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is code allowble flakiness in aggregats

AGGREGATE FLAKINESS INDEX VALUE (IS:2386-Part 1-1963

ObjectiveReferencestandardsEquipment & ApparatusPreparation SampleProcedureCalculationSafety & PrecautionsFor determination of flakiness index of coarse aggregate, where the size of the coarse aggregate are larger than 6.3mm .See more on civilblogPublished: May 08, 2013

Flakiness Index Test on Aggregates for Shape

Apr 28, 2016· 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

Flakiness and Elongation Index of Aggregate

ObjectiveReferenceProcedureCalculationParticle 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. Consequently, the cement content must also be increased to maintain the water-cement ratio. Generally, flat and elongated particles are avoided or are limited to about 15 % by weight of the total aggregate.

Flakiness Index Test for Aggregates Civil Engineering

Flakiness Index = [W 2 W 1] x 100. Where, W 2 = Weight passed from 0.6 x d mean size. W 1 = Total weight of aggregates. Flakiness Index of aggregates used in road construction should be less than 15% and normally does not exceed 25%. RELEVANCE AND IMPORTANCE It is not desirable to use flaky particles in construction of roads especially in

Flakiness Index and Elongation Index Test on Coarse Aggregates

Feb 23, 2010· 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. Thus, evaluation of shape of the

7.3. Shape Tests for Aggregates 7.3.1 Flakiness index

Tests For Aggregates And Bricks MAY 2001 Page 7.9 7.3. Shape Tests for Aggregates 7.3.1 Flakiness index 7.3.1.1 Introduction. Flaky or elongated materials, when used in the construction of a pavement, may cause the pavement to fail due to the preferred orientation that the aggregates take under repeated loading and vibration.

Exp 1 Flakiness and Elongation Index Civil Engineers PK

Experiment No.1 Flakiness and Elongation of coarse Aggregates. The dimensions of slots of the apparatus used in your experiment and figured in your article is as follows:- For elongation spokes, the distance is 1.8times the average of the sieve sizes used to separate the group, and 0.6times the average of the sieve sizes is the width of the

(PDF) Determination of the Flakiness and the Elongation

Determination of the Flakiness and the Elongation Index for the Given Aggregate Sample.

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

Determination of flakiness index, Determination of elongation index, and Determination of angularity number. 2. SIEVE ANALYSIS 2.1 Object This method covers the procedure for determination of particle size distribution of fine, coarse and all-in-aggregates by sieving or screening. 2.2 Apparatus

IS 383 (1970): Specification for Coarse and Fine

Sep 25, 1970· 0.2.1 The requirements for aggregates for mass concrete have been included and it is proposed to withdraw IS: 515-1959*when this standard is printed. 0.3 The limiting values for the permissible deleterious materials in the aggregates, aggregate abrasion value and soundness test for aggregates

Flakiness and Elongation Index of 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.

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

Determination of flakiness index, Determination of elongation index, and Determination of angularity number. 2. SIEVE ANALYSIS 2.1 Object This method covers the procedure for determination of particle size distribution of fine, coarse and all-in-aggregates by sieving or screening. 2.2 Apparatus

MATERIALS METHOD Subject Code: 7.42-1

Determine the Flakiness Index (FI). The flakiness index is a measure of the percent, by weight, of flat aggregate particles. The maximum allowable flakiness index is 25. Flakiness Gauge Dimensions 4.1 Prepare an aggregate sample according to Step 1, gradation 4.2 Keep individual size fractions of aggregate retained on the No. 4 and larger sieves

FLAKINESS AND ELONGATION INDEX OF AGGREGATE

particles are avoided or are limited to about 15 % by weight of the total aggregate. 2. Apparatus Required Fig. 1: Balance Balance should be able to weigh upto 1 g. Fig. 2: Sieves 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

Elongation index and flakiness index of coarse 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 and Elongation test of Aggregate as per IS 2386

Sep 09, 2017· Please watch: "Bulk density of aggregate coarse or fine as per IS 2386, hardness test of aggregate" https://youtube/watch?v=NM-i_yq8VpY -~-~~-~~~-~~-.

Author: Primitive Survival Technology

Aggregate Testing Standards — EnviroMINE, Inc.

Dec 24, 2015· Aggregate is classified into two general sizes: coarse grained and fine grained. Coarse aggregate is rock retained on a 3/8-inch (#4 U.S. sieve). Fine aggregates pass the 3/8-inch sieve and are retained on a #200 U.S. sieve. 6. Fine Aggregate. Fine aggregate consists of natural sand, manufactured sand, or a combination.

Flakiness and Elongation Test (BS 812: Part 3) seperti

Mar 03, 2012· The value that we get from this test is 15.1% for flakiness and not exceeds 20% the JKR requirement. Elongation value is 0% because the aggregate is rounded so no any retain value. Aggregate quality for road construction will also influence the road performance.

AGGREGATE ELONGATION INDEX VALUE (IS:2386-Part 1-1963

May 08, 2013· Objective For determination of elongation index of coarse aggregate, where the size of the coarse aggregate are larger than 6.3 mm. Reference Standards IS: 2386 (Part I) 1963 Method of test for aggregates for concrete (Part I) Particle size and shape. Equipment & Apparatus Length gauge Sieves (63mm,50mm,40mm,31.5mm,25mm,20mm,16mm,12.5mm,10mm) Balance (0-10kg) Oven

Recommended limits for aggegates SlideShare

Sep 12, 2011· 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 the fine aggregates are predominantly of one size (e.g. dune and beachsands).

Elongation Index Test on Coarse Aggreagtes

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. Necessity of Elongation Index Test Presence

Effect of Aggregate Flakiness on the Compressive Strength

effect of aggregate Flakiness on the Compressive strength of Concrete Cubes 31 of flaky aggregates of 8, 10 and 12 mm size passing in flaky sieve apparatus with cement, sand, and water. similarly fifth type of mix conditions having 90% of normal aggregate with 10% replacement of flaky aggregate of

Pavement materials: Aggregates

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)

Flakiness And Elongation Index, Properties and Testing of

The amount of flakiness is denoted by flakiness index. Flakiness index is given as the percentage by weight of particles in the sample of aggregate whose least dimension is less than 3/5 of the mean dimension (i.e. mean sieve size fraction to which the particle belongs).

FLAKINESS AND ELONGATION INDEX OF AGGREGATE

particles are avoided or are limited to about 15 % by weight of the total aggregate. 2. Apparatus Required Fig. 1: Balance Balance should be able to weigh upto 1 g. Fig. 2: Sieves 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

Flakiness And Elongation Index, Properties and Testing of

The amount of flakiness is denoted by flakiness index. Flakiness index is given as the percentage by weight of particles in the sample of aggregate whose least dimension is less than 3/5 of the mean dimension (i.e. mean sieve size fraction to which the particle belongs).

Combined effect of flaky and elongated aggregates on

Some states have recommended changing the definition of flat and elongated aggregates from 5:1 to 3:1 and an increase in the maximum allowable percentage of flat and elongated (F&E) particles to

What is the significance of Flakiness Index and Elongation

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.

Flakiness and Elongation Test (BS 812: Part 3) seperti

Mar 03, 2012· The value that we get from this test is 15.1% for flakiness and not exceeds 20% the JKR requirement. Elongation value is 0% because the aggregate is rounded so no any retain value. Aggregate quality for road construction will also influence the road performance.

AGGREGATE ELONGATION INDEX VALUE (IS:2386-Part 1-1963

May 08, 2013· Objective For determination of elongation index of coarse aggregate, where the size of the coarse aggregate are larger than 6.3 mm. Reference Standards IS: 2386 (Part I) 1963 Method of test for aggregates for concrete (Part I) Particle size and shape. Equipment & Apparatus Length gauge Sieves (63mm,50mm,40mm,31.5mm,25mm,20mm,16mm,12.5mm,10mm) Balance (0-10kg) Oven

Pavement materials: Aggregates

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)

ETA-04-01 Ballast Specification Version 1.2 Master Copy

6.6 Flakiness Index When determined in accordance with AS 1141.15 the proportion of flaky particles in the ballast material retained on the 6.70 mm test sieve shall not exceed 30%. 6.7 Crushed Particles of Coarse Aggregate When determined in accordance with AS

Maximum Allowable Quantity Per Control Area UpCodes

The maximum allowable quantity per control area shall be as specified in Tables 5003.1.1(1) through 5003.1.1(4).. For retail and wholesale storage and display in Group M occupancies and Group S storage, see Section 5003.11.. TABLE 5003.1.1(1) MAXIMUM ALLOWABLE QUANTITY PER CONTROL AREA OF HAZARDOUS MATERIALS POSING A PHYSICAL HAZARD a, j, m, n, p

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

IS : 2386 (Part IV) ‘- 1963 2.2 Apparatus The apparatus for the standard test shall consist of following : a) A 15-cm diameter open-ended steel cylinder, with plunger and base-plate, of the general form and dimensions shown in Fig. 1.

Google Testing Blog: Flaky Tests at Google and How We

May 27, 2016· In summary, test flakiness is an important problem, and Google is continuing to invest in detecting, mitigating, tracking, and fixing test flakiness throughout our code base. For example: We have a new team dedicated to providing accurate and timely information about test flakiness to help developers and build monitors so that they know whether

To evaluete the thickness and the elongation index of the aggregates particles, thickness gauge code 47-D0540 and length gauge code 47-D0541 can be used. See link to other products below. More + Ordering info; Ordering info Single units 47-D0415/1 Flakiness sieve 4.9x30 mm slot 47-D0415/2 Flakiness sieve 7.2x40 mm slot 47-D0415/3 Flakiness

Is the 'Combined Flakiness and Elongation Index' of

It is mentioned in the test procedure (BIS/MoRTH) that while doing combined flakiness and elongation test, the flaky aggregates should be separated initially from the test sample, and the rest is

Flakiness Gauge for Classification of Aggregate

The flakiness Index of an aggregate sample is found by separating the flaky particles and expressing their mass as a percentage of the mass of the sample tested. The test is not applicable to material passing a 6.30 mm BS test sieve or retained on a 63.0 mm BS test sieve.