observations on determination of flakiness and elongation indices

Determination of flakiness index (FI) and shape index (SI) …

Flakiness index (FI) and shape index (SI) were determined using two methods: in accordance with the European Standard and with the use of digital image analysis (reference method). Based on the obtained results it was found that there is an appropriate relationship between the European Standard method and the reference …

FLAKINESS OF AGGREGATES FOR HIGHWAY CONSTRUCTION: ITS IMPORTANCE AND

This paper describes the importance of the particle shape of aggregates in road structures, and their determination, especially using the flakiness index test. 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. ... Elongation index is ...

Determination of Flakiness Index and Elongation Index …

This document describes procedures to determine the flakiness and elongation indices of aggregate samples according to BS-1241 test standards. It involves sieving the sample into different fractions and using gauges to measure the percentage of flaky and elongated particles in each fraction by weight. Flaky particles are those where the least dimension …

Flakiness Index Test for Aggregates

This test is applicable to aggregates having size larger than 6.3mm. To calculate the flakiness index of the given sample of aggregates, the weight of each fraction of aggregates passing and retaining on the specified set …

INFLUENCE OF COMBINED FLAKINESS AND …

combined flakiness and elongation indices of 30-35%.workability(torque) values were determined at temperatures 900C, 1100C and 1300C for three gradation limits with different combined flakiness and elongation indices and graphs were plotted to validate effect of combined flakiness and elongation indices.

Elongation Index Test Lab Report, Elongation …

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 …

LASER-BASED APPROACH FOR DETERMINING …

(roundness, sphericity), angularity, flatness and elongation, flakiness, volume and surface area. The laser device has been evaluated for accuracy and repeatability (Anochie- Boateng et al, 2010). ... In South Africa, the standard test method used for the determination of flakiness index of coarse aggregates is contained in TMH1 Method …

The elongation index and flakiness index | Download

The flakiness indices of TP1 and TP5 exceed the specified limit of 25% after BS 812 Part 105.1 (BS,1989), whereas the elongation indices of all the samples except TP6 exceed the limit (<25%) of ...

TE Exp 1 LAB Report

For obtaining the combined flakiness and elongation index, flakiness test is conducted; first and the non-flaky particles of the sample will be used for conducting elongation index. All dimensions are in millimeters Figure A. 2. Schematic of Elongation Index Gauge (IS:2386 (Part-I)-1963) A OBSERVATIONS. Table A Flakiness Index Test Results

determination of flakiness index test. | PDF

1. page | 1 civil engineering deparment dcc 3122 highway lab report title determination of elongation indexvalue course / session dcc 3122 – geotechnic and highway laboratory prepare by group group a group members 1. ainunyasmine binti haslan 03dka16f2023 2. mohd iqbal naqiuddin bin zulkipli 03dka16f2018 3. mohamad amir saif …

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

Determination of materials finer than 75-micron, 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

Flakiness Index and Elongation Index of Coarse …

The Flakiness Index is the total weight of the material passing the various thickness gauges or sieves, expressed as a percentage of the total weight of the sample gauged.

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

Determination of materials finer than 75-micron, Determination of flakiness index, Determination of elongation index, and Determination of angularity number. 2. SIEVE …

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.

Flakiness Index Test of Aggregate, Shape Test on Aggregate…

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 …

FLAKINESS AND ELONGATION INDEX OF AGGREGATE

Objective. Particle shape and surface texture influence the properties of freshly mixed concrete more than the properties of hardened concrete. Rough-textured, angular, and …

Flakiness Index

Therefore, it is necessary to evaluate the shape of particles, particularly with respect to flakiness and elongation. The Flakiness Index test determines the percentage by weight of particles whose least dimension (thickness) is less than three-fifths (0.6 times) of their mean dimension. This test is not applicable to particles smaller than 6.3mm.

Determination of Flakiness and Elongation Index For The …

Determination of flakiness and elongation index for the given aggregate sample. - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. This lab report describes the whole procedure of determining flakiness and elomgation index of given aggregate sample.

Flakiness Index and Elongation Index Test on Coarse …

Shape tests on coarse aggregates such as flakiness index and elongation Index, its importance in concrete construction, methods of determination is discussed. Shape Tests on Coarse Aggregates: Following tests are conducted on coarse aggregates under shape tests: The elongation index of the given aggregates; The flakiness index of the given ...

Automated measurement of aggregate …

In order to increase the rapidity and accuracy of aggregate shape determination, a model based on a two-dimensional image analysis approach has been developed and implemented in the French VDG 40 ...

Experimental and Numerical Study on Ballast Flakiness and Elongation

In this study, first a series of large-scale direct shear tests were carried out under various vertical stresses of 50, 100, and 200 kPa to evaluate the breakage and level of fines in ballast samples categorized by the flakiness and elongation index.

Shape tests on Coarse Aggregates- Flakiness index test and Elongation

After that to determine the flakiness index separate the aggregate retained in the sieve. Then pass each aggregate through the corresponding slot in the thickness gauge. Finally, we calculate the flakiness index. The flakiness index is the total weight of material passing through the gauge to the total weight of the sample.

Flakiness Index and Elongation Index of Coarse Aggregates

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:

Flakiness Index and Elongation Index Test on …

Read definition, apparatus, IS code, procedure, observations, formula, result, lab report about flakiness and …

What Is Flakiness Index

Flakiness Index Vs Elongation Index The flakiness index measures the percentage of stones whose average minimum dimension is less than 0.6 times the mean dimension of the stones. In contrast, the elongation index gives an estimate of the total weight of a material placed on various length gauges, expressed as a percentage of the total weight …

Flakiness and Elongation Index of Aggregate

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 the length of particles from each of the six sieve cuts below 50mm, for elongation index …

Shape Tests

FLAKINESS INDEX. Elongation Index test. Elongation index is defined as the percentage by weight of the particles in it whose length is greater than 1.8 times of their mean dimension. This test is conducted to determine the length of the aggregates. When under pressure, materials having a high elongation index are more likely to distort or ...

Manual for Flakiness Index & Elongation Index Gauges

Flakiness Index & Elongation Index HM-925 OPERATING MANUAL Rev: 07/2019 PHONE: 800-444-1508 P.O. Box 200, Center, Ohio 43035-0200 740-548-7298 E-mail: customerservice@gilsonco Product Web Page: FAX: 800-255-5314 740-548-5314. TABLE 9 DIMENSIONS OF THICKNESS & LENGTH …

EFFECT OF FLAKINESS AND ELONGATION INDEX OF …

2. Increase of flakiness and elongation index decreases the stability by 16.10%. From table 14 it yields the result that combine indices of 0, 10 & 20% it satisfies the standard requirement. While 30 and 40 % fails to do so. 3. Flow is gradually decreasing with increase of flakiness and Elongation index in the mix,