Generally, flat and elongated particles are avoided or are limited to about 15 % by weight of the total aggregate. 2. Apparatus required. Fig. 1: Balance. Balance should be able to weigh upto 1 g. Fig. 2: Sieves. Sieves required are 63, 50, 40, 31.5, 25, 20, 16, 12.5, 10 and 6.3 mm (Based on requirement and Gradation of Aggregate).

Calculation. In order to calculate the elongation index of the entire sample of aggregates, first the weight of each fraction of aggregate passing and retained on the specified set of sieves is noted (Y1, Y2, Y3, Y4…..etc). Each piece of these are tried to be passed through specified length of the gauge length with its longest side and those ...

Aggregate crushing plant produce construction aggregates widely used for making Aggregates are the most mined material in the world Large stone quarry and sand and gravel operations exist near virtually all population centers jaw crusher which is a type of highly efficient and energy saving crushing equipmentaggregate crushing plant layout …

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 Elongation Index tests are not applicable to the materials of sizes smaller than 6.3 mm i.e. ¼ ...

The main objective of this work is to obtain a 5–10 mm aggregate fraction of RCA and RAP, to obtain an appropriate recycled coarse aggregate for manufacturing hot mix asphalt (HMA).

IS: 2386 (Part 1)–1963, Method of test of aggregates for formation of concrete. IS: 383–1970, Specification for coarse and fine aggregate from natural source for formation of concrete. Procedure For The Test Flakiness Index of Coarse Aggregate :-. Sieve the aggregate sample with sieves specified in Table. Take sufficient quantity of ...

METHOD B3T TENTATIVE METHOD FOR THE DETERMINATION OF THE FLAKINESS INDEX OF A COARSE AGGREGATE SCOPE. The Flakiness Index of a coarse aggregate is determined by gauging screened-out fractions with the appropriate slot(s) given in Table I below. Aggregate retained on the 75 mm and passing the 4,75 mm …

The flakiness index of an aggregate sample is found by separating the flaky particles and expressing their mass as a percentage of the sample tested. The test is not applicable to material passing a 6.30mm BS test sieve or retained on a 63.0mm BS test sieve. This is a revision of the 1985 edition (see IRRD 285408).

Gilson carries both gauges for determining Flakiness or Elongation of Aggregates. HM-925 defines Thickness and HM-926 determines Length of aggregate. Log in; ... 10, and 6.3mm. These are available as 200mm diameter brass frame sieves with stainless steel cloth as ISO Test Sieves. Read More... Thickness Gauge (Flakiness Index) Starting at …

1. The Flakiness Index on an aggregate is = Total weight passing Flakiness Gauge x 100 / Total weight of test sample =_____(%) 2. The Elongation Index on an aggregate is = Total weight retained on Elongation Gauge x 100 / Total weight of test sample =_____(%) 7. Video Flakiness and Elongation Index 8. Download D o w n l o a d P D F

The Flakiness Index test determines the percentage by weight of particles whose least dimension (thickness) is less than three-fifths (0.6 times) of their mean …

likely to be adversely affected. The strength of coarse aggregates is assessed by aggregates crushing test. The aggregate crushing value provides a relative measure …

This test does not apply to sizes smaller than 6.3mm. 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:

7 Aggregate Test: Method & Procedure. Aggregates are the most basic material used in construction. Whether you're constructing a parking lot, driveway, or sidewalk, the foundation of the infrastructure requires high-quality aggregate. Aggregates are raw material used extensively in the construction of streets, concrete, tiles, bridges, and ...

Test for Determination of Elongation Index. The elongation index on an aggregate is the percentage by weight of particles whose greatest dimension (length) is greater than 1.8 times their mean …

Water Absorption = (MW/MD)*100. The specific gravity of aggregates normally used in road construction ranges from about 2.5 to 2.9. Water absorption values ranges from 0.1 to about 2.0 percent for aggregates normally used in road surfacing. Also read: Specific Gravity & Water Absorption Test Procedure of Aggregates.

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 ...

Jan 21 2024. Aggregate Shape Test. Objective. To determine the combined flakiness and elongation Index of the given coarse aggregate sample. IS Standards used: IS: …

IS 2386(Part 1):1963 Methods of Test for Aggregates of Concrete- Particle Size and Shape. Reaffirmed-Dec 2016 4. Procedure 1. A quantity of aggregate shall be taken sufficient to provide the minimum number of 200 pieces of any fraction to be tested. 2. The sample shall be sieved with the sieves specified in Table 1: Size of Aggregate

The Flakiness Index test determines the percentage by weight of aggregate particles whose least dimension is less than 0.6 of their mean dimension. This test is applicable only to coarse aggregates. To calculate the flakiness index of a sample, the weight of each fraction of aggregates passing and retaining on specified sieves is noted.

The apparatus shall be consisting of following:-Weight Balance (Digital balance):-Used for weighing the aggregate sample and It shall have an accuracy of 0.1 percent of the weight of the test sample.Elongation or Length gauge:-Used for passing different sizes of aggregate between different size ranges gaps on the gauge.Sieves sizes:- …

The flakiness index of an aggregate sample is determined by sieving the sample of aggregates through specified sieves to separate the aggregates into fractions of different sizes. Sizes of the sieves used for this purpose are :- 63 mm, 50 mm, 40 mm, 31.5 mm, 25 mm, 20 mm, 16 mm, 12.5 mm, 10 mm and 6.3 mm. The test is not applicable to …

Elongation is calculated using the following formula: Elongation (%) = (Change in length / Original length) x 100. The change in length refers to the difference between the final length and the original length of the wire. The original length is typically measured before the tensile test is conducted.

IS: 383–1970, Specification for coarse and fine aggregate from natural source for formation of concrete. Procedure For the Test Flakiness Index of Coarse Aggregate:-. Sieve the aggregate sample with sieves specified …

Fig.: Elongation Index Gauge Test Procedure Determination of Flakiness Index. Sieve the aggregate particles and divide them into groups such that the particle sizes in each group are closely related, for example, 2.5-2 in., 1.5-0.75 in., etc. The intent of dividing the sample into factions is to find the individual flakiness index corresponding …

The following steps are involved in the elongation index test procedure: Take a representative aggregate sample containing a minimum of 200 particles of any fraction. Sieve the aggregate sample through the specified sieves, ranging from 63mm to 6.3mm. Disregard the aggregate retained on 63mm sieve and that which passes …

The following tests which are primarily conducted on coarse aggregates to determine its physical and mechanical properties are given below: Sieve Analysis. Aggregate Crushing test. Aggregate Impact test. Aggregate Abrasion test. Shape test (Flakiness index test and Elongation index test) Soundness test.

SCOPE – This method of test lays down the procedures for determining the elongation index of coarse aggregate. SAMPLE – A quantity of aggregate shall be taken sufficient to provide the minimum number of 200 pieces of any fraction to be tested. The sample will be taken by sieving the total sample of aggregate and 200 samples will be …

The objective of this test is to: Determine the aggregate crushing value of coarse aggregate. Assess suitability of coarse aggregates for use in different types of road. Apparatus. A steel cylinder 15 cm diameter with …

The strength of coarse aggregates or the resistance to crushing of the coarse aggregates under the applied load is generally assessed by conducting aggregate test. …