Elongation Index Table 1: Minimum Mass of the Test Portion Nominal Maximum Size of Aggregate Minimum Mass of Test Portion after Rejection of Undersized/Oversized particles mm kg 40 15 28 5 20 2 14 1 10 0.5 The aggregate used in this experiment was the same sample used in the flakiness index portion of this experiment, and thus it has the same ...
An aggregate with a maximum size of 14 mm is also used, mainly for precast work. Fine aggregate 5 down Normally not more than 10 % should be retained on a 5-mm sieve, and preferably not more than 10 % should pass a 150 µ m sieve Note: Where the fine aggregates are predominantly of one size (e.g. dune and beach sands).
ODOT specifies a maximum acceptance limit of 40 percent of aggregate loss to ensure a durable chip seal performance . Unit A had the highest FI at 13.1 percent, and unit H had the highest aggregate loss of 8.6 percent. Generally, all aggregates have passed the flakiness and abrasion acceptable specification limits.
aggregate conforming to the following gradation requirements. Sieve Size % Passing Standard Sieve 40 mm 95 – 100 20 mm 35 – 70 10 mm 10 – 30 5 mm 0 – 5 5.0 CONSTRUCTION METHODS 5.1 General The Contractor shall backfill the excavated areas with the specified type of backfill material, unless
Description. The Liya Test flakiness index is based on the flatness determination of aggregates. According to the BS standard, it is used to determine whether the amount of flat grains in the aggregate stack is within acceptable limits, ie the grain thickness (smallest size) is less than 0.6 times the average of the sieve mesh of the grain class range to which it 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
Flakiness Index Apparatus • Thickness gauge • Weighing balance • IS Sieves of sizes 63, 50, 40, 31.5, 25, 20, 16, 12.5, 10 and 6.3 mm • Flakiness Index of aggregate is the percentage by weight of particles whose least dimension [thickness] islessthanthree- fifths[0.6] timesoftheir meansize • The test is not applicable to aggregates ...
Answer (1 of 2): Yes, Obviously. Flakey material affects the strength of concrete both directly and indirectly. Here I'll discuss how. First, we'll have to know how concrete is determining it's strength. It's by Cement-Aggregate bond. Whenever concrete samples are being tested, cement-agg bond...
Observations of Los Angeles Test Original weight of aggregate sample = W 1 g Weight of aggregate sample retained = W 2 g Weight passing 1.7mm IS sieve = W 1 - W 2 g Abrasion Value = (W 1 - W 2 ) / W 1 X 100 Results Los Angeles Abrasion Value = Recommended Los Angeles Test Values for Pavements Los Angeles test is commonly used to evaluate the hardness of aggregates.
Objective For determination of flakiness index of coarse aggregate, where the size of the coarse aggregate are larger than 6.3mm . Reference Standards IS : 2386 (Part I) – 1963 – Method of test for aggregates for concrete (Part I) Particle size …
IS : 2386 ( Part I ) - 1963 Indian Standard METHODS OF TEST FOR AGGREGATES FOR CONCRETE PART I PARTICLE SIZE AND SHAPE 0. FOREWORD 0.1 This Indian Standard (&rt I) was adopted by the Indian Standards Institution on 22 August 1963, after the draft finalized by the Cement
Sieve: 1.70 mm, 2.36 mm, 4.75 mm, 6.3 mm, 10 mm, 12.5 mm, 20 mm, 25 mm, 40 mm, 50 mm, 63 mm, 80 mm IS sieves. The 5 kg or 10 kg capacity balance is used. Drying the oven. Miscellaneous like a tray; ... Prepare the sample by the portion of an aggregate sample retained in the 1.70 mm ...
limits, it may be used, provided its Wet Strength is at least 60 kN greater than the specified maximum value for the relevant aggregate quality category. b) The Wet Strength and the Wet / Dry Strength Variation tests shall be carried out on the 13.2 mm to 9.5 mm fraction.
According to BS-1241, a flakiness index should not exceed 30% irrespective of the aggregate size. Maximum permitted elongated index is 35%, 40% or 45% for aggregate size 21/2" – 2", 11/2" - ¾" and 1/2" - ⅜". Both Flakiness index …
Flakiness Index tests shall be undertaken on aggregate sizes of 10 mm or above. (i) For all source rock (except granitic sources) with an assigned Los Angeles Value of 25 or less, the Flakiness Index of aggregate shall not exceed the values specified in Table 831.042. Table 831.042 Flakiness Index Requirements (LAV ≤25) Class of Aggregate ...
BS-1241 specifies a Flakiness index not exceeding 30% irrespective of the aggregate size. Maximum permitted Elongated index is 35, 40 or 45% for aggregate sizes 2 ½'' – 2'', 1 ½'' – ¾'' & ½'' – 3/8''. Both Flakiness and Elongation tests are not applicable to sizes smaller then 6.3mm i.e. ¼'' sieve.
The value of flakiness index and elongation index so found are added up. 3.1.2: ... not vary from the low limit on one sieve to the high limit on the adjacent sieve or the vice ... for sample having aggregate passing through 37.5 mm sieve, bigger size mould of volume …
Density of Aggregate CSA A23.2-10A ASTM C 29 Standard Proctor ASTM D 698 MRB-A213 Sand Equivalent ASTM D 2419 AASHTO T176 MRB-A215 One test per hour of production or as directed by the Engineer. Coarse Aggregate Only: Crush Count ASTM D 5821 MRB-A203 Shale Content MRB-A208 Flakiness Index MRB-A216 Micro-Deval CSA A23.2-29A ASTM D 6928
recommended size or grading limits of aggregate is determined by the pipe diameter, see Table 2. ... Nominal pipe diameter, mm Aggregate size, mm Graded Single sized Not exceeding 140 - 4/10 Exceeding 140 but not exceeding 400 2/14 or 4/20 4/10, 6/10 or 10/20 Exceeding 400 2/14, 4/20 or 4/40 4/10, 6/14, 10/20 or 20/40 ... Flakiness index BS EN ...
The flakiness index is defined as the percentage by weight of aggregate particles whose least dimension is less than 0.6 times their mean size. Flakiness gauge (see Fig-4) is used for this test. Test procedure had been standardized in India (IS: 2386 part-I).
Aggregate impact value is then the percentage of fine passing through 2.36 mm sieve to total aggregate weight. ... pit sand is a coarse type of sand and this is not recommended if the sand is coarser than the acceptable limits. ... Flakiness index of aggregates should not …
The grading and grading limits are usually expressed as the percentage of material passing each sieve. Fig. 5-6 shows these limits for fine aggregate and for one size of coarse aggregate. There are several reasons for specifying grading limits and nominal maximum aggregate size; they affect relative. 82. Design and Control of Concrete Mixtures ...
weight of coarse aggregate is undesirable. The test is carried on aggregate sizes between 63 mm and 6.3 mm. Apparatus: 1- A balance of accuracy of 0.1% of the sample weight. 2- A set of sieves. 3- A special scale for elongation index. 4- A special scale for flakiness index.
AGREGATE TEST MACHINES. General & Geometric Properties; Chemical Properties; Mechanical & Physical Properties; Thermal & Weathering Properties; CONCRETE TEST DEVICES
The crushed aggregate sample which is finer than 2.36 mm is separated and expressed as a percentage of the original weight taken in the mould. The percentage of weight passed through the 2.36m IS sieve is known as Aggregate crushing value.. In situations, when the aggregate value 30 or higher the result may be a mistake and in such cases, the "ten percent fines value" should be determined ...
Test Value of Coarse Aggregate (20 Mm) Coarse aggregate Aggregate Impact value 12.4 Aggregate Crusher Value 14.3 Aggregate Abrasion Value 16.3 Specific Gravity 2.85 Water Absorption 0.94% Gradation Falls in 20 mm size Combined Flakiness Index, Elongation Index 22.9 % C. Coconut Shell: Table – 4 Physical Properties of Coconut Shell
The flakiness index of aggregate is the % by weight of the particles (aggregates) whose thickness is less than 3/5 th (0.6 times) of their mean dimension." Elongation Index The El ongation index of aggregate is the % by weight of the particles (aggregates) whose length is greater than 1 and 4/5 th (1.8 times) of their mean dimension."
The flakiness index for surfacing asphalt and rolled-in-chippings shall not exceed the values given in table 4202/5. The grades refer to the single sized crushed stone grades as defined in sub clause 4302(b). Table 4202/5 Nominal size of aggregate (mm) Maximum flakiness index % Surfacing aggregate Rolled-in-chips (all grades)
Table 4-1 sieve analysis of (3/4) aggregate which Enkulu aggregate production site. Sieve size mm Retained gm. % of Retained wt. of pass % of Pass Specification limit 25 0 0 5050 100 100 19 151.5 3 4898.5 97 85-100 13.2 2833.05 56.1 2065.45 40.9 71-84 9.5 1338.25 26.5 727.2 14.4 62-76
Is:2386(PartIll)-1963 2.2 Method I - Aggregate Larger than 10 mm 2.2.1 4 b! 4 4 4 f > g> Apparatus - The apparatus shall consist of the following: Balance -A balance or scale of capacity not less than 3 kg, readable and accurate to O-5 g and of such a type and shape as
