281.0 = 2.81 = Fineness Modulus 100 Coarse Aggregate Gradation Coarse aggregate shall be limestone, dolomite, gravel or air cooled blast furnace slag and meet the gradation requirements of a No. 8 coarse aggregate or a QA coarse aggregate with a designated gradation from the Certified Aggregate Producer. Also, the coarse aggregate is required to
· Fineness modulus = 283 ÷ 100 = 2.83 . FM is an index of the fineness of an aggregate – the higher the FM, the coarser the aggregate; The FM can be looked upon as a weighted average size of a sieve on which the material is retained, the sieves being counted from the finest.
Do you mean Fineness modulus? The Fineness Modulus (FM) is an empirical figure obtained by adding the total percentage of the sample of an aggregate retained on each of a specified series of sieves, and dividing the sum by 100. Sieves sizes are: 1...
· The fine aggregates can be classified as coarse, medium and fine sands based on the fineness modulus. Fine Sand - Fineness Modulus of 2.2 to 2.6. Medium Sand - Fineness Modulus of 2.67 to 2.9. Coarse Sand - Fineness Modulus of 2.91 to 3.2. According to particle size distribution, IS: 383 -1970 has divided the fine aggregate in to 4 grading zones.
· Higher the fineness modulus value for aggregate coarser is the gradation. Two aggregates with different grading curves usually have different fineness modulus values. However, sometimes they can have the same values due to small changes in aggregate gradation. In such cases, fineness modulus helps to check the consistency of aggregate grading.
· Fineness modulus is generally used to get an idea of how coarse or fine the aggregate is. More fineness modulus value indicates that the aggregate is coarser and small value of fineness modulus indicates that the aggregate is finer. Fineness modulus of different type of sand is as per given below. Type of Sand. Fineness Modulus Range. Fine Sand.
· Fineness Modulus of Fine Aggregate Test Procedure: Following is the test procedure for fineness modulus of sand test, 1) Take the sieves and arrange them in descending order with the largest sieve on top. 2) If a mechanical shaker is using for shaking, then put the sieve set in position on the mechanical shaker and pour the sample in the top ...
The properties of sand, specifically the gradation and fineness modulus of sand, are among the principal factors known to affect the performance of both fresh and hardened concrete [8, 9 ...
An example provided in the ACI 211 standard states that, "For a fine aggregate having a fineness modulus of 2.8 and a 37.5mm nominal maximum size of coarse aggregate, the table indicates that 0.71m3 of coarse aggregate, on a dry-rodded basis, may be used in each cubic meter of concrete. The required dry mass is, therefore, 0.71 x 1600 = 1,136kg."
· Limits of Fineness Modulus Fineness modulus of coarse aggregate varies from 5.5 to 8.0. And for all in aggregates or combined aggregates fineness modulus varies from 3.5 to 6.5. Range of fineness modulus for aggregate of different maximum sized aggregates is given below.
Fineness Total Modulus 100 0 0 0 4 21 46 74 89 95 329 = 3.29 3.29 4 49 91 100 100 100 100 100 100 744 7.44 3 32 59 66 72 81 91 96 98 598 5.98 C 104 4.2 As noted in the standard definition of fineness modulus (para 1.1) and the example shown in para 4.1, the fineness modulus is based on the percentages of aggregates retained on a specificed ...
Question: Q1. Using The Sieve Results Of A Batch Of Sand And Gravel Shown In The Table Below, Calculate The Fineness Modulus For The Sand And Gravel Blend If The P Sand Is 37% And P Gravel Is 63%. (15 Points) Sieve No. % Retained Sieve No. % Retained (Sand) 0 (Gravel) 2.5 0 3/8" No. 4 No. 8 No. 16 No. 30 No. 50 No. 100 No. 200 5 30 34 3.5 14.5 ...
Fineness Modulus of Cement. ... If sand contains >=15% gravel, add "with gravel" after group name. If fines are organic, add "with organic fines" after group name. Fineness Modulus of Coarse Aggregates. The sieve analysis, commonly known as the gradation test. It determines the gradation (the distribution of aggregate particles, by size, within ...
Fineness Modulus of Sand. Fineness modulus of aggregate is an index number which gives an idea about the finance of aggregate and is an approximate proportion of the average size of particle in the aggregate. It is found out by sieve analysis test of standard size in the laboratory. The thumb rule is lower the fineness modulus, particles are ...
· For crushed stone sands and crushed gravel sands, the permissible limit on 150 micron IS sieve is increased to 20%. Fineness modulus of sand should be as per the following table. Type of Sand: Fineness Modulus: Crushed stone sand: Not less than 1.4: Crushed gravel …
Q1. Using the sieve results of a batch of sand and gravel shown in the table below, calculate the fineness modulus for the Sand and Gravel blend if the P sand is 37% and P Gravel is 63% (15 points) Sieve No. % Retained Sieve No. % Retained (Sand) 0 3/8" No. 4 No. 8 No. 16 No. 30 No. 50 No. 100 No. 200 0 3.5 14.5 38 31 11 1.5" 1" 0.75" 0.5" 3/8" No. 4 No.8 No. 16 (Gravel) 2.5 5 30 34 26 1.5 1 2 0
FINENESS MODULUS The fineness modulus is an indicator of the fineness of an aggregate and is most used for evaluating fine aggregates. The higher the number, the coarser the aggregate. The fineness modulus is computed by adding the cumulative …
· The particle size of the stones in the mining industry is usually between 5mm-31.5mm, and the 1-2/1-3 gravel are the general term for the stones and gravel used in the pavement. The specific stone sizes are as follows: 1-2 gravel:crushed stones with a particle size of 10-20mm; 1-3 gravel:gravel with a particle size of 16-31.5mm; Furthermore:
FINENESS MODULUS (FM) - The fineness modulus (FM) is a factor obtained by adding the percentages of material in a sample of aggregate that is retained on each of the following sieves: #100, #50, #30, #16, #8, #4, 3/8", ¾", 1 ½", 3", 6". The result is divided by 100 to arrive at the fineness modulus. For conventional concrete the ...
FINENESS MODULUS OF FINE AGGREGATE TXDOT DESIGNATION: TEX-402-A CONSTRUCTION DIVISION 1 – 2 LAST REVIEWED: SEPTEMBER 2014 Test Procedure for FINENESS MODULUS OF FINE AGGREGATE TxDOT Designation: Tex-402-A Effective Date: August 1999 1. SCOPE 1.1 This method determines the fineness modulus of concrete fine aggregate used in
· Fineness modulus is only a numerical index of fineness, giving some idea about, the mean size of the particles in the entire body of concrete. Determination of fineness modulus is considered as a method of standardization of grading of aggregates i.e. the main object of finding fineness modulus …
The bigger the fineness modulus is, the more coarse the sand is. The fineness modulus of the sand used in ordinary concrete is within 3.7 ~ 1.6.And if M x is within 3.7 ~ 3.1, it is coarse sand; if M x is within 3.0 ~ 2.3, it is medium sand; if M x is within 2.2 ~ 1.6, it is fine sand; and if M x is within 1.5-0.7, it is superfine sand which should be considered specifically when concrete is ...
· Fineness modulus of sand (fine aggregate) is an index number which represents the mean size of the particles in sand. It is calculated by performing sieve analysis with standard sieves. The cumulative percentage retained on each sieve is added and subtracted by 100 gives the value of fineness modulus.
The fineness modulus of samples taken from proposed sources must be a minimum 2.50 and a maximum 3.10 when tested under AASHTO M 6. Fine aggregate from a source with a fineness modulus variation greater than plus or minus 0.20 from the design fineness modulus of the sample may require a concrete mix redesign. Applying the 0.20
To determine the suitability of the tested fine aggregates concrete material, the fine modulus of the fine aggregate is determined. According to table 3, the sum of cumulative percentage of fine aggregates retained is 602.16. Next, the sum is divided by 100 and the fineness modulus is 6.02.
· Ultra Fine Sand: the fineness modulus is 1.5-0.7, and the average particle size is less than 0.25mm. In addition, the following terms may also be frequently heard to measure the quality of sand: Mud Content : the content of natural sand, pebble and gravel with particle size less than 75 μm.
Fineness Modulus is computed by: Adding the cumulative percentages retained on each sieve PAN EXCLUDED and dividing the sum by 100. FINENESS MODULUS (F.M.) To more clearly illustrate typical F.M figures that one usually finds with sand, gravel, or blended (fine and coarse) aggregates we submit the following information. 1.
The fineness modulus (FM) is an index of the fineness of an aggregate. ... Both gravel and crushed stone are generally acceptable for making quality concrete (Photo 9), although gravel is usually preferred for exposed aggregate. The use of recycled concrete, crushed to proper-size concrete aggregate, has also demonstrated successful performance
· The Fineness Modulus is used to describe sand gradations with a single number. This video gives a detailed explanation of how to calculate the Fineness Modu...
The Fineness Modulus (FM) is an empirical figure obtained by adding the total percentage of the sample of an aggregate retained on each of a specified series of sieves, and dividing the sum by 100.Sieves sizes are: 150-μm (No. 100), 300-μm (No. 50), 600-μm (No. 30), 1.18-mm (No. 16), 2.36-mm (No. 8), 4.75-mm (No. 4), 9.5-mm (3/8-in.), 19.0-mm (3/4-in.), 37.5-mm (11/2-in.), and larger ...
Fineness Modulus of Cement : ... If sand contains >=15% gravel, add "with gravel" after group name. If fines are organic, add "with organic fines" after group name. Fineness Modulus of Coarse Aggregates : The sieve analysis, commonly known as the gradation test. It determines the gradation (the distribution of aggregate particles, by size ...
natural gravel. . 2.2 Coarse Aggregate -- Aggregate most of which is retained on 4*75-mm IS Sieve and containing only so much finer material as is permitted for the various types described in this standard. NOTE -Coarse aggregate may be described as: a) uncrushcd gravel or stone which results from natural disintegration of ...
The fineness modulus of aggregate is simply a measurement of the average size of the aggregate. It can be calculated with the help of different sizes of the sieve. Now, let us see some numerical Examples to calculate the fineness modulus of aggregate.
b) As per the grading given in Table 1, the fineness modulus of sand could vary from I.2 to 2.2. However, it is preferable to have minimum fineness modulus of l-4 in case of crushed stone sands and crushed gravel sands and a F. M of 1 5 in case of naturally occurring sands. Hence,
· 2 The fineness modulus of medium sand is 3.0-2.3, and the average particle size is 0.35mm to 0.5mm. 3 The fineness modulus of the fine sand is 2.2-1.6, and the average particle size is 0.25mm to 0.35mm. 4 The fineness modulus of the ultra-fine sand is 1.5-0.7, and the average particle diameter is 0.25 mm or less.
· Fineness modulus of sand (fine aggregate) is an index number which represents the mean size of the particles in sand. It is calculated by performing sieve analysis with standard sieves. The cumulative percentage retained on each sieve is added and subtracted by 100 gives the value of fineness modulus. Fine aggregate means the aggregate which ...