2. Scope of Elongation Index of Aggregate This procedure covers all relative activity for the project site. A hammer weighing 13.5 to 14kg is dropped on the specimen from a height of 38cm 15 times. This test is also applicable to aggregates having size larger than 6.3 mm. 3. Elongation Index. 4. Click Here to go to Flakiness Test Elongation index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is greater than one and four-fifth times their mean . Los Angel's apparatus consists of a hollow drum with a diameter of 70cm and length of 50cm. It is recommended that the desiredprocedure be reviewed carefully prior to conducting the test. Procedure of Shape Tests on Coarse Aggregates Sieve the sample through the IS sieves (as specified in the table). Let us know in the comments below. This test is not applicable for the aggregate size of less than 6.3 mm. According to Indian Standard, the maximum percentage of solids in aggregate is 67%. Description The Flakiness And Elongation Index Test Gauges is used to estimate the applicability of coarse aggregate used in the cement and concrete mixture, it can determine the percentage of the aggregate that over than 4.75mm size ( needle or flake). Experiment no 03 Determination of the flakiness and the elongation index for Transportation Engineering Laboratory Manual. Length Gauge (Elongation Index) $135.00. Its important you know your gauge length to carry out critical and accurate elongation calculations. Mohammed Y. Mousa Materials Lab Procedures: 1- Secure a representative sample of aggregate. AGGREGATE ELONGATION INDEX VALUE IS 2386 Part 1 1963. The test is not applicable to material passing 6.30 mm sieve or retained on 50 mm sieve. Use tab to navigate through the menu items. We've updated our privacy policy. IEC 62368-1 Clause Y.4.3 Tensile Strength And Elongation Test Apparatus And Elongation Test Apparatus Product information: This Tensile Strength and Elongation Test Apparatus is designed and manufactured according to the standard requirement of IEC 62368-1:2018 Annex C, Annex G.5, clause Y.4.3, etc. Product Details : Quality Standard: As Per IS 2386 (P-I) Specification: Aggregates which are flaky and/or elongated will often lower the workability of a concrete mix and may also affect long term durability. Our reliable testing equipment will make sure you enjoy consistent, repeatable results to meet or exceed all of the main testing standards, including: Industrial Physics companies have been in the testing game for a long time, and weve learnt a great deal about elongation testing over the years now were happy to be able to pass that knowledge on to you. The specimen is taken and sieved in a 2.36mm sieve. The 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) their mean dimension. The abrasion value shall not exceed 30% for the wearing course and 45-50% for the base course. 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 apparatus consists of the length gauge, sieves of the sizes specified in Table 15.1 and . This cookie is set by GDPR Cookie Consent plugin. Los Angels abrasion test is usually performed. A separate sample retains on this slot and weighted it (W2). Test sieve size 63mm, 50mm, 37.5mm, 28mm, 20mm, 14mm, 10mm, 6.3mm 3. Procedure For Elongation Index Test of Aggregate:- Sieve the aggregate sample with sieves specified in the given Table 2. HIGHWAY LAB REPORT a) Flakiness of Coarse Aggregates The flakiness index of the aggregate is the percentage by the weight of the particles whose least size or the thickness is less than 3/5th of their mean dimension. The increase in a sample's gauge length measured after a rupture or break divided by the sample's original gauge length is referred to as elongation. The drum is rotated at 30-33 rpm for a total revolution of 500-1000. To determine the Elongated shape of particles of Coarse Aggregate/test on coarse aggregate greater than 6.3 mm in size. The aggregate retained on 63mm and passed through 6.3mm should not be considered. Compressive strength and Flexural of Hardened Concrete | Jameel Academy, Sieve analysis of fine aggregates student experiment, Astm designation c 136 for coarse aggregates, Compressive Strength of Hydraulic Cement Mortar | Jameel Academy, Determination of Optimum Bitumen Content of Fibre Reinforced Bituminous Concrete. The index features six stainless steel pins set in a brushed aluminum base. Fig. Have a look at this short video guide to UTM machines from United Testing for an idea of how elongations testing could easily be added to your test and inspect solution. The result is typically normally expressed as a percentage, also known as percent elongation (% elongation). Many standards require you to measure elongation and no matter which industry youre working in, we can help you get the accurate measurements you need. Elongation index or Elongated aggregate is the particle whose largest dimension is more than 1.8 or 9/5 times of their mean dimension. In other words, % by weight of particles smaller than 0.6 times the mean size. TITLE DETERMINATION OF ELONGATION INDEXVALUE 2. For a good quality aggregate, the crushing value should be as low as possible. APIdays Paris 2019 - Innovation @ scale, APIs as Digital Factories' New Machi Mammalian Brain Chemistry Explains Everything. SUBMISSION DATE DECEMBER 19, 2017. PUAN SALMA BINTI YAHYA The gauge length used shall be that specified the below table. This test is done to find the toughness characteristics of aggregates. 4. { Elongation Index }=\frac{\text { Total weight retained on gauge }}{\text { Total weight on sieves }} * 100; Desirable values. Elongation is the measure of the ductility of a material that is determined by a tension test. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Elongation testing is a way to measure the ductility of a specimen through the application of tension. For a good quality aggregate, the impact value should be as low as possible. To determine the elongation index of given aggregates sample. All rights reserved. Elongation Index: As per IS 2386 (Part 2):1963, cl. Aggregate Testing Equipment Gilson Co. Take the aggregate sample which contains minimum 200 pieces of any fraction. Have u ever tried external professional writing services like www.HelpWriting.net ? EN. Flakiness And Elongation Index Index Test. Elongation Index is the percentage by weight of particles in it, whose largest dimension (i.e. Page | 4 APPARATUS 1. This test is not applicable to a size less than 6.3 mm. Properties like strength, toughness, etc. AI and Machine Learning Demystified by Carol Smith at Midwest UX 2017, Pew Research Center's Internet & American Life Project, Harry Surden - Artificial Intelligence and Law Overview, No public clipboards found for this slide. ContentsStandard FollowedObjectiveRelated TheoryRounded Aggregates:Angular Aggregates:Flaky Particles:Elongated Particles:Significance of determination of flakiness . 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. The aggregates crushing value test should be performed as per IS code 2386 Part IV. In the case of gravel it is determined by its angularity number. Elongation index (%) = Nos. Observation Table 1. We've encountered a problem, please try again. The flakiness index of an aggregate is the percentage by weight of particles in it whose least dimension is less than 0.60 times their mean dimension. Soil mechanics(geotechnical engg) lab report, Site Investigation and Example of Soil Sampling, Aggregate - coarse aggregates, testing & limits, ppt gursharan singh m.tech civil engineering, PLAIN AND REINFORCED CONRETE (LAB MANUAL), Buildingmaterialslabmanuallab01 161125043012, HIGHWAY CONSTRUCTION MATERIAL & PRACTICE, Construction of High Speed Highway and Test track, A presentation(12 btceng040) ON SUMMER INTERNSHIP from MNNIT, Buildingmaterialslabmanuallab01 161125043012 (1). The Elongation index on an aggregate is the percentage by weight of particles whose greatest dimension (length) is greater than 1.8 times their mean dimension. (A,B) Ion flux kinetics in root elongation zone (A) and mature zone (B) in response to H 2 O 2; (C,D) Ion flux kinetics in root elongation zone (C) and mature zone (D) in response to OH.Two distinctive flux points were identified in kinetics of responses . Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. The test is not applicable to material retained on a 63.0 mm BS test sieve. The specimen is filled in a cylindrical mold in three layers with each layer being subjected to 25 blows. Elongation test and Flakiness tests are known as Shape Tests and are performed on aggregate. seperating the elongation particles and expressing their mass as a percentage of the mass of sample tested.From the experimen, the mean elongation index is 26.0 (sieve 28mm) and elongation index is 22.4%.So we get 1.16 < 1.8.We can classify the sample as not an elongation sample. The aggregate to be classified is separated into six sieve fractions from 6.3 to 50 mm and each fraction is examined separately. passing Total Nos. First, fill the sample aggregate with one-third of the cylindrical measure in three layers. 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 greater than nine-fifths (1.8times) their mean dimension. 2022 Industrial Physics. PRESENTATION MINI PROJECT STATISTIC SEMESTER 3 POLITEKNIK, MINI PROJECT STATISTIC SEMESTER 3 POLITEKNIK, Soalan peperiksaan akhir politeknik dbm1013 dis 2015, Cause of accident and prevention in construction industry, past year politeknik Pengajian malaysia jun 2016, Irresistible content for immovable prospects, How To Build Amazing Products Through Customer Feedback. The flakiness index is the ratio of the weight of particles/aggregates smaller than 0.6 times the mean size to the weight of the total sample of aggregate. In bituminous mixtures, flaky aggregates make for a harsh mix and may also crack and break up . Particle is elongated when its length (longest dimension) is more than 1.8 of the midsize of the sieve fraction. 03DKA16F2023 Equipment The Apparatus consists of the length gauge, sieves of the sizes specified in Table (a) and a balance Procedure NAME OF THE EXPERIMENT: ELONGATION INDEX TEST AIM OF THE EXPERIMENT: To determine the Elongation Index of the given sample of coarse aggregate. If the void percentage is greater than 33% then it means that the aggregate is angular. As such aggregate testing could be classified into two broad categories as mentioned below. Flakiness index below 15% is desirable and in no case should it be greater than 25%. It is immersed in a solution of sodium sulfate or magnesium sulfate for 16 to 18 hours, After immersion, the sample is taken out from the solution and it is dried at a temperature of 105 to 110C, The dried aggregate is immersed once again in the magnesium sulfate or sodium sulfate solution and the process is repeated 10 times, After 10 cycles the weight of the specimen of aggregate is obtained (W2). The entire setup is placed in a compression testing machine and is subjected to a load rating of 4 tons/min until it reaches a load of 40ton. The elongation index is found by separating the elongation particles and expressing their mess as a percentage of the mass of sample tested. Clipping is a handy way to collect important slides you want to go back to later. As the latter is applied, an increase in length and a uniform reduction in cross-sectional area take place, while the material maintains a constant volume. Elongation due to expansion can also occur when a material undergoes . Length Gauge (Elongation Index BS), is used for determining the elongation index of aggregates. Therefore, testing of aggregates becomes important. 03DKA16F1130 The elongation index of an aggregate is the percentage by weight of particles in . The greater the elongation, the higher the ductility or elasticity of the material. . The different materials used such as tar, asphalt or whatever binding material adopted is to be observed for this test specifications. This test is done to find the strength of aggregates. Tap here to review the details. GROUP MEMBERS 1. For performing this test in the lab minimum of 200 pics of aggregate is required to the size of 20 to 6.3mm aggregate of performing 20mm aggregate test. CIK FAIZAH BINTI HJ. The other component of eEF1 is the eEF1Balpha, a guanine nucleotide exchange factor . W2 - the weight of aggregate passing through a slot having size 0.6 times the mean size of the aggregate, W1 - Total weight of the aggregate specimen. Flakiness Index Test The elongation and flakiness test involves sieving the aggregates through a sieve with long parallel openings (as shown in the diagram below) which measures the amount of aggregates which are elongated which determines the flakiness index. The EF1Alpha (eEF1A), a component of EF1 is GTP- dependent and its function is to accurately attach aminoacyl-tRNA to the ribosome. PRACTICAL DATE DECEMBER 12, 2017 The elongation index is found by separating the elongation particles and expressing their mess as a percentage of the mass of sample tested. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. The specimen is filled in a cylindrical mold of diameter 15.2cm in three layers with each layer being subjected to 25 blows. The elongation index is not applicable to sizes smaller than 6.3 mm. The Flakiness Index of aggregates is the percentage by weight of particles whose least dimension (thickness) is less than 0.6 times their mean dimension. Elongation index is more than 15% then the aggregate is undesirable for any construction work. Metal thickness gauge 2. Blockchain + AI + Crypto Economics Are We Creating a Code Tsunami? A Dictionary of Earth Sciences. Activate your 30 day free trialto unlock unlimited reading. 2- The . Flakiness & Elongation Index Test Gauges Get Latest Price Quality Standard : As Per IS 2386 (P-I) Aggregates which are flaky and/or elongated will often lower the workability of a concrete mix and may also affect long term durability. experimental investigations basically the materials that are used in this study include aggregate components such as stone Elongation represents the greatest dimension of aggregate which shall not exceed 1.8 times the mean size of the aggregate. 4. TEST DESCRIPTION: Flakiness Index of aggregate is the percentage by weight of aggregate particles whose least dimension is less than 0.6 of their mean dimensions. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. The test procedure involves the following steps. 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 . Apparatus: 1- A balance of accuracy of 0.1% of the sample weight. P 1 of 13 PUBLIC WORKS LABORATORIES TEST DIRECTORY. KARYA MITRA GROUP HEAD OFFICE. 10 bitumen quality tests for road constr and why they are used, Fly-ash or Pozzolanic Material Test - Loss on Ignition, Need copy of Bituminous Mix design and Various Test formats of Bituminous materials, Various tests on aggregates stones to find the properties. You currently have no products in your enquiry cart, please continue browsing and select more products. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. The Elongation Index on an aggregate is = Total weight retained on Elongation Gauge x 100 / Total weight of test sample =_____(%) 7. Elongation Testing. The test procedure involves the following steps. Stores the current language. 19.7x80 - 26.3x90 - 33.9x100 mm slot dimensions. Test procedure : Elongation Index Gauge Test Procedure Determination of Flakiness Index 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 Elongation Index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is greater than 1.8 times their mean dimension. It does not store any personal data. The elongation index is found by separating the elongation particles and expressing their mess as a percentage of the mass of sample tested. Our highly accurate testing devices offer insightful information on how far a sample will stretch before breakage, including our efficient and accurate UTM machines. This test is done to check the durability characteristics of the aggregate. The specimen is taken and sieved in a 2.36mm sieve. Flakiness (Thickness) Gauge. AHMAD TAZRI BIN AZIZ Descriptions (see inserts in each panel) of cereal root ion fluxes in response to H 2 O 2 and hydroxyl radicals ( OH) in a single experiment. The Elongation Index of aggregates is the percentage by weight of particles whose greatest dimension (length) is greater than 1.8 times their mean dimension. . After the particles have been classified into the two groups, determine the The test is not applicable to material passing 6 mm sieve or retained on 50 mm sieve. PREPARE BY GROUP GROUP A test is done to find the thickness of the aggregate i.e., least lateral dimension. ELongation index = (W2/W1) * 100. Visit our product area to browse through our vast range of testing solutions! MOHAMAD AMIR SAIF BIN ABDUL HAMID JavaScript is disabled. 2 OBJECTIVE. Elongation Index . Aggregate is used in layers of the flexible pavement. Additionally, it has six labeled openings between pairs of pins which determine the length of particles form each of the sieve fractions tested under 50mm. Popular Elongation Tester Products Pull Tester Elongation Tester 4.90 Lakh / Piece Apple Electroniks Contact Supplier Elongation Index Gauge 325 / Piece Standard Scientific Instruments Co Contact Supplier Tenacity and Elongation Tester 1.45 Lakh / Set Texcare Instruments Contact Supplier Elongation gauge 300 / each Rupson Industries Analytical cookies are used to understand how visitors interact with the website. The Flakiness Index on an aggregate is = Total weight passing Flakiness Gauge x 100 / Total weight of test sample =_____(%) 2. The combined value of flakiness and elongation index shall not exceed 30%. A specimen of aggregate (5 - 10kgs) is taken and weighed (W1). Each piece of these are tried to be passed through specified length of the gauge length with its ZAINAL ABIDIN The elongation index is defined as the % of the weight of aggregate having size more than 1.8 times the mean size. Aggregates for Concrete cedd gov hk. As the pulling progresses, the specimen bar elongates at a uniform rate that is proportionate to the rate at which the load or pulling force increases. Each fraction is gauged in turn for thickness on the metal gauge. OBJECTIVE : The objective of the test is the determination of the elongation of the elongation index of aggregates. Soil mechanics project by engineer ekhisham ul haq.. lab report structure deflection of cantilever, PAST YEAR DCC5183; project management and practices DISEMBER2015. elongation index (I E) The percentage by weight of particles whose long dimension is greater than 1.8 times the mean dimension measured with a standard gauge. MOHD IQBAL NAQIUDDIN BIN ZULKIPLI Sieve the sample through mentioned sieves i.e., from 63mm to 6.3mm sieves. IRC recommends a crushing strength of 30% for the wearing course and 45% for the base course. After attaining the max load, the load is released and is allowed to settle down. Elongation testing takes a sample and subjects it to enough pressure to bend it until it breaks. 5.0. The cylinder is placed in a horizontal position. are available to determine the shape of aggregates. The specimen is taken and sieved in a 1.7mm sieve and passing material weight is obtained (W2). It is a very useful way of working out the plasticity of a material and can help you understand the ways it might behave when subjected to pressure. LECTURERS NAME 1. Page | 4 APPARATUS 1. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . What is the purpose of doing shape test of aggregate? . (Abrasion charges are spheres made of cast iron having a diameter of 48mm each and a weight of 390-450gm each). Pavement material testing comprises all the methods used to test the pavement materials for their specification. The cookie is used to store the user consent for the cookies in the category "Advertisement". The cookie is used to store the user consent for the cookies in the category "Analytics". Apparatus Required MUHAMMAD AIZAT BIN ABD RASHID This consists of two measurement points: the first is the starting distance between the upper and lower grip edges; the second is the distance travelled by the grips when the sample breaks. I did and I am more than satisfied. The significance of flakiness & elongation index is as follows; The degree of packing of the particles of one size depends upon their shape. to study the properties of stability, flow by varying the percentages of elongated aggregates using marshall stability test to study the bulk density and volumetric properties (vtm, vfb, vma) 0f marshall specimen's. iii. Elongation Thickness gauge Procedure :- 1. Elongation is calculated by dividing the distance travelled by the original gauge length. The Following is the procedure for elongation index, Separation of Elongation Material Elongation Test Try to pass the aggregate length -wise through the slot of 10mm to 6.3 mm on the length gauge.
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