In South Africa, the standard test method used for the determination of flakiness index of coarse aggregates is contained in TMH1 Method B3 (TMH 1 1986). In this method, a metal gauge with rectangular slots representing aggregate sieve sizes are used to obtain the masses of aggregate particles passing the slots. The flakiness index (in percent) is
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. The aggregate to be classified is separated into seven sieve fractions from 6.3 to 63 mm and each fraction is examined .
Aggregate Flakiness Index Value Is2386. Objective for determination of flakiness index of coarse aggregate, where the size of the coarse aggregate are larger than 6m eference standards is 2386 part i 1963 method of test for aggregates for concrete part i.
processor flakiness index coarse aggregate Manual of Aggregate Quality Test Procedures Illinois Test Procedure 205 Insoluble Residue and Magnesium Oxide In Coarse Aggregate 73 Illinois Test Procedure 327 Resistance of Coarse Aggregate to Degradation by Abrasion in the MicroDeval Apparatus 77 Hard copies uncontrolled .
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. Flakiness and elongation tests are not applicable to sizes smaller than 6.3mm. Test procedure:
i) Flakiness Index: The flakiness index of aggregate is the percentage by weight of aggregate particles whose least dimension or thickness is less than 3/5th or 0.6 of their mean dimension. It is applicable to sizes larger than 6.3 mm. It is desirable that the flakiness index of aggregates used in road construction is less than 15% and normally ...
tests on aggregate:the test usually conducted on coarse aggregates are >particle size >flakiness &elongation index >moisture content >specific gravity and water absorption >ten percent fine value >aggregate crushing value >aggregate impact value > aggregate abrasion value 12 13.
The flakiness and elongation indexes defined in the British Standards, which require manual measurement, are themselves not good measures of flakiness or elongation of the aggregate. The mean thickness/breadth and length/breadth ratios directly obtainable from DIP may be better measures, as will be discussed in the paper.
To determine the Flakiness Index of the given sample of course aggregate. CODE OF REFERENCE: • IS 2386(Part 1):1963 Methods of Test for Aggregates of Concrete- Particle Size and Shape. Reaffirmed Dec 2016 • ASTM 4791-10: Standard Test Method for Flat Particles, Elongated Particles or Flat Elongated Particles in Coarse Aggregates, ...
Cement and Concrete Research 29 (1999) 1403–1410 Particle shape analysis of coarse aggregate using digital image processing A.K.H. Kwan*, C.F. Mora, H.C. Chan Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China Received 30 October 1998; accepted 11 May 1999
Mean size of aggregates. Mean size of aggregates is defined as the mean of two seive sizes, between which the particle is retained. Mean size = (Passing sieve size + Retaining sieve size)/2. Flakiness index. The percentage by weight of flaky particles present in a given test sample. Elongation index
DETERMINING FLAKINESS INDEX TXDOT DESIGNATION: TEX-224-F CONSTRUCTION DIVISION 1 – 2 EFFECTIVE DATE: AUGUST 2016 Test Procedure for DETERMINING FLAKINESS INDEX TxDOT Designation: Tex-224-F Effective Date: August 2016 1. SCOPE 1.1 Use this test method to determine the percentage of particles in a coarse aggregate
27.03.2020 · Ref : IS 2386 (Part I) Purpose : To determine the flakiness index of the coarse aggregate. Significance : Coarse aggregate having flakier particles will adversely affect the strength of concrete. Definition : The flakiness index of the aggregate is the percentage by weight of particles in it, whose least dimension (thickness) is less than three fifth of their mean dimension.
Flakiness Index Test on Aggregates for Shape Gharpedia. The flakiness index of course aggregate is defined in percentage by weight of aggregate particles and least dimension (thickness) of those particles should not be less than 06 times their mean area Flakiness index test is not applicable for aggregates sizes smaller than 63mm
For crushed aggregate, the particle shape and surface texture depend on the nature of the parent material and on the type of crusher and its reduction ratio. The flakiness index is the weight of flaky particles as a % of the sample weight. Elongation index is defined similarly.
processor flakiness index coarse aggregate. processor flakiness index coarse aggregate; Leave a Reply. 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 times the mean sieve size of the size fraction to which the particle belongs.
Determination of flakiness index, Determination of elongation index, and Determination of angularity number. 2. SIEVE ANALYSIS 2.1 Object - This method covers the procedure for determination of particle size distribution of fine, coarse and all-in-aggregates by sieving or screening. 2.2 Apparatus