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.

processor flakiness index coarse aggregate; ISO/DIS 19595(en), Natural aggregates for concrete. 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 Get Price .

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

The Flakiness Index of a coarse aggregate is the mass of particles in that aggregate, expressed as a percentage of the total mass of that aggregate, which will pass the slot or slots of specified width for the appropriate size fraction, as given in Table I below.

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

Apr 08, 2013· How to Pour a Concrete Sand-Wash Finished Driveway and Wooden Stamped Concrete Patio Part 2 Duration: 20:52. Odell Complete Concrete Recommended for you

Flakiness and Elongation Index EXPERIMENT NO.1: Determination of the flakiness and the elongation index for the given aggregate. sample. SCOPE & SIGNIFICANCE:. This test is used to determine the particle shape of the aggregate and each particle shape being preferred under specific conditions.

LASER-BASED APPROACH FOR DETERMINING FLAKINESS INDEX OF AGGREGATES USED IN PAVEMENTS J ANOCHIE-BOATENG, J KOMBA and J O’CONNELL to compute flakiness index of the aggregate samples. The computed flakiness indices the standard test method used for the determination of flakiness index of coarse aggregates is contained in TMH1 Method B3

Apr 08, 2013· How to Pour a Concrete Sand-Wash Finished Driveway and Wooden Stamped Concrete Patio Part 2 Duration: 20:52. Odell Complete Concrete Recommended for you

Flakiness and Elongation Index EXPERIMENT NO.1: Determination of the flakiness and the elongation index for the given aggregate. sample. SCOPE & SIGNIFICANCE:. This test is used to determine the particle shape of the aggregate and each

LASER-BASED APPROACH FOR DETERMINING FLAKINESS INDEX OF AGGREGATES USED IN PAVEMENTS J ANOCHIE-BOATENG, J KOMBA and J O’CONNELL to compute flakiness index of the aggregate samples. The computed flakiness indices the standard test method used for the determination of flakiness index of coarse aggregates is contained in TMH1 Method B3

Jan 16, 2018· Flakiness index test of aggregates FLAKINESS & ELONGATION INDEX OF COARSE AGGREGATE HIGHWAY GUIDE 29,926 views. 28:38. Flakiness and Elongation test of Aggregate as per IS 2386 part 1

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The Flakiness Index of an aggregate is the mass of particles in that aggregate which will pass the appropriate slot or slots for the individual size fraction expressed as a percentage of the total mass of that aggregate. The width of the slots is de termined by multiplying the mean of upper and lower sieve size for the slot by 0.6. 933.03 Equipment

Flakiness index how to improve flakiness index on a aggregate crushing plant processor flakiness index coarse aggregate flackiness index of vsi crusher flackiness of vsi crusher crusher role in flackiness of aggregate this makes the impact crus. morethere will; France Crusher Aggregate

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.

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

More flaky the aggregate, the density decreases. Means compaction of aggregates is less and voids are more. So more fines are required to take up this voids. Flaky aggregates have more area. In both cases more cementation material is required to b...

described by flakiness index or shape index (according EN 933-3, EN 933-4). 14.5.1 Flakiness Index The flakiness index (FI) is calculated as the mass of particles that pass the bar sieves with parallel slots,expressed as a percentage of the mass of the test portion. 14.5.2 Shape Index Shape index is determined only on the coarse aggregates.

ELONGATION INDEX = (wt of aggregate retained on specified gauge) / (total wt of aggregate taken) Flakiness index is the % by weight of particles whose least dimension is lesser than 3/5 of the mean dimension what do u mean by elongation & flakiness of aggregate?.. Answer / feroz.

Dec 24, 2018· The particle shape of aggregate is determined by the percentages of flaky and elongated particles contained in it. In case of gravel it is determined by its Angularity Number. Aggregates which are Flaky and elongated are detrimental to the higher

Flakiness & Elongation of Aggregate; Determinations for the flakiness index and flakiness and elongation of aggregate use a British Standard classification system consisting of a Thickness Gauge for determining flakiness index and a metal Length Gauge for determining elongation index. Aggregate is separated into seven sieve fractions from 63

described by flakiness index or shape index (according EN 933-3, EN 933-4). 14.5.1 Flakiness Index The flakiness index (FI) is calculated as the mass of particles that pass the bar sieves with parallel slots,expressed as a percentage of the mass of the test portion. 14.5.2 Shape Index Shape index is determined only on the coarse aggregates.

ELONGATION INDEX = (wt of aggregate retained on specified gauge) / (total wt of aggregate taken) Flakiness index is the % by weight of particles whose least dimension is lesser than 3/5 of the mean dimension what do u mean by elongation & flakiness of aggregate?.. Answer / feroz.

Dec 24, 2018· The particle shape of aggregate is determined by the percentages of flaky and elongated particles contained in it. In case of gravel it is determined by its Angularity Number. Aggregates which are Flaky and elongated are detrimental to the higher

Flakiness & Elongation of Aggregate; Determinations for the flakiness index and flakiness and elongation of aggregate use a British Standard classification system consisting of a Thickness Gauge for determining flakiness index and a metal Length Gauge for determining elongation index. Aggregate is separated into seven sieve fractions from 63

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 is not applicable 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

Evaluation Coarse Aggregate • Test methods in AS 1141 Particle density Particle size distribution Particle shape Flakiness Index Aggregate Crushing Value Wet-dry Strength Variation Los Angeles Abrasion Loss Sodium Sulphate Soundness Polished Aggregate Friction Value

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

Definition of Flakiness index and Elongation index. April 7, 2013 by admin 2 Comments. Flakiness index. According to BS specifications flakiness index of the aggregate used for the road construction should not be greater than 35 % and Elongation index should not be greater than 45 %.

DETERMINING FLAKINESS INDEX TXDOT DESIGNATION: TEX-224-F CONSTRUCTION DIVISION 2 2 EFFECTIVE DATE: AUGUST 2016 3.3 Allow the sample to cool to room temperature. Quarter the aggregate sample to obtain a minimum of 200 particles passing the 7/8

Manual of Aggregate Quality Test Procedures April 16, 2019 HARD COPIES UNCONTROLLED Page i of iv Revision History and Document Control The Manual of Aggregate Quality Test Procedures will be reviewed by the Aggregate

other aggregate particles. When the coarse aggregate does fracture, the gradation will likely change which may be detrimental to the mix. Additionally, flat and elongated particles of aggregate, for some construction uses, may interfere with consolidation and may result in harsh, difficult to place mixtures.

Effect of Flakiness Index on Bituminous Mixes SUREN MUHAMMAD SALIH 1 M.Tech, Dept of Transportation Engineering, JNTU College of Physical shape of coarse aggregate is a very important property in performance of the bituminous mixes in the highway pavements [1].

The standard flat and elongated particles in coarse aggregate test is: ASTM D 4791: Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregates; Background. Flat or elongated aggregate particles can, if present in sufficient number, (1) impede compaction or (2) affect HMA behavior by fracturing during compaction.

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) MORT&H and NPC specifications limit Flakiness index and Elongation index to 15% each. «

other aggregate particles. When the coarse aggregate does fracture, the gradation will likely change which may be detrimental to the mix. Additionally, flat and elongated particles of aggregate, for some construction uses, may interfere with consolidation and may result in harsh, difficult to place mixtures.

Effect of Flakiness Index on Bituminous Mixes SUREN MUHAMMAD SALIH 1 M.Tech, Dept of Transportation Engineering, JNTU College of Physical shape of coarse aggregate is a very important property in performance of the bituminous mixes in the highway pavements [1].

The standard flat and elongated particles in coarse aggregate test is: ASTM D 4791: Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregates; Background. Flat or elongated aggregate particles can, if present in sufficient number, (1) impede compaction or (2) affect HMA behavior by fracturing during compaction.

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) MORT&H and NPC specifications limit Flakiness index and Elongation index to 15% each. «

Any Concrete work before must be Test on aggregate because of sure working quality of Concrete. Difference type of test no aggregates. as per below tests point out of aggregate tests Sampling of Aggregate Tests Aggregate Crushing Value Impact Value of Coarse Aggregate Sieve Analysis Test of Coarse Aggregates Flakiness Index of Aggregate Elongation Index []

INDIANA DEPARTMENT OF TRANSPORTATION OFFICE OF MATERIALS MANAGEMENT. FLAKINESS INDEX OF AGGREGATES ITM No. 224-18. 1.0 SCOPE. 1.1 This test method describes a procedure to determine the Flakiness Index (FI) of aggregates. The FI is used as a design input to determine the rate of application of aggregate and asphalt material for seal coats.

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.

Take an aggregate sample of around 200 pieces of any fraction and weight it. Gauge each aggregate on length as well as thickness gauge. Take the weight of the aggregates which are retained from length gauge to find the elongation index and take the weight of the aggregates which passes through the thickness gauge to find the flakiness index.

Flakiness sieves: Controls aggregates testing equipment. Enter now! Used to determine if aggregate particles are to be considered flaky, i.e. their thickness is less than 0.6 of their nominal size. 15 kg complete set; To evaluete the thickness and the elongation index of the aggregates particles, thickness gauge code 47-D0540 and length

Aug 11, 2014· 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

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.

Mar 03, 2012· 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. The flakiness and elongation rocks are not suitable for road construction because this type of rocks will make the road surface not balance and easy to damage.

Testing of Coarse Aggregate. A. Shape and Size Test : The shape and size of aggregates can be determined by flakiness index and elongation index tests. Flakiness Index Test. Flakiness index is defined as the ratio of weight of aggregates whose least dimension is less than 0.6 times of their mean dimension to the weight of the sample taken.

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