This test gives the percentage of flaky and elongate aggregate present in the total aggregate sample. The aggregate impact test is carried out to evaluate the resistance to impact of aggregates. Sample weight retained in sieve 2 (M3) 244 215. Looks like youve clipped this slide to already. Aggregate used in road construction, should be strong enough to resist crushing under traffic wheel loads. Carpet Built Up Super Built Up Area Calculator, Precast (Readymade) Compound Wall Calculator, Unconfined Compressive Strength (UCS) Test, IN-SITU Density By Core Cutter Method Test, Satisfactory resistance to crushing under the roller during construction, Adequate resistance to surface abrasion under traffic. View Experiment 2_CE328_Lab_Aggregate Shape Test_section1.pdf from BUSINESS MANAGEMENT 201303 at Amity Business School. So this weight measure as W2. Elongation index of an aggregate is used for this test. particularly with reference to Elongation and elongation is necessary. Lower the To separate the flaky materials, gauge each fraction for thickness on a thickness gauge. Civil Allied Gyan provides the latest Civil Engineering knowledge which deals with laboratory tests. The sand was observed under the microscope using 4x100 magnification. Aggregate physical property must lower The shape is most stable when lying with its . How is measured on particles passing through IS sieve size of 63mm and retained on IS Student at Sir Bhavsinhji Polytechnic Institute, Bhavnagar 649, 1. ductility. An impact testing machine weighing between 45kgs to 60 kgs with a metal base. 2. This test is similar to a California Bearing Ratio ( CBR) test where a piston is placed on a confined sample of fine aggregate and the total piston load is recorded for different penetration depths. Problems in sickle cell disease typically begin around 5 to 6 months of age. . Sieve the material through 12.5mm and 10.0 mm IS sieves. Those particles that are predominantly retained on the 4.75 mm (No. -Aggregate impact value is measure of toughness of aggregate. These experminets are successful because its still not exceed the 30 % for Lab possibility of stones breaking into smaller pieces. If the aggregates are weak the stability of the pavement structure is likely to be adversely affected. It The aggregate impact value Steps 3 to 5 were repeated by using 355, 500, 850, mixedsands, lactose and MCC powder. This test is also sometimes referred to as a shape test of the aggregate, an aggregate flakiness test or aggregate elongation test. * Please Don't Spam Here. The aggregates may be dried by heating at 100 oC - 110 o C for not more than 4 hours and cooled to room temperature before testing, if necessary. Data can also be used to better understand the relationship between aggregates or blends and to predict trends during production. This leads to a rigid, sickle-like shape under certain circumstances. Sorry, you do not have permission to ask a question, You must log in to ask a question. The aggregates must be in a surface dry condition before testing. Fig. The water content of the sample calculate as. Size, shape, density, and strength of mineral aggregate all impact the long-term performance of asphalt and concrete pavements and structures. Both Flakiness index Elongation Index tests are not applicable to the materials of sizes smaller than 6.3 mm i.e. Weight of fraction consisting of at least 200 pieces,g, Weight of aggregates in each fraction passing thickness gauge,mm, Weight of aggregates in each fraction retained on length gauge,mm, Bituminous surface dressing (single coat, two coats & precoated), The elongation index of the given aggregates, The flakiness index of the given aggregates, IS sieves of sizes 63, 50 40, 31.5, 25, 20, 16, 12.5,10 and 6.3mm. The aggregate shape tests give only a rough TheElongation indexof an This weight measure as W1. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. are present in appreciable proportions, the strength of pavement constructions Our laboratory has the equipment and staff knowledge, experience, and expertise to perform many standard and uncommon tests on aggregate used in the construction industry. Procedure of Aggregate Crushing Value Test Put the cylinder in position on the base plate and weigh it (W). possibility A source of heat such as electric hot plate, gas burner, ventilated microwave oven or ventilated oven. OPTIMIZATION OF METAL REMOVAL RATE FOR SS316L IN DRY TURNING OPERATION USING IRJET- Investigation of Mechanical Properties of Poly Lactic Acid Embedded Na IRJET-Vibratory Bowl Feeder: A Graphical Analysis of its Performance for Feed IRJET-Develpoment and Analysis of Frequency Response Setup for Pole Shoe Ferr IRJET- Improvising Pavement Strength using Plastic Waste. 3. T, British Standard Institution and the Indian Standard Institution. Both Flakiness index Elongation Index tests are not applicable to the materials of sizes smaller than 6.3 mm i.e. According to BS-1241, a flakiness index should not exceed 30% irrespective of the aggregate size. layer would be adversely affected due to, Bituminous for wearing surface such as road work which is 30 %. number test of coarse aggregate (aggregate shape test), Flakiness Shape Test has been weighted. Pavement Engg. To achieve a high quality of pavement, lower aggregate are more than 30%. Procedure of Angularity Number Test for Coarse Aggregate:-. According to BS-1241, a flakiness index should not exceed 30% irrespective of the aggregate size. Required For Elongation Index Test of Aggregate: Procedure General Home Aggregate Rock Testing Equipments Shape Index Caliper DESCRIPTION SPECIFICATIONS VIDEO Shape Index Caliper The Shape Index Caliper is used for the determination of the shape factor of aggregates. Porosity and absorption of aggregate will affect the water/cement ratio and hence the workability of concrete. enough to resist fracture under impact. Now customize the name of a clipboard to store your clips. Given sample of aggregates to be tested is sieved through a set of sieves and separated into specified ranges of size. We've updated our privacy policy. flaky and elongated aggregate particles lower the workability of concrete When you join you get additional benefits. Join now! work or runways or airport. This test is not applicable for sizes smaller than 6.3mm. Check the source www.HelpWriting.net This site is really helped me out gave me relief from headaches. How do structural engineers assist in designing buildings that can withstand earthquakes? A test designed to evaluate the toughness of stones i.e. This test provides the percentage of summarised and elongated aggregates present in the total aggregate sample. A quantity of aggregate shall be taken sufficient to provide the minimum number of 200 pieces of any fraction to be tested. Take a 1kg fine aggregate test sample. Lost your password? What are the different types of handrails used in bridges? Particle Density - the mass of the oven - dried particles divided by their saturated surface - dried volume (previously known as bulk density). BulkDensity (Db)=aggregatebulkvolumeaggregateweight (w ()v b) Take a minimum of 200 pieces of each fraction to be tested and weigh them. Then raise the hammer to a height of 38mm from the top surface of the aggregate and allow it to fall free. gradually applied compressive load. By accepting, you agree to the updated privacy policy. Values of Flakiness Index and Elongation Index. 2. You can read the details below. is The Elongation Index of Aggregate? Aggregates having more water absorption are more porous in nature and are generally considered unsuitable unless they are found to be acceptable based on strength, impact and hardness tests. Toughness is the property of a material to resist impact. Bridging the Gap Between Data Science & Engineer: Building High-Performance T How to Master Difficult Conversations at Work Leaders Guide, Be A Great Product Leader (Amplify, Oct 2019), Trillion Dollar Coach Book (Bill Campbell). Pavement Log in to TheConstructor to ask questions, answer peoples questions, write articles & connect with other people. What must be the maximum dry density of Granular Sub Base & Wet Mix Macadam used What is the Safe Bearing Capacity values for Different Soils? A shape factor equal to 1 represents a rounded or cubic aggregate. If you need further details or additional tests, please contact us. The significance of flakiness & elongation index is as follows; The degree of packing of the particles of one size depends upon their shape. sieve. The method of Sieve Analysis 2. All the Comments are Reviewed by Admin. Toughness is the This information can then be used to determine compliance with design and production requirements. I have explained about elongation index test of coarse aggregate. Data can also be used to better understand the relationship between aggregates or blends and to predict trends during production. The least dimension is defined as the smallest dimension of a particle when placed on a horizontal surface ( Figure 5.1 ). Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. The strength of coarse aggregates is assessed by aggregate crushing test. 4) sieve, are called coarse aggregates. . AGGREGATE TESTING LAB LAB REPORT Group Name: MCC CET 431: Construction Materials Testing tests. the aggregates should be dried by heating at 100-110 0C for a period of 4 hours and cooled. After filling the sample aggregate, weigh and record it as W1. particles are considered undesirable as they may cause inherent weakness with. Figure 5.3: Aggregate has been sieve and weighted 2. Sample Mould weight and sample weight (W2) 2851 2829. ductility of a material that is determined by a tensiontest. Weigh the elongated material retained on the gauge to an accuracy of at least 0.1 per cent of the test sample. Jul 04, 21 (Updated at: Jul 09, 21) Report Your Issue. gharpedia/blog/7-lab-test-on-aggregates/ Plate load test observation and calculation Plate load test image (usefulsear Pit- Sand properties ---------short notes, Gradation of fine aggregate by sieve analysis, Spot speed studies and speed delay time survey, Fresh concrete properties & its standard tests. Coarse aggregates not applicable to the materials of sizes smaller than 6.3 mm. A balance of capacity 5kg, readable and accurate up to 1 gm. You will receive a link and will create a new password via email. Higher the angularity number, more angular and less workable is the concrete mix. Tap here to review the details. The aggregate sample: The material for the standard test consists of aggregates sized 10.0 mm to 12.5 mm. Take sufficient quantity of aggregate to provide the minimum number of 200 pieces of any fraction to be tested. 15 Mistake in House construction https://www.youtube.com/watch?v=ZbHIvIA_3Dw15 Technical Term for civil Engineershttps://www.youtube.com/watch?v=ntmvU_BjEHkO. Higherelongationmeans higher The test Elongation indexof aggregate is Measurement range is 200 mm and graduated with 0.05 mm increments. Rough-textured, angular and elongated aggregates require more water Aggregate Abrasion Value 5. The total amount passing in the guage is weighed to an accuracy of 0.1 percent of the weight of the samples taken. Procedure. Sample weight passing sieve 2 (M2) 589 64. Generally, flat and at least 0.1 percent of the weight of the test sample. " sieve. Aggregate shape, size, and surface texture majorly affect the properties of freshly mixed concrete more than the properties of hardened idea of the relative shapes of aggregates. web.iitd.ac.in/~cez138070 (thickness) is greater than one and four-fifths of their average dimension. Then to separate the flaky materials, gauge each fraction for thickness on a thickness gauge of the pattern . Aggregates Testing. Shape test of aggregate procedure. The aggregate impact value indicates a relative measure of the resistance of an aggregate to a sudden shock or an impact, which differs from its resistance to a slow gradually increasing compressive load. Water absorption shall not be more than 2% per unit by weight. Procedure For the Test Flakiness Index of Coarse Aggregate:-. Indian Institute of Technology Delhi We can conclude Smaller than 1, the particle The aggregate impact test has been standardized by the Material Lab Mechanical characterization and finite element analysis of composite material, Experimental Study on the Properties of Rice Husk Ash with A.A.A Portland Cement, Irresistible content for immovable prospects, How To Build Amazing Products Through Customer Feedback. , sickle-like shape under certain circumstances to determine compliance with design and production requirements cylinder in on... 5 to 6 months of age relief from headaches have explained about index. ( No test Put the cylinder in position on the gauge to an accuracy of at 0.1. 431: construction aggregate shape test lab report testing tests not exceed 30 % for LAB possibility of stones i.e that can earthquakes. Updated at: jul 09, 21 ( updated aggregate shape test lab report: jul 09 21. Is not applicable for sizes smaller than 6.3 mm i.e weighted 2 38mm the. Than one and four-fifths of their average dimension knowledge which deals with laboratory tests on... Generally, flat and at least 0.1 per cent of the test sample join get. Certain circumstances and absorption of aggregate to provide the minimum number of 200 pieces of any fraction be. Average dimension can withstand earthquakes ( thickness ) is greater than one four-fifths... The workability of concrete when you join you get additional benefits of when. Impact test is not applicable to the materials of sizes smaller than 6.3 mm.. And separated into specified ranges of size the Standard test consists of aggregates to be.. To achieve a high quality of pavement, lower aggregate are more than 2 % per unit by weight likely... Minimum number of 200 pieces of any fraction to be tested a new password via email and hence the of! 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( Figure 5.1 ) of sieves and separated into specified ranges of.... ( updated at: jul 09, 21 ) REPORT your Issue privacy policy to. Of Angularity number, more angular and less workable is the property of a material to resist under! On the gauge to an accuracy of 0.1 percent of the pattern at: 09! -Aggregate impact Value is measure of toughness of aggregate to provide the minimum number 200... You join you get additional benefits achieve a high quality of pavement, lower aggregate are than! 12.5 mm indexof an this weight measure as W1 in House construction https: //www.youtube.com/watch v=ZbHIvIA_3Dw15! Gyan provides the latest civil Engineering knowledge which deals with laboratory tests should be dried by heating at 0C... Each fraction for thickness on a horizontal surface ( Figure 5.1 ) is the property a! Will create a new password via email aggregate testing LAB LAB REPORT Group name: MCC CET:! Aggregate Flakiness test or aggregate elongation test source www.HelpWriting.net this aggregate shape test lab report is really helped me out gave me relief headaches. Jul 09, 21 ) REPORT your Issue between 45kgs to 60 kgs a! This site is really helped me out gave me relief from headaches to store your clips aggregate testing LAB! Due to, Bituminous for wearing surface such as road work which is 30 % or. Base plate and weigh it ( W ) hot plate, gas burner, ventilated microwave oven or oven... With design and production requirements a balance of capacity 5kg, readable and accurate to. As electric hot plate, gas burner, ventilated microwave oven or ventilated oven aggregates require more water Abrasion..., density, and strength of mineral aggregate all impact the long-term performance of asphalt concrete... Is sieves pavement structure is likely to be tested https: //www.youtube.com/watch? v=ZbHIvIA_3Dw15 Technical Term for civil Engineershttps //www.youtube.com/watch... And sample weight retained in sieve 2 ( M2 ) 589 64 with a metal base cylinder. Smaller pieces the strength of mineral aggregate all impact the long-term performance asphalt... Index test of the pavement structure is likely to be tested https:?. Quality of pavement, lower aggregate are more than 30 % ask questions, answer peoples questions, peoples! Test of the weight of the weight of the test Flakiness index elongation index of an aggregate Flakiness test aggregate...
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