Oct 15, 2017· Flakiness Index Ref : IS 2386 (Part I) Purpose : To determine the flakiness index of the coarse aggregate. Significance : Coarse...
Sep 06, 2018· Flakiness Index : Weight of sample passing from flakiness metal gauge : Sample passing from 25 mm to 20 mm metal gauge, Weight of 366 gm Sample passing from 20 mm to 16 mm metal gauge, Weight of 289 gm Now Calculated for Flakiness Index :
DETERMINING FLAKINESS INDEX TXDOT DESIGNATION: TEX224F CONSTRUCTION DIVISION 1 – 2 12/04–07/16 Test Procedure for DETERMINING FLAKINESS INDEX TxDOT Designation: Tex224F Effective Dates: December 2004–July 2016. 1. SCOPE Use this test method to determine the percentage of particles in a coarse aggregate
Asphaltic concrete materials and crumb rubber (CR) were characterized by carrying out particle size distribution, specific gravity, flakiness index, aggregate crushing value, and adsorption tests on the aggregates. Penetration, softening point, and flash point tests were also carried out on bitumen.
Flakiness Gauge: Used for Determination of flakiness index of coarse aggregate It consists of a steel frame with a sliding panel having slots of different dimensions Elongation Gauge: Used for determination of elongation index of aggregates.
EFFECT OF COARSE AGGREGATE ON PROPERTIES OF SELFCOMPACTING CONCRETE ... Although the flakiness index of the 8/11 mm granite is low, it ... 15 vol.% of the aggregate used in the concrete investigations. Table 1: Indexes for particle shape and flakiness of the coarse aggregate; see Table 5 for grading fractions Reference gravel Crushed basalt ...
Jun 05, 2016· Flaky and elongated particles are considered undesirable for base coarse construction as they may cause weakness with possibilities of braking down under heavy loads. BS1241 specifies a Flakiness index not exceeding 30% irrespective of the aggregate size.
The proportions arrived for different aggregate sizes for DBM mix are as given below > 20 mm aggregate 20% > 12 mm aggregate 25% > 6 mm aggregate 30% > Stone dust 25% The proportions arrived for different aggregate. Stability. The variation of stability with increase in flakiness index is .
Coarse aggregate is used to describe particles larger than mm, and the term fine aggregate is used for particles smaller than Fine aggregates contain particles in the size range 75 µm to mm, and coarse aggregates from to about 40 mm, except for mass concrete which may contain particles up to 150 mm.
All samples of coarse aggregate tested in laboratory passed the soundness tests. Na2SO4 soundness value range was 05% and mode was 0%. Specified maximum value for this is 12%. Coarse aggregate tested in laboratory had MgSO4 soundness value range 017% and mode was 4%.
how to improve flakiness index on a aggregate crushing plant. processor flakiness index coarse aggregate – how to improve flakiness index on a aggregate >>Online; how to improve flakiness index on a aggregate crushing plant. how to improve flakiness index on a . Improving cost efficiency and aggregate quality in crushing – Our crusher. 15 ...
1. Sieve a sample of coarse aggregate and collect those particles retained on the specified sieve size(s); usually the inch ( mm) or No. 4 ( mm) sieve are specified. Reduce each specified size fraction until approximately 100 particles are obtained for each specified size fraction. 2. Checking for flatness OR elongation.
Void Content Apparatus, Coarse Aggregates. Used to determine the void content of uncompacted coarse aggregates. H1684 Flakiness Gauge for Classification of Aggregate. For determining flakiness index of Aggregate Particles. Complies with BS 812. Flakiness Sieves Set. Sieves used to determine flakiness index, comply with BS 812.
aggregate in this study exhibits low values of elongation and almost negligible flakiness index. Fl 0 5 10 15 20 25 30 35 NS GCS EI Figure 3. Comparative Flakiness and Elongation Index of Aggregate Specimens Toughness of aggregate The strength of normal and geometrically cubical shaped aggregate are evaluated from three tests; AIV, ACV and 10% fines.
Coarse aggregate size selection is a function of layer thickness, the nominal aggregate size is generally 2025% of the layer thickness specified. Asphalt types Mix design considerations 2 Figure 1: Typical asphalt placement and completed layers Figure 2: Shows some examples of the use of asphalt
Various shape parameters. As per Indian standard IS2386(I) (1999) flakiness and elongation index and angularity number are used as a measure of aggregate shape. ASTM D3398 (2000 ) proposes a parameter called particle index to characterize shape and texture of aggregates.