Experiment to determine the aggregate impact value of different coarse aggregate samples, bs 812, aggregate impact value test, plain reinforced concrete aggregate crushing value test scribd scribd is the worlds largest social reading and. Figure 1 thickness gauge flakiness index indicating sizes of openings. What is the significance of flakiness index and elongation. Flakiness, elongation and angularity number scribd. The different values of the elongation index are listed below. D4220 practices for preserving and transporting soil samples. The test is not applicable to material passing a 6. Flakiness index and elongation index test on coarse aggregates.
Iso 5049 1 pdf pdf sales numbers getting iso 5049 1 pdf pdf is easy and simple. What is the significance of flakiness index and elongation index. Flakiness index construction aggregate transport scribd. A study on types and quality of aggregates used in building. Astm d3398 00 standard test method for index of aggregate. Length gauge elongation index has six labeled openings between metal pins for measuring length of particles from each of the six sieve cuts below 50mm, for elongation index. Elongated and flaky stones are normally not very suitable for road works since the shape and the size make them difficult to compact. The comments and the table do not seem to agree with the table stating 76. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the users. Following tests are conducted on coarse aggregates under shape tests. Construction technology and management 42,160 views. Download as docx, pdf, txt or read online from scribd. Dec 18, 2017 determination of flakiness index test.
Flakiness less than 15% elongation less than 15% combined flakiness and elongation less than 25% grading of all in aggregates shall comply with the limits given as per is 383 water for construction purpose conforming to the requirements of is 456. Flakiness index scope this method describes the procedure for the determination of the flakiness index of aggregate that has not more than 5% retained on a 26. Elongation value is 0% because the aggregate is rounded so no any retain value. D3740 practice for minimum requirements for agencies engaged in testing andor inspection of soil and rock as used in engineering design and construction. The value of the flakiness index is calculated from the expression. The elongation index of an aggregate is the percentage by weight of particles whose greatest dimension length is.
In addition, they are representative of the significant digits that should generally be retained. The flakiness index of aggregates is the percentage by weight of particles whose least dimension thickness is less than three fifths 0. The test sample shall consist of clean aggregate which has been dried in an oven at 105 to 110c to substantially constant weight and shall conform to one of the gradings shown in table 1. C127 test method for density, relative density specific gravity, and absorption of coarse aggregate. Elongation index test the test is the determination of the elongation of the. Guidelines for flakiness index calculation 933 page 2 of 3 933. This test is carried out by aashto t 96 or astm c 1. Flakiness, elongation and angularity number free download as word doc.
C128 test method for density, relative density specific gravity, and absorption of fine aggregate. It powered on, showed charged and ready but often would only fire after 23 presses of the test button. Test procedure for determining flakiness index txdot designation. Retrieved 11 01, 2011, from track force and ballast lectures 4. Also explore the seminar topics paper on stone mastic asphalt with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. I could also see that it was receiving the radio trigger from the indicator light but still not flashing until i had a successful test fire first. This method describes the procedures for determining the total, absorbed, and surface free moisture of. Flakiness index, elongation, aggregate crushing value scribd. So, as a result the aggregate that is quarried from rock mass has to be crushed and they should be angular and not have excessively flaky nature. Flakiness definition of flakiness by the free dictionary. 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. Metric sieves imperial sieves sieves normal 14 000 fm topsize.
Limits for flakiness and elongation index are suggested as follow. Explore stone mastic asphalt with free download of seminar report and ppt in pdf and doc format. Note 2 a statement on the precision ofthis testis given in annex b. Quarter the aggregate sample to obtain a minimum of 200 particles passing the 78in.
A particle is considered flaky if it passes through the appropriate slot. The amount of aggregate available should be sufficient to provide. This test is to determine elongation index of the given aggregates sample. Mostly you need to spend much time to search on search engine and doesnt get iso 5049 1 pdf pdf documents that. I have canon speedlites and pocket wizards but they are expensive and a hassel to setup while these have builtin radios. D2850 test method for unconsolidatedundrained triaxial compression test on cohesive soils. Flakiness index test construction aggregate experiment. The flakiness index is defined as the percentage by weight of aggregate particles whose least dimension is less than 0. Ive spent a good amount of my professional career writing a lot of functional tests. I jokingly say if you do not have a flaky functional tests build, you are not doing anything real. A study on types and quality of aggregates used in.
The flakiness index of an aggregate sample is found by separating the flaky particles and expressing their mass as a percentage of the mass of the sample tested. A test on kaolinite of known mby value should be carried out at regular intervals to check the constancy of results, this procedure should also be used to check a new dye solution page 14 en 9339. Elongation index and flakiness index of coarse aggregate bs. Then it would work correctly until a setting was changed or it sat for a few minutes. Flakiness and elongation test construction aggregate. The flakiness index is a measure of the percent, by weight, of flat aggregate particles. Survey of railway ballast selection and aspects of modelling. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Total weight passing flakiness gauge x 100 total weight of test. Elongation and flakiness test free download as word doc. Objective for determination of flakiness index of coarse aggregate, where the size of the coarse aggregate are larger than 6. Obtain a 3 000 gram sample of representative aggregate as directed in att. Flakiness index is the percentage by weight of particles in it, whose least dimension i.
Calculate the total flakiness index in percent as follows. Elongated and flaky stones are normally not very suitable for road works since the. Methods of test for aggregates for concrete, part i. Mar 03, 2012 the value that we get from this test is 15. The american railway engineering association area manual states, laa is right. Perform a wash sieve analysis as directed in test method att26, nesting the. Also not sure how you state a difference of less than 4 as sample 1 has a min value of 74 and a max value of 79 which is a difference of 5 the same can be said for sample 2 and sample 3 have a difference of 7. Full text of iso 50491pdfpdf see other formats iso 5049 1 pdf pdf sales numbers december 16, 2014 iso 5049 1 pdf pdf iso 5049 1 pdf pdf a download. Flakiness and elongation index of aggregate gilson co. Elongation index and flakiness index of coarse aggregate. The objective of the test is to determine the flakiness index of. Both flakiness and elongation tests are not applicable to sizes smaller then 6.
Note 1 an example of a test data sheet is given in annex c. Length gauge, flakiness gauge and shape index calliper flakiness and elongation index test set are used for the determine of physical specifi cation of aggregates. Aggregate quality for road construction will also influence the road performance. The grading or gradings used shall be those most nearly representing the aggregate furnished for the work. Trial mix details physical requirements verification for. The flakiness index is the percentage, by mass, of the particles whose least dimension is less than. Referenced documents purchase separately the documents listed below are referenced within the subject standard but are not provided as part of the standard astm standards.
Flakiness index 100 x m 3 m 2 express the flakiness index to the nearest whole. The most common issue in all these teams is the infamous flaky functional test build. Jan 06, 2017 flakiness index test of aggregates duration. Part 8 materials manual april section 933 method for. Standard test method for unconfined compressive strength of. Length gauge elongation index has six labeled openings between metal pins for measuring length of particles from each of the six sieve cuts below 50mm, for elongation index determinations.
Elongation index is the percentage by weight of particles in it, whose largest dimension i. The elongation index of an aggregate is defined as the percentage by weight of particles whose greatest dimension length is 1. I have interacted with a lot of teams in thoughtworks trying to understand their functional testing issues. Exp 8 penetration test of bitumen civil engineers pk. Flakiness gauge for classification of aggregate humboldt mfg. Flakiness and elongation test free download as word doc. Elongation and flakiness test construction aggregate. Test method to determine the moisture content of lightweight fine aggregate new york state department of transportation, test method number ny 70319 e issue date august 2008 subject code 7. Standard test method for unconfined compressive strength.