This test is not applicable to sizes smaller than 6.3mm. Related Search Used Aggregate Equipment Aggregate Testing Lab . '' sieve. This document was uploaded by user and they confirmed that they have the permission to share 1/4 sieve. In this paper, the geometric characteristics of concrete materials obtained from different locations: Aleto Eleme, in Rivers State, Ishiagu in Enugu State and Akamkpa in Cross River State is reported. An aggregate is said to be flaky if its least lateral dimension is less than 0.6 times the mean dimension. YASMINE HASLAN I cycle SHAMJITH KM Test Method for Material Finer than 75-m (No. The significance of flackiness & elongation index is as follows : The degree of packing of the particle of one size depen upon their shape Due to high surface area to volume ration, the flaky and elongated particle lower the workability of concrete mixes. The aperture sizes and the number of sieves are selected in accordance with the nature of the sample and the accuracy required. gauges or sieves, expressed as a percentage of the total weight of the sample gauged. A high flakiness index test result indicates a high proportion of elongated aggregates, a low test result indicates a low proportion of elongated aggregates. Large scale road constructions are taking place over the length and breadth of India due to adoption of various intensified activities in road construction in India like PMGSY, etc. Length Gauge have length equal to 1.8 times the mean dimension of the aggregate. Enter the email address you signed up with and we'll email you a reset link. Table 06: Flakiness index results Statistics Flakiness Index Range 11-35 Mode 22 Specified maximum Limit 40 g. Elongation Index Standard Test Method used: BS 812:1989:Section 105.2, BS 882:1992(Ref.3). Balance should be able to weigh upto 1 g. Sieves required are 63, 50, 40, 31.5, 25, 20, 16, 12.5, 10 and 6.3 mm (Based on requirement Furthermore, you can find the "Troubleshooting Login Issues" section which can answer your unresolved problems and equip you with a lot of relevant information. This test is not applicable to a size less than 6.3 mm. Sorry, preview is currently unavailable. sbm determination of aggregate crushing value lab reportAggregate impact and crushing test LinkedIn SlideShare Feb 08,2012 Flaky and elongated particles are considered undesirable for base coarse construction Objective(s) of the Experiment. Review the detail engineering, Testing at laboratory, Material Quotation, Testing Report etc. 45 mm. Specifications: Additional Information Item Code AT-215-216 Interested in this product? 2) Length/Elongation Index Gauge. dimensions specified in co1. to produce workable concrete than smooth, rounded compact aggregate. These are the materials of which the thickness is small as compared to the other two dimensions. Further Investigation on Damage Model of Eco-Friendly Basalt Fiber Modified Asphalt Mixture under Freeze-Thaw Cycles The cement concrete materials whose geometric characteristics were tested were fine and coarse aggregates. The test flakiness index of aggregate is used to determine the particle shape of the aggregate specimen and each particle shape being preferred under specific condition. Modified proctor test, grain size analysis, attarberg limits (liquid limit and plastic limit) CBR Tests & free swell index test. Aggregate related testing such as Sieve Analysis, Flakiness & Elongation, Specific gravity & water absorption, Loss Role and Responsibilities on a metal length gauge of the pattern shown in Fig. For that aggregates are collected from extensive areas. Hence we offer thickness gauge and length gauge to check flakiness and elongation index of the aggregate respectively. Flaky particles are those whose least dimension is 0.6 times lesser than the mean size. Both Flakiness and Elongation tests are not applicable to sizes smaller then 6.3mm i.e. Weighing balance 4. The apparatus shall be consisting of following:-Weight Balance (Digital balance):-Used for weighing the aggregate sample and It shall have an accuracy of 0.1 percent of the weight of the test sample.Elongation or Length gauge:-Used for passing different sizes of aggregate between different size ranges gaps on . Aggregate = 0.2064 1 = 20.64 % X 100 X 100 Average Flakiness Index (%) = Summation of all fractions No. Particle shape and surface texture influence the properties of freshly mixed concrete more than the Open navigation menu. Report DMCA, Flakiness and Elongation Test (BS 812: Part 3) 1.0 Introduction The type of rocks and the type of crushing machine highly determine the shape and size of the aggregates produced. The flakiness index is used to describe the average particle shape of aggregates including those used for concrete. REPORT Report the result obtained to the nearest second decimal. The maximum elongated index allowed is 35%, 40% or 45% for aggregate size 21/2 - 2, 11/2 - 3/4 and 1/2 - 3/8. It was also found that aggregate blends well with well-shaped, spherical, cubical, rounded and smooth particles that require less cement and water for a given slump than it blended with flat, elongated, angular and rough particles. Checking the field density of embankment, sub-grade, GSB and WMM layers by sand Replacement method. SAMPLING Before conducting any test on aggregates, the first thing to do is sampling. Two types of plastic were taken thermoplastics and thermoset having their relationship with the heat i.e. The elongation index test procedure contains following steps. After, sieve analysis, physical properties include flakiness and elongation index, abrasion value, aggregate impact value and water absorption were carried out on, RCA, VA, and bitumen free RAP aggregates and compared with Ministry of Road Transport and Highways (MoRTH, 2013) [17] and tabulated in Table 1. Elongation Index is the percentage by weight of particles in it, whose largest dimension (i.e. Such aggregates may have larger variations in their engineering properties due to variety of reasons. Jul 01, 21 (Updated at: Jul 04, 21) Report Your Issue. Initiated to basic tests such as: Flakiness Index, Elongation Index, Sieve analysis, California Bearing Ratio, Liquid and Plastic limit, Use of admixtures. FLAKINES S INDEX ELONGATIO N INDEX (%) 0 0 (kg) 1 1 (kg) 0.2064 0.0956 (kg) 0 0 (%) 20.64 9.56 Calculation Flakiness index (%) = Nos. Supervise and verify Slump Test, Temperature checking of fresh concrete. If the flaky particles are greater than 30% then the aggregate is considered undesirable for the intended use. Apparatus Required. Maximum permitted elongated index is 35%, 40% or 45% for aggregate size 21/2" - 2", 11/2" - " and 1/2" - ". Schedule for laboratory testing of soil and rocks according to the requirements Soil related testing such as Sieve Analysis, Limit and Plastic limit & Plasticity Index, Proctor test & CBR. $4%&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz ? Limit of flaky particles in the mixes is 30%. Separation of Elongated Material- Each fraction shall be gauged individually for length on a metal length gauge of the pattern shown in Figure 4. P( ( ( ( ( ( ( ( uMnDyy~wu~"c`m|m ] k^Q Q. Firstly, 10-20 mm and 5-10 mm of aggregates were mixed in various proportions to find the combination with minimum voids content by Loose Bulk Density Test. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. all-in aggregate-aggregate consisting of a mixture of fine and coarse aggregates. Flakiness and Elongation Flakiness Index Sieve Set UTA-0410 When an aggregate particle has a thickness less than 0.6m of its mean sieve size, it is considered flaky. Reaffirmed Dec 2016 ASTM 4791-10: Standard Test Method for Flat Particles, Elongated Particles or Flat Elongated Particles in Coarse Aggregates,. 4.2 Report the Flakiness Index to the nearest whole number. 2.0 Objective To determine the flakiness index of aggregates. 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. 24.0 APPARATUS/INSTRUMENTS 1. Aggregates which are flaky and/or elongated will often lower the workability of a concrete mix and may . %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz Definitions (EN 12320) aggregate-granular material used in construction. As such the flakiness and elongation test must be carried out to determine the suitability of the material. manufactured aggregate-aggregate of mineral origin resulting from an industrial process involving thermal or other modification. Flakiness index test lab report pdf Flakiness and Elongation Index Test are very important tests to be performed on aggregate in the laboratory. Hence we offer thickness gauge and length gauge to check flakiness and elongation index of the aggregate respectively. 2 0 obj 0.1 percent of the weight of the test sample. There are some apparatus which is used for Elongation Index Test. A flaky particle is the one whose least dimension (thickness) is than 0.6 times the mean size. a) BS - 1241 specifies a Flakiness Index not exceeding 30% irrespective of the size of the aggregates. Using various softwares (such as NLREG-Nonlinear Regression and Curve Fitting; MRA&F; XLSTAT), a general relationship between the soundness property and other various characteristics of aggregates (from J&K) has been developed. change of state. Collect pieces by only random sampling. - Responsible for tests such as Plastic Limit & Liquid Limit test, Sieve Analysis, Proctor Compaction test, 10% Fine Test (TFV), California Bearing Ratio (CBR), Aggregate Crushing Value Test (ACV), Soundness of Aggregate test, Specific Gravity & Water Absorption of Aggregate test, Flakiness Index & Elongation Index, Bitumen Extraction Test, Marshall Stability test, Coring Test, Cube . natural aggregate-aggregate from mineral sources which has been subjected to nothing more than mechanical processing. Test Method for Soundness of Aggregates by Use of Sodium Sulphate or Magnesium Sulphate 12. conclusion based on the objective for this experiment is to identify the flakiness and elongation index of the given aggregrate samples, we indentified the flakiness and elongation is not influenced each other.we get the value for the flakiness index is 26.3% and for the elongation index is 22.4%.not so much different between both of the two Plasmid Dna Isolation Lab Report Design Gate And Grill Pentecost Storyboard For Children It was found among other findings that aggregate characteristics such as; shape, texture and grading contribute significantly to the performance of fresh portland cement concrete. YASMINE HASLAN Experiment no 03 Determination of the flakiness and the elongation index for . There are two methods of reducing the size of an aggregate sample: Splitting and quartering. Thus road construction became an inseparable part of many civilizations and empires. Reaffirmed- Dec 2016, Table 3 : Recordings for Elongation Index. thickness) is less than three-fifths of its mean dimension. The maximum sizes of coarse aggregate were 10mm and 20mm. <> Soundness test takes at least 10 days for completion. 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. To determine the flakiness and elongation indices of the given aggregate sample. Aggregate related testing such as Sieve Analysis, Flakiness & Elongation, Specific gravity & water absorption, Loss Role and Responsibilities Take the aggregate sample which contains minimum 200 pieces of any fraction. fines-particle size fraction of an aggregate which passes the 0,063 mm sieve. In such cases if the estimation of the soundness value could be developed on the basis of some tests which are quick to perform, less time consuming and cheap, then the process will help the constructors enormously. Aggregates: - Los angles Abrasion, Impact, Flakiness and Elongation Indexes and Specific Gravity, Soundness etc. These two types of plastic were seen to be satisfactory in improving the properties of flexible pavements. length) is greater than one and four-fifths times its mean dimension. 2.0 Objective To determine the flakiness index of aggregates. In this view an attempt has been made to develop a correlation between the various physical characteristics of aggregates from different sources across Kashmir valley and adjoining areas in J&K, so as to develop a mathematical model depicting relationship between other physical characteristics & soundness property of aggregates. Note 1-This form is available from the Materials & Tests Division/Soils & Aggregates Section. General . Close suggestions Search Search elongated slots. International Educational Applied Scientific Research Journal. The Flakiness Index is the total weight of the material passing the various thickness This test is not applicable to sizes smaller than 6.3mm. Calculation 1. b) Maximum permitted value of Elongation Index is 35%. Determination of Flakiness Index Determination of Elongation Index Results Test Precautions Discussion Standard Followed ASTM D 4791 Objective This test is performed on coarse aggregates and is intended to determine the shape of aggregates i.e., rounded, angular, flaky, or elongated. It consists of a steel frame A metal gauge plate, Flakiness, Elongation And Angularity Number. Elongation Gauge (g) Percentage Weight Retained (%) 63 50 --50 40 81.00 40 25 58.5 31 25 --25 20 40.50 20 16 32.4 16 12.5 25.6 12.5 10 20.2 10 6.3 14.7 Total Table 3 : Recordings for Elongation Index 6. The significance of flakiness and elongation index of aggregate are following: The degree of packing of the aggregate particles of one size depends upon their shape. Estimation of material cost in concrete works. The various studies have been conducted on the use of waste materials in road construction technologies but not much efforts have been put and extensive studies have not yet been made by using variety of plastic waste through wet technology i.e. Each fraction is gauged in turn for thickness on the metal gauge. Therefore, the tests performed on aggregates are very important. Science and Education Development Institute (SEDInst), IJIRAE: Investigating Geometric Characteristics of Cement Concrete Materials, IJIRAE:: Investigating Geometric Characteristics of Cement Concrete Materials, Modeling of Soundness Property-Coarse Aggregates, Pavement materials: Aggregates 22.1 Overview, Directorate Of Technical Education Government of Karnataka Department of Technical Education Board of Technical Examinations, Bengaluru Course Title: SOIL & MATERIAL TESTING LAB, TRANSPORTATION ENGINEERING LAB MANUAL 2013 DETERMINATION OF AGGREGATE CRUSHING VALUE, MATERIALS of CONSTRUCTION Lab Application -Testing of Aggregates TESTING of AGGREGATES for CONCRETE, Laboratory Investigation on the Effects of Flaky Aggregates on Dynamic Creep and Resilient Modulus of Asphalt Mixtures. 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. This test gives the percentage of flaky and elongate aggregate present in the total aggregate sample. w !1AQaq"2B #3Rbr It is crucial to know the properties of the aggregates to be used in the making of concrete in order to obtain the desired quality in a concrete. The Elongation index of an aggregate sample is found by separating the elongated aggregates by sieving. The lack of a traffic signal is often cited as a contributing factor by drivers who are involved in accidents at intersections. This test is not applicable to sizes smaller than 6.3mm. = 45.7%. The total amount retained by the length gauge shall be weighed to an accuracy of at Activities Performed:- Quality Control . The test consists of dividing up and separating, by means of series of sieves, a material into several particle size classification of decreasing sizes. 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