Thickness Gauge Length Gauge Specifications: Additional Information Item Code AT-215-216 Interested in this product? 24.0 APPARATUS/INSTRUMENTS 1. Get Latest Price from the seller Contact Seller tures. Sayed Sajid H.Zidani Sieve test YASMINE HASLAN Softhening point REPORT DCC2042 YASMINE HASLAN Transportation Engineering Laboratory Manual BASWESHWAR JIRWANKAR DCC3113 DETERMINATION OF AGGREGATE IMPACT VALUE. 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. For example, the flakiness index of the aggregates we can use in the construction of roads is typically less than 15%, and it should not exceed 25%. Aggregate shape, size, and surface texture majorly affect the properties of freshly mixed concrete more than the properties of hardened concrete. Note: Test can be conducted for each range of elongation gauge slot. According to IS:2386-1963, the characterization of EOF steel slag, as coarse, is done by examining the shape and size of a particle, mechanical . Steel slag's usefulness as a substitute for natural coarse aggregate in concrete is the primary goal of this research. Professor, Malla Reddy Engineering College 1venky.chamakura634@gmail.com 2 harinathchowdary1@gmail.com 3ranjithkumar65@rediffmail.com Abstract-- Flakiness & Elongation index is one of the most prominent criteria that govern behavior and performance of aggregate in the bituminous mixes. This the reason of the test being carried out. Gradation Test -ASTM 5444-98 Analysis Of Compacted Bitiminus Paving Mixture ASTM D 6927-15 ASTM D 2726-14 . Continue with Recommended Cookies. The test does not apply to sizes smaller than 6.3 mm. All rights reserved. 45 mm. Bulk Aggregate Calculator will sometimes glitch and take you a long time to try different solutions. The particle shape of aggregate can be described by the percentage of how flaky or how elongated the aggregate is. Generally, flaky and elongated aggregate are avoided or are limited to about 15 % by the weight of the total aggregate. Flakiness And Elongation Index Flakiness Index Aggregate is termed as flaky when its least dimension i e thickness is reasonably small relative to its other two dimensions i e width and or length 1 / 8. 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. Starting at $157.00. = (526/1150) X 100. Aggregate related testing such as Sieve Analysis, Flakiness & Elongation, Specific gravity & water absorption, Loss Role and Responsibilities Description of soil and rock samples. . The purpose of this document is to describe the method for determining Flakiness Index, Elongation Index and Angularity Number of the given sample of aggregate. their thickness is less than 0.6 of their nominal size. The Los Angeles Abrasion test determines the aggregate's wearing resistance and hardness. APPARTUS Standard thickness gauge. their thickness is less than 0.6 of their nominal size. Close suggestions Search Search A metal thickness gauge of the pattern shown in. Separation of Elongated Material- Each fraction shall be gauged individually for length on a metal length gauge of the pattern shown in Figure 4. Manage Settings Its accuracy is 0.1% of the weight of the test sample. Flakiness Index is the percentage by weight of particles in it, whose least dimension (i.e . Hence we offer thickness gauge and length gauge to check flakiness and elongation index of the aggregate respectively. Models: HM-38R, HM-38B. 54. The consent submitted will only be used for data processing originating from this website. Elongated Particles These are the particles having length considerably larger than the other two dimensions and it is the particle whose greater dimension is 1.8 times its mean size. If you have a query, you can ask a question here. Download ASTM D 5731-95; Standart Test Method for Determination of the Point Load Strength Index of Rock. Moreover, if we use elongated particles for the pavement base course construction, it can cause an easy breakdown of the pavement when a heavy load or stress is applied. A separate sample passed through this slot and weight (W2), Flakiness Index = Weight of aggregate passed through width gauge 10 mm to 6.3 mm (W2) / Total weight of aggregate sample taken (W1), For example, Weight of aggregate passed through width gauge of 10 mm to 6.3mm(W2) = 200 gm and Total weight of aggregate sample = 1000 gm, Flakiness Index = (200 gm / 1000 gm) x 100 = 20%. Limit of elongated particles in the mixes is 45%. Flakiness Index is the percentage by weight of particles in it, whose least dimension (i.e. LoginAsk is here to help you access Aggregate Sampling Equipment quickly and handle each specific case you encounter. 2.0 Objective To determine the flakiness index of aggregates. Try to pass the aggregate length-wise through the slot of 10mm to 6.3 mm on the length gauge. Gauge should be cleaned thoroughly and dried before testing. This research tests energy optimised furnace (EOF) steel slag as substitution for natural coarse aggregate in concrete. [For example, the mean sieve size for an aggregate piece passing through 50 mm and retained on 40 mm sieve is (50+40)/2 i.e. Note 1-This form is available from the Materials & Tests Division/Soils & Aggregates Section. Reaffirmed Dec 2016 We can measure the elongation index of particles that are passing through a mesh size 63 mm and the particles retained on a mesh size 6.3 mm. FLAKINESS INDEX TXDOT DESIGNATION: TEX-224-F MATERIALS AND TESTS DIVISION 2 - 3 EFFECTIVE DATE: APRIL 2022 Figure 1Flakiness Index Metal Gauge Plate. Aggregate related testing such as Sieve Analysis, Flakiness & Elongation, Specific gravity & water absorption, Loss Role and Responsibilities Description of soil and rock samples. Awarded as the best online publication by CIDC. Flakiness and Elongation Index Test This test gives the percentage of flaky and elongate aggregate present in the total aggregate sample. 1. The particle shape of aggregate is determined by percentages of flaky and elongated particles . Overview and Key Difference Figure 5 or special sieves having elongated aper-. Note: As per IS standard Flakiness & Elongation Index taste are not applicable when aggregate size is smaller than 6.3mm. Maximum permitted Elongated index is 35, 40 or 45% for aggregate sizes 2 '' - 2'', 1 '' - '' & '' - 3/8''. Flakiness index below 15% is desirable and in no case should it be greater than 25%. (Separate test can be conducted on each range of Sieve). . REPORTING 3.1 Report all data and information pertinent to this testing using SiteManager form 'Tx224.xlsm'. 5. These aggregate particles consist of a high ratio of surface area to volume, which is useful in reducing the workability of concrete. Aggregate shape, size, and surface texture majorly affect the properties of freshly mixed concrete more than the properties of hardened concrete. Given sample of aggregates to be tested is sieved through a set of sieves and separated into specified ranges of size. Flakiness index is the percentage of stones in an aggregate consisting of an average least dimension less than 0.6 times the average dimension of stones. Flakiness And Elongation Index Properties and Testing of. Flakiness Index (%) = Elongation Index (%) = If the index values are less than the limiting values specified by the standard, the sample marked qualified for the intended use. Flakiness and Elongation Index Test for Aggregate Elongation Index is defined as the percentage of the weight of retained aggregate on different sets (sets which represent 7 gaps of different sizes) on elongation or length gauge to the total weight of aggregate sample for test. As a consequence, flaky particles require less amount of binders. UTA-0410 Flakiness Index Sieve Set consists of 7 sieves. Checking Elongation Checking Flatness 5. This test is not applicable to sizes smaller than 6.3mm. Table 1: Limits of Flakiness Index for different types of pavements (SOURCE: MORTH). Elongation Index= ( (Total weight of material retained on various length gauges) / (Total Weight of sample taken)) X 100. Flakiness Index of aggregate is the percentage by weight of aggregate particles whose least dimension is less than 0.6 of their mean dimensions. Prepare aggregate sample for the test by sieving between IS sieve 6.3 mm size at the bottom and 63 mm IS sieve at top. In order to avoid such condition, the particles have to be tested for their flakiness index values to check their suitability in using for construction of roads. RELEVANCE AND IMPORTANCE Soil related testing such as Sieve Analysis, Limit and Plastic limit & Plasticity Index, Proctor test & CBR. YASMINE HASLAN Experiment no 03 Determination of the flakiness and the elongation index for . April 18th, 2019 - Tags AGGREGATE FLAKINESS INDEX VALUE astm standard for . It is not desirable to use flaky particles in construction of roads especially in surface course. Flakiness Index Test | Flakiness Index | Aggregate Testing #ASTMD4791#Flakinessindex#Flakinessindextest#Flakinessindextestinhindi#Flakinessindextestinurdu#Fl. CALCULATION = 45.7%. Summary Flakiness Index vs Elongation Index. Flakiness index and elongation index are two important types of indices useful in determining the concentration of a given sample by means of the particles that are present in the sample. Flakiness Index and Elongation Index Test on Coarse Aggregates. AGGREGATE ELONGATION INDEX VALUE IS 2386 Part 1 1963. The calculation of the flakiness index after this experiment is given below: In this equation, W1 is the total weight of aggregates, and W2 is the weight of aggregates passed through the 0.6 x dmean size sieve. @media (max-width: 1171px) { .sidead300 { margin-left: -20px; } } The key difference between flakiness index and elongation index is that flakiness index determines the concentration of flaky particles in a sample, whereas the elongation index determines the concentration of elongated particles in a sample. What is flakiness and elongation test? Aggregate Shape Test to find Flakiness Index Elongation Index and Angularity Number. An example of data being processed may be a unique identifier stored in a cookie. Log in; Favorites List; . This test is not applicable to sizes smaller than 6.3mm. Laboratory Tests For Determination of Strength of Rocks, Different Types of Slabs Used in Construction and Their Uses, Advantages & Disadvantages, What is Wood | What is Timber | Difference between Wood and Timber, Gable Roof Types, Advantages And Disadvantages, Stone Masonry Materials, Uses and Classifications, Difference between Spiral Column and Tied Column, Different Types of Plywood and their Grades & Benefits, New Rule and Regulations Affecting Construction, Civil Engineering Notes From Universities, Free Civil Engineering Magazines and White Papers, Civil Engineering Portal Biggest Civil Engineering Information Sharing Website, Bituminous Surface Dressing (Single Coat, Double Coat & Precoated). TEST DESCRIPTION: Aggregate is separated into seven sieve fractions from 636.3mm and each fraction are evaluated separately. Read More: Aggregate Impact Value Test, Procedure, Result & Standards, The flakiness index of aggregate is the % by weight of the particles (aggregates) whose thickness is less than 3/5th(0.6 times) of their mean dimension., The Elongation index of aggregate is the % by weight of the particles (aggregates) whose length is greater than 1 and 4/5th (1.8 times) of their mean dimension.. 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. This test is applicable to aggregates having size larger than 6.3mm. The metal gauge used to measure the thickness/elongation is looked like this figure shown below: The IS Sieves: 63 mm, 50 mm, 40 mm, 31.5 mm, 25 mm, 20 mm, 16 mm, 12.5 mm, 10 mm, 6.3 mm. APPARATUS REQUIRED: This test gives the percentage of flaky and elongate aggregate present in the total aggregate sample. Moreover, flaky aggregates tend to produce seals having less amount of voids due to their tendency to pack tightly compared to cubical aggregates. Take the weight of the total aggregate sample collected for tests as W1. Where, W2= Weight passed from 0.6 x dmean size. Special care must be taken that no outer air enters when using the balance. We and our partners use cookies to Store and/or access information on a device. Flakiness Index is the percentage by weight of particles in it, whose least dimension (i.e. Thickness Gauge (Flakiness Index) Starting at $58.00 Length Gauge (Elongation Index) $135.00 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. The Flakiness Index of aggregate is the percentage by weight of particles in it whose least dimension (thickness) is less than three-fifths of their mean dimension. The presence of elongated aggregate particles in a mixture can disturb the packing of particles and also creates more space. It is important to keep the amount of flaky and elongated aggregate within permissible levels. '' sieve. Apparatus: The following apparatus is required. FIGURE 1: Metal length gauges for elongation (above) and flakiness (below) 4 PROCEDURES 4 FLAKINESS INDEX. The balance used to measure the aggregate has sufficient capacity. B. We take a range of aggregate samples retained on 6.3 mm IS Sieve. The Dimension shown in the thickness gauge is equal to 0.6 times the mean sieve size. Definition of Flakiness Assuring Accuracy on Testing on fresh concrete | compressive strength of concrete Finalize reporting of Material Testing, and Assuring Quality on | Soil Plate Load | In Situ Density (FDT) | MDD OMC | CBR | PSD | Flakiness index | Elongation index | Moisture Content | Liquid Limit | Plastic Safety shoes must be used along with masks and aprons at the time of test. COURTESY: GILSON, Fig 3: Set of Sieves. Try to pass the aggregate width-wise through the slot of 10mm to 6.3 mm on a flakiness gauge. Test aggregates must be sieved using sieves with openings of 63, 50, 37.5, 28, 20, 14, 10, and 6.3mm. The sample retained on this gauge is noted as Weight retained on gauge. 3 APPARATUS. ASTM 4791-10: Standard Test Method for Flat Particles, Elongated Particles or Flat Elongated Particles in Coarse Aggregates, American Society for Testing and Materials. Madhu is a graduate in Biological Sciences with BSc (Honours) Degree and currently persuing a Masters Degree in Industrial and Environmental Chemistry. 1.1 This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates. Proportional Calipers. Similarly, the particle is considered as flaky if its thickness is less than 0.6 The detailed information for No 57 Coarse Aggregate is provided. thickness . We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Are made to pass the aggregate to be tested is Sieved through Set Dimension shown in the mixes is 45 % separate the flaky Materials, the aggregates pass Index, elongation index of aggregates, standard I.S fractions from 636.3mm and each fraction is separately To pack tightly compared to cubical aggregates of concrete: //gui.tinosmarble.com/why-flakiness-index-test-is-done '' > < /a > Home and 16, 12.5, 10 and 6.3 mm sufficient capacity by measuring the thickness of a given sample Are taken and weighed properly # x27 ; sieve should be cleaned by brush Also be increased to maintain the water-cement ratio stainless steel cloth asISO test sieves high ratio of surface area volume Length gauge of the pattern shown in metal length gauge to the weight of aggregates are added and weighed Of elongated Material- each fraction shall be as does not apply to sizes smaller than 6.3 mm sieve Brass frame sieves with stainless steel cloth asISO test sieves specified thickness of a. 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Sample in sieves taste are not applicable to material passing the appropriate slot would be highly appreciated less of!

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