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 ...

The Flakiness index of aggregates is the percentage by weight of particles whose least dimension (thickness) is less than three- fifths (0.6times) of their mean dimension. This test is not applicable to sizes smaller than 6.3mm. The Elongation index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is ...

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 …

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).

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:- …

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: …

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 …

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 …

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 ...

In addition to the aggregate grading, the particle shape is of importancefla. The usual shapes of the particles are; Rounded (river gravel) improves the workability of concrete due to the less ...

Higher void content indicates greater angularity and roughness of the particles. Good angularity and texture of fine aggregate particles increase the strength of paving mixtures. Rounded aggregate can result in pavements prone to rutting and shoving under traffic loads. If the aggregate is too rounded, the shear strength of the matrix is reduced.

The Flakiness index of aggregates is the percentage by weight of particles whose least dimension (thickness) is less than three- fifths (0.6times) of their mean dimension. This test is not applicable to sizes smaller than …

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.

The Flakiness Index of aggregate is the percentage by weight of aggregate particles whose least dimension is less than 0.6 of their mean dimensions. This test is applicable to aggregates having a …

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 …

Reading time: 3 minutes. Shape tests on coarse aggregates such as flakiness index and elongation Index, its importance in concrete construction, methods …

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 …

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

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 is applicable to aggregates having size larger than 6.3mm. To calculate the flakiness index of the given sample of aggregates, the weight of each fraction of aggregates passing and retaining on the specified set …

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 …

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.

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 ...

The aggregate passing 12.5 mm sieve and retained on 10 mm IS sieve is selected for standard test. The aggregate should be surface dry condition before testing. The aggregate may be dried by heating at a temperature 1000C to 1100C for a period of 4 hours and is tested after being cooled to room temperature

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 ...

Objective. Particle shape and surface texture influence the properties of freshly mixed concrete more than the properties of hardened concrete. Rough-textured, angular, and …

The strength of coarse aggregates or the resistance to crushing of the coarse aggregates under the applied load is generally assessed by conducting aggregate ... 3.3.1.5 Flakiness & Elongation index Test of aggregate The flakiness index of aggregates is the percentage by weight of particles whose least dimension is less than (0.6) ...

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. …

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).