Fineness Modulus of Fine Aggregate: The sand fineness module (fine aggregate) is an index number describing the mean size of sand particles. By doing sieve analysis with normal sieves, it is measured.. The accumulated percentage kept on each sieve is applied and the sum of the fine aggregate is subdivided by 100.. To find the fine aggregate fineness modulus…
Example: 27.00 - (3.35 + 4.18 + 1.76) = 17.71 ft3 total aggregates The percentage of fine to total aggregate is divided by 100 to produce the decimal equivalent, and then multiplied by the total aggregate volume to determine the volume of fine aggregate only. Example: 17.71 ft3 x 0.417 = 7.39 ft3 fine aggregate
From the results of a sieve analysis of fine aggregates given below; (a)Calculate the fineness modulus of this combined aggregate, (writing the formula and the precedence is mandatory for at least two Sieve Size, 1fine & 1coarse aggregate) (b)Draw the grading curve on the chart attached in LMS. (File name is Grading Curve) Table 1.
· Higher the aggregate size higher the Fineness modulus hence fineness modulus of coarse aggregate is higher than fine aggregate. Coarse aggregate means the aggregate which is retained on 4.75mm sieve when it is sieved through 4.75mm. To find fineness modulus of coarse aggregate we need sieve sizes of 80mm, 40mm, 20mm, 10mm, 4.75mm, 2.36mm, 1 ...
· 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 …
Fineness Modulus The fineness modulus is related to gradation. This term is commonly associated with aggregates for portland cement concrete. The purpose is to determine the relative coarseness or fineness of the aggregate grading. The fineness modulus is computed in accordance with AASHTO T …
What is fineness modulus of aggregate? 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. Q.1) Find the fineness modulus of coarse aggregates for ...
The fineness modulus of samples taken from proposed sources must be a minimum 2.50 and a maximum 3.10 when tested in accordance withAASHTO M 6. Fine aggregate from a source with a fineness modulus variation greater than ± 0.20 from the design fineness modulus of the sample may require a concrete mix redesign. Applying the 0.20
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 ...
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."
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Assignment Help: >> Sieve Analysis- Fineness Modulus and Grading - Grading. Grading: The particle size distribution in a given sample of aggregate is termed as grading of the aggregate. The grading of aggregates could be conveniently described along with the help of grading curves. Grading Curve is a curve displaying variation of cumulative ...
· The Importance of Fineness Modulus. In 1925, Duff Abrams introduced the concept of fineness modulus (FM) for estimating the proportions of fine and course aggregates in concrete mixtures. The premise: "aggregate of the same fineness modulus will require the same quantity of water to produce a mix of the same consistnecy and give a concrete of ...
· Sieve Analysis of Fine Aggregate. 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 sieve & then close it with the sieve plate.
4. Example For this procedure 4.1 A typical example of the calculation of the fineness modulus is shown below: Fineness N (100) - Sum Total of Percent Passing Total Percent Retained Modulus 100 Fine Coarse Combined Sieve Sizes, Aggre- Aggre- Course and where U. S. Series gate gate Fine 65:35 N = number of sieves involved in the sum total of ...
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 (FM) The fineness modulus (FM) of either fine or coarse aggregate according to ASTM C 125 is obtained by adding the cumulative percentages by weight retained on each of a specified series of sieves and dividing the sum by 100.
· Fineness modules(F.M.) =685/100 =6.85. Q.2) Find the F.M of coarse aggregate and fine aggregate form the sieve analysis data as given in the table below: Weight of sample = 15 kg. Solution:-Coarse aggregate
Ratio Rule 1: Ratio = Term 1 / Term 2 Term 1 is 300 lbs water and Term 2 is 600 lbs cement W/C = 300/600 = 0.500 Note that the W/C ratio is less than one for concre te. Usually the ratio for concrete should reflect about twice the amount of cement than water. Ratio Rule 2: Term 1 = Term 2 x Ratio Term 2 is 600 lbs cement and W/C is 0.500
· 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 aggregates are essentially any natural sand particles won from the land through the mining process. Fine aggregates consist of natural sand or any crushed stone particles that are ¼" or smaller.This product is often referred to as 1/4''" minus as it refers to the size, or grading, of this particular aggregate.
fine aggregate. It should be clear from the foregoing that the grading of the fine aggregate is far more critical in influencing workability than that of the coarse aggregate because of the larger surface area of the former. If the fine aggregate has an excess of finer particles, with correspondingly large surface area, low workability results.
· Step-4 (Calculating Ratio of Fine Aggregate to Coarse Aggregate) Let " x " is the percentage of fine aggregate to be combined with coarse aggregate. x can be calculated using the formula given below. x = [ (F2-F)/ (F-F1)]*100. Where, F1 = Fineness modulus value of fine aggregate. F2 = Fineness modulus value of coarse aggregate.
Fineness = 9(100) - 302 = 900 - 302 Modulus 100 100 = 5.98 5. Significance and Use A method of selecting mixture proportions for concrete based on the fineness modulus of the combined fine and coarse aggregate was proposed by Abrams in 1918. This method is not widely used today but the concept of being able to describe particle-size ...
According to the fineness modulus (MX), the specifications of machine-made sand can be divided into 4 types: coarse, medium, fine and extra fine: 1. Coarse Sand: the fineness modulus is 3.7-3.1, and the content of particles larger than 0.5mm exceeds 50% of the total weight, and the average particle size is …
From the gradation curve and size distribution, fineness modulus (FM) of IFS aggregate was found to be 7.19. A blend of fine aggregate (70% Qibla Bandi and 30% of Chenab river sand) having fineness modulus of 2.49 and Specific gravity of 2.68 was introduced in concrete mix design (Table1-B). As per ACI 211.4R-93 [30], a mixture of concrete has ...
· Hummel modulus m H is a single factor computed from the sieve analysis describing the whole grading of an aggregate and was developed on the basis of Abrams fineness modulus . All three described moduli were calculated for 60 fine aggregate pit deposits in Pomerania region.
Fineness Modulus: It is basically an Index which defines the coarseness and fineness of the aggregate. It is obtained by adding a cumulative percentage of aggregates retained on each of the standard sieves ranging from 80 mm to 150 microns. (rm{R=frac{p_2-p}{p-p_1}times 100}) where, R = Proportion of fine aggregate to the combined ...
Example Calculation of FM of Fine Aggregate Order by Phone: 800.444.1508 / 740.548.7298 • Order Online: Test Sieve Sieve Opening Mass …
SIEVE ANALYSIS AND FINENESS MODULUS Sampling Since the reason for sampling aggregates is to determine the gradation (particle size) of the aggregate, it is necessary that they be sampled correctly. The results of testing will re" ect the condition and characteristics of the aggregate …
Fineness Modulus of grading of aggregate. Fineness modulus is an empirical factor computed from the sieve analysis. It is defined as the sum of the cumulative percentages retained on the sieves of the standard series ranging from 80mm to 150microns and dividing the sum by 100. When all particles in a sample are coarser then say 600µm, the ...
The fineness modulus is computed from screen analysis data by adding the cumulative percentages of aggregate retained on each of a specified series of sieves, and dividing the sum by 100. The sieves used for determining the fineness modulus are: No. 100 (150 µm), No. 50 (300 µm), No. 30 (600 µm), No. 16 (1.18 mm), No. 8 (2.36 mm), No. 4 (4 ...
Fineness Modulus of Fine Aggregate Fine aggregate (sand) grading affects consistence and finishability. Fineness Modulus (FM) is an empirical calculation used to support the optimisation of a concrete mix design. It is used to determine ''degree of uniformity of the grading''. This can create a relationship between grading and consistence and ...
· The ASTM limits of gradation and standard value of fineness modulus for sand to be used as fine aggregate in concreting works were being followed for the optimization program. It was evident from the results that S-6 and S-8 satisfy the ASTM standards so the remaining six sands were considered for optimization process. 5.1.