiness Index and Elongation Index Tests The particle shape of aggregates is determined by the percentages of flaky and elongated particles contained in it.

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FLAKINESS AND ELONGATION INDEX OF AGGREGATE

2019-3-11  50 40 81.00 40 25 58.5 31 25 --25 20 40.50 20 16 32.4 16 12.5 25.6 12.5 10 20.2 10 6.3 14.7 Total Table 3 : Recordings for Elongation Index 6. Calculation 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 =

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Elongation index and flakiness index of coarse aggregate ...

2014-11-24  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.

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IS 2386-1 (1963): Methods of Test for Aggregates for ...

2018-2-1  IS : 2386 ( Part I ) - 1963 Indian Standard METHODS OF TEST FOR AGGREGATES FOR CONCRETE PART I PARTICLE SIZE AND SHAPE 0. FOREWORD 0.1 This Indian Standard (rt I) was adopted by the Indian Standards Institution on 22 August 1963, after the draft finalized by the Cement

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Recommended limits for aggegates - SlideShare

2011-9-12  An aggregate with a maximum size of 14 mm is also used, mainly for precast work.Fine aggregate 5 down Normally not more than 10 % should be retained on a 5-mm sieve, and preferably not more than 10 % should pass a 150 µ m sieveNote: Where

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FLAKINESS AND ELONGATION INDEX OF AGGREGATE

2019-3-11  Sieves(mm) Retained on IS Sieves (mm) Flakiness Gauge (mm) Weight Passing on Flakiness Gauge (g) Percentage Weight Passing (%) 63 50 33.90 50 40 27.00 40 25 19.50 31.5 25 16.95 25 20 13.50 20 16 10.80 16 12.5 8.55 12.5 10 6.75 10 6.3 4.89 Total Table 2 : Recordings for Flakiness Index Passing through IS Sieves(mm) Retained on IS Sieves (mm ...

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[Solved] Flakiness index and Elongation index test is not ...

The elongation index of an aggregate is the percentage by weight of particles in it whose greatest dimension is more than 1.80 times their mean dimension. This test is not applicable to a size less than 6.30 mm. The following table shows the different test's acceptable limits on aggregates:

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Elongation index and flakiness index of coarse aggregate ...

2014-11-24  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.

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Flakiness and Elongation - PCTE

2021-8-12  The Grid Sieve Set is used to determine the flakiness index of the aggregate. All the sieves include an electrostatically painted frame and stainless steel bars with a 5 mm diameter. For sample preparation 4.5, 6.3, 8, 10, 12.5, 16, 20, 25, 31.5, 40, 50, 63, 80 and 100 mm

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Allowable flakiness value of agg.

Allowable flakiness value of agg. Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Allowable flakiness value of agg., quarry, aggregate,

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IS 2386-1 (1963): Methods of Test for Aggregates for ...

2018-2-1  IS : 2386 ( Part I ) - 1963 Indian Standard METHODS OF TEST FOR AGGREGATES FOR CONCRETE PART I PARTICLE SIZE AND SHAPE 0. FOREWORD 0.1 This Indian Standard (rt I) was adopted by the Indian Standards Institution on 22 August 1963, after the draft finalized by the Cement

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Elongation Index Test For Aggregates - Civil Engineering ...

AIM OF THE EXPERIMENT: To determine the Flakiness Index of the given sample of course aggregate. CODE OF REFERENCE: • IS 2386(Part 1):1963 Methods of Test for Aggregates of Concrete- Particle Size and Shape. Reaffirmed Dec 2016 • ASTM 4791

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IRC:109-2015 - Public.Resource.Org

2020-10-15  The value of flakiness index and elongation index so found are added up. 3.1.2: ... not vary from the low limit on one sieve to the high limit on the adjacent sieve or the vice ... for sample having aggregate passing through 37.5 mm sieve, bigger size mould of volume 2250 cc as specified in IS:2720, (Part VIII) shall be used. ...

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APPENDIX I: Draft COLTO-format specification for ...

2021-3-26  The flakiness index for surfacing asphalt and rolled-in-chippings shall not exceed the values given in table 4202/5. The grades refer to the single sized crushed stone grades as defined in sub clause 4302(b). Table 4202/5 Nominal size of aggregate (mm) Maximum flakiness index % Surfacing aggregate Rolled-in-chips (all grades)

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Lab Test on Aggregates at Site - CivilJungle

2021-8-12  Procedure of Flakiness Index of Aggregate. Each sample of 20 mm and 10mm shall be taken from the retained fraction. Each fraction shall be the gauge in turn for thickness on the metal gauge. The total amount retained on the gauge shall be weighed. Calculation Records of Flakiness Index of Aggregate. The flakiness index is the total weight of ...

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Thickness Gauge (Flakiness Index BS) – Liya Test

2021-7-26  Description. The Liya Test flakiness index is based on the flatness determination of aggregates. According to the BS standard, it is used to determine whether the amount of flat grains in the aggregate stack is within acceptable limits, ie the grain thickness (smallest size) is less than 0.6 times the average of the sieve mesh of the grain class range to which it belongs.

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Construction Standard CS3:2013 – Aggregates for Concrete

2013-7-9  Section 11 – Method for determination of flakiness index Section 12 – Method for determination of elongation index ... The grading shall comply with both the overall limits and the ... Shape of Coarse Aggregates Flakiness index of coarse natural aggregate, ≤ 30 of coarse recycled aggregate, ≤ 40 ...

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APPENDIX I: Draft COLTO-format specification for ...

2021-3-26  The flakiness index for surfacing asphalt and rolled-in-chippings shall not exceed the values given in table 4202/5. The grades refer to the single sized crushed stone grades as defined in sub clause 4302(b). Table 4202/5 Nominal size of aggregate (mm) Maximum flakiness index % Surfacing aggregate Rolled-in-chips (all grades)

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LR 4 - Flakiness and Elongation - American University of ...

Elongation Index Table 1: Minimum Mass of the Test Portion Nominal Maximum Size of Aggregate Minimum Mass of Test Portion after Rejection of Undersized/Oversized particles mm kg 40 15 28 5 20 2 14 1 10 0.5 The aggregate used in this experiment was the same sample used in the flakiness index portion of this experiment, and thus it has the same ...

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Pavement materials: Aggregates - IIT Bombay

The elongation index of an aggregate is defined as the percentage by weight of particles whose greatest dimension (length) is 1.8 times their mean dimension. This test is applicable to aggregates larger than 6.3 mm. This test is also specified in (IS:2386 Part-I). However there are no recognized limits for the elongation index.

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Pavement materials: Aggregates - NPTEL

2017-8-4  The elongation index of an aggregate is de ned as the percentage by weight of particles whose greatest dimension (length) is 1.8 times their mean dimension. This test is applicable to aggregates larger than 6.3 mm. This test is also speci ed in (IS:2386 Part-I). However there are no recognized limits for the elongation index.

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Specifications and standards for unbound aggregates and ...

1989-1-1  The limit values required are given in Table 1 and Table 2. For airport roadbase construction, requirements are nearly the same with an additional requirement of a maximum flakiness index of 15% for the material fraction retained on the 4.75 mm (ASTM no. 4) sieve.

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Stone Aggregate - Panda

2018-10-9  Aggregate grading for crusher run (G1 G3) materials Property Requirements Grading limits, % (m/m) 37,5 mm 26,5 mm passing G1 - G3 G3 sieve size, mm 53,0 - - 37,5 100 - 26,5 84-94 100 19,0 71-84 85-95 13,2 59-75 71-84 4,75 36-53 42-60 2,00 23-40

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Aggregates for Concrete - CEDD - Home

2019-6-13  17.4 Method for aggregates all larger than 10 mm (wire basket method)..... 91 17.5 Method for aggregates between 40 mm and 5 mm (gas jar method) ..... 93 17.6 Method for aggregates 10 mm nominal size and smaller

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Aggregates MCQ [Free PDF] - Objective Question Answer for ...

Flakiness index and elongation index values in excess of 15% are generally considered undesirable but in most of the cases, the Elongation index should not be greater than 45%. Statement IV – False. Flakiness index is the percentage of the weight of aggregates whose least dimension (thickness) is less than 0.6 times their mean dimension.

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