2021-11-21 Aggregate shape, size, and surface texture majorly affect the properties of freshly mixed concrete more than the properties of hardened concrete.. Angular, flaky, rough-textured, and elongated aggregate particles require more water to produce
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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 ...
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2010-2-23 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 is not applicable to sizes smaller than 6.3mm. The Elongation index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is ...
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Apparatus Required IS Sieve for Coarse Aggregate(25mm,20mm,16mm,12.5mm,10mm6.3mm) Weighing balance Thickness Gauge The procedure of the Test Check balance Metal gauge of Flakiness Indices. Subdivision using the sample divider or quartering method select sufficient quantity of test sample for testing. Place the test sample on the tray in an
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2020-3-29 Flakiness index of aggregate test is conducted on coarse aggregates sample to estimate the shape of aggregates. For cement concrete types and base coarse and bituminous-construction, the presentence of flaky and elongated aggregate particles are considered undesirable as they may cause inherent weakness with possibility of breaking down under heavy loads.
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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 4791-10: Standard Test Method for Flat Particles, Elongated Particles or Flat Elongated Particles in Coarse Aggregates, []
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2021-4-6 The presence of elongated particles in the aggregate is undesirable for construction. Also, this shape test is made in coarse aggregate. The elongation shape test is not applicable for aggregates with a smaller size than 6.3 mm. For finding the flakiness index,
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Download scientific diagram The Results of Flakiness Index Test for Coarse Aggregates and Flakiness Index Limits for Dense Graded Asphalt Based on Australian Standards. from publication ...
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2013-3-6 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.
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2020-3-29 Flakiness index of aggregate test is conducted on coarse aggregates sample to estimate the shape of aggregates. For cement concrete types and base coarse and bituminous-construction, the presentence of flaky and elongated aggregate particles are considered undesirable as they may cause inherent weakness with possibility of breaking down under heavy loads.
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Apparatus Required IS Sieve for Coarse Aggregate(25mm,20mm,16mm,12.5mm,10mm6.3mm) Weighing balance Thickness Gauge The procedure of the Test Check balance Metal gauge of Flakiness Indices. Subdivision using the sample divider or quartering method select sufficient quantity of test sample for testing. Place the test sample on the tray in an
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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 ...
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Download scientific diagram The Results of Flakiness Index Test for Coarse Aggregates and Flakiness Index Limits for Dense Graded Asphalt Based on Australian Standards. from publication ...
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2021-6-11 Test Procedure. Sieve the aggregate particles and divide them into groups such that the particle sizes in each group are closely related, for example, 2.5-2 in., 1.5-0.75 in., etc. The intent of dividing the sample into factions is to find the individual flakiness index
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For crushed aggregate, the particle shape and surface texture depend on the nature of the parent material and on the type of crusher and its reduction ratio. The flakiness index is the weight of flaky particles as a % of the sample weight. Elongation index is defined similarly.
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2018-2-1 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
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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. Rounded aggregates are preferred in concrete roads (rigid pavements) as the workability of ...
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2020-3-29 Elongation index Test of aggregate is conducted on coarse aggregates sample to estimate the shape of aggregates. For cement concrete types and base coarse construction and bituminous-construction, the presentence of flaky and elongated aggregate particles are considered undesirable as they may cause inherent weakness with possibility of breaking down under heavy loads.
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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.
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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 ...
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Apparatus Required IS Sieve for Coarse Aggregate(25mm,20mm,16mm,12.5mm,10mm6.3mm) Weighing balance Thickness Gauge The procedure of the Test Check balance Metal gauge of Flakiness Indices. Subdivision using the sample divider or quartering method select sufficient quantity of test sample for testing. Place the test sample on the tray in an
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2014-11-24 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
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Download scientific diagram The Results of Flakiness Index Test for Coarse Aggregates and Flakiness Index Limits for Dense Graded Asphalt Based on Australian Standards. from publication ...
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2021-6-11 Test Procedure. Sieve the aggregate particles and divide them into groups such that the particle sizes in each group are closely related, for example, 2.5-2 in., 1.5-0.75 in., etc. The intent of dividing the sample into factions is to find the individual flakiness index
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Elongated aggregate particles can also increase the risk of segregation during handling and placing the concrete and can be more difficult to pump. In the UK the quantity of flat or elongated particles is called flakiness. The flakiness of the aggregates can be determined using a
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For crushed aggregate, the particle shape and surface texture depend on the nature of the parent material and on the type of crusher and its reduction ratio. The flakiness index is the weight of flaky particles as a % of the sample weight. Elongation index is defined similarly.
Read More
2018-2-1 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
Read More
2020-3-29 Elongation index Test of aggregate is conducted on coarse aggregates sample to estimate the shape of aggregates. For cement concrete types and base coarse construction and bituminous-construction, the presentence of flaky and elongated aggregate particles are considered undesirable as they may cause inherent weakness with possibility of breaking down under heavy loads.
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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.
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