What is the physical interpretation of fineness modulus?

The fineness modulus is one of the physical properties of fine aggregates (sand). The Fineness Modulus (FM) of fine aggregates (sand) is an empirical figure obtained by adding the total percentage of the sample of a sand retained on each of a specified series of sieves and dividing the sum by 100.

What is the purpose of measuring the fineness modulus?

Fineness modulus offers a way to quantify the average size of the aggregate particles in the concrete mix. The size of the particles, in turn, will greatly affect how easily the concrete pours and spreads, as well as its strength and durability once cured.

What is the meaning of fineness modulus of aggregate value 7?

Fineness modulus of 7.17 means, the average size of particle of given coarse aggregate sample is in between 7th and 8th sieves, that is between 10mm to 20mm.

What does FM stand for in concrete?

The fineness modulus (FM) is an index of the fineness of an aggregate. The FM is calculated by adding the cumulative percentages by mass retained on each of a specified series of sieves and dividing the sum by 100 (see Table 1). The FM for fine aggregate should fall within the range of 2.3 to 3.1.

What is the fineness modulus of fine sand?

Fine sand has fineness modulus between 2.2-2.6.

What is the fineness modulus value of a fine sand?

Range of Fineness of Modulus

Types of Sand	Fineness Modulus (F. M) Value
Fine Sand	2.6 – 2.6
Medium Sand	2.6 -2.9
Coarse Sand	2.9 -3.2

What is fineness modulus formula?

The Fineness Modulus is an index number that indicates the mean size of the sand particle. It is calculated by the sieve analysis test with standard IS sieves. The fineness modulus of sand ranges from 2.2 to 3.2. The formula for its calculation is, Fineness modulus of Sand = (Cumulative \% retained) / 100.

How do you solve fineness modulus?

After sieving, record the sample weights retained on each sieve. Then find the cumulative weight retained. Finally determine the cumulative percentage retained on each sieves. Add the all cumulative percentage values and divide with 100 then we will get the value of fineness modulus.

What is the meaning of fineness?

fineness. / (ˈfaɪnnɪs) / noun. the state or quality of being fine. a measurement of the purity of precious metal, expressed as the number of parts per thousand that is precious metal.

What is fineness modulus in concrete?

The significance of fineness modulus (FM) is in specifying the proportions of fine and coarse aggregates when designing concrete mixes. The higher the value of FM, the coarser the aggregate. Generally, a lower FM results in more paste, making the concrete easier to finish.

What is a fineness modulus of sand?

What Is Fineness Modulus of Sand? The Fineness Modulus of Sand is an index number that indicates the mean size of the sand particles. It is calculated by performing the sieve analysis test with standard IS sieves. The fineness modulus of sand ranges from 2.2 to 3.2.

What is fineness modulus of coarse sand?

Fineness modulus of fine aggregate varies from 2.0 to 3.5mm. Fine aggregate having fineness modulus more than 3.2 should not considered as fine aggregate….Values of Fineness Modulus of Sand.

Type of sand	Fineness modulus range
Fine sand	2.2 – 2.6
Medium sand	2.6 – 2.9
Coarse sand	2.9 – 3.2

What is the Fineness modulus (FM)?

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.

What is the Fineness modulus of sand (fine aggregate)?

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…

What are the values of fineness modulus after sieve analysis?

Values after sieve analysis are Therefore, fineness modulus of coarse aggregates = sum (cumulative \% retained) / 100 = (717/100) = 7.17 Fineness modulus of 7.17 means, the average size of particle of given coarse aggregate sample is in between 7th and 8th sieves, that is between 9.5mm to 19mm. Limits of Fineness Modulus for Coarse Aggregates

What is the Fineness modulus of copper slag?

Fineness modulus of copper slag The grain gradation and coarseness of sand are determined by screen residue analysis. Grading region and fineness modulus can be used to express the gradation and the coarseness of sand particles respectively.