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 …

Fineness modulus estimates the proportions of aggregate in construction materials. Aggregate is inert granular material such as sand, gravel or crushed stone used to form concrete. The fineness modulus number affects the workability and finish of concrete. Before calculating fineness modulus, lab technicians pour aggregate onto sieves. Fineness ...

Aug 14, 2019· 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 l...

Mar 07, 2016· Fineness modulus gives the idea about how course or fine the sand is. Lower FM indicates fine sand and higher FM indicates courser sand.Fine sand requires more cement paste due to high surface area and tendency to develop crack.

The sampling and test methods shall be done with grading and fineness modulus test, organic impurities test, effect of organic impurities on strength test, soundness test, clay lumps and friable particles test, coal and lignite test, bulk density of slag test, abrasion of coarse aggregate test, reactive aggregate test, freezing and thawing test ...

Sometime it may happen that, the aggregate available at site is not conforming to the desired grading. In such case two or more aggregates from different sources may be combined to get the required grading. Fineness modulus value can be used as a technical way to blend coarse aggregate with fine aggregate to produce desired […]

Fineness A measure of the purity of a precious metal as a unit of 1,000. That is, a fineness measure of 1 means that 0.1% of a substance is a given precious metal, while a measure of 1,000 means that is the metal. Fineness is important to commodities and futures involving precious metals, in which the quality of the underlying metals must be ...

All used foundry sand samples showed lower unit weight, lower fineness modulus, higher water absorption, lower specific gravity, and higher loss on wetting and drying in sodium sulfate solution than the respective properties of traditional concrete sand.

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.

Aggregates for Concrete bination of gravels or crushed stone with particles predominantly larger than 5 mm (0.2 in.) and generally between 9.5 mm and 37.5 mm (3⁄ 8 in. and 11⁄ 2 in.). Some natural aggregate deposits, called pit-run gravel, consist of gravel and sand that can be readily used in concrete after minimal processing. Natural ...

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 ...

Definition of fineness in the Legal Dictionary - by Free online English dictionary and encyclopedia. ... Related to fineness: Fineness modulus, Fineness ratio. See: quality, sensibility. ... The study investigates the influence of molding media characteristics such as sand fineness, material type and refractory coating selection.

The application of fineness modulus and particle size distribution of aggregate is to fine the aggregate is coarse or fine wheather it can be used in making mortar or concrete. If not what corrective action as to be taken is decided upon. Then the particles distribution study given an idea as to weather the material well grade or not.

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. It is calculated by performing sieve analysis with standard sieves.

Fineness of fine aggregate is related to term fineness modulus; most commonly sand. Fineness modulus is a measure to define fineness of aggregate precisely it defines coarseness or fineness of aggregate to be used in concrete. This can be defined as value that is derived by following expression:

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 ...

As fineness modulus of sand changes from 2.0 to 2.5 there is an increase in compressive strength from 43.07 to 49.00 MPa. i.e. strength increases by 14%. On the other hand by increasing Fineness Modulus from 2.5 to 3, Compressive strength increases from 49.00 to …

Definition of fineness modulus. i. A means of evaluating sand and gravel deposits, consisting of passing samples through standardized sets of sieves, accumulating percentages retained, dividing by 100, and comparing the resultant fineness-modulus number to various specification requirements.

Sep 01, 2014· Fineness Modulus of Sand Why to Determine Fineness Modulus? 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 …

Jan 13, 2018· Many a time, fine aggregates are designated as coarse sand, medium sand and fine sand. These classifications do not give any precise meaning. What the supplier terms as fine sand may be really medium or even coarse sand. To avoid this ambiguity fineness modulus could be used as a yard stick to indicate the fineness of sand.

Definition 4.2 As noted in the standard definition of 1.1 The standard definition of fineness fineness modulus (para 1.1) and the example modulus is as follows: shown in para 4.1, the fineness modulus is based "An empirical factor obtained by adding on the percentages of aggregates retained on a the total percentages of a sample of the ...

Sand from the local river (Cauvery) was used as fine aggregate with the fineness modulus of 2. Studies on the chloride permeability of fly ash and silica fume based ternary blended concrete The size fractions and the fineness modulus of the sand and the coarse aggregate used were also measured.

Fine sand: fineness modulus of 2.2–1.6, with an average particle diameter 0 35–0 25 mm; Special fine sand: fineness modulus of 1.5–0.7, with an average particle diameter of 0.25 mm or less. The larger the fineness modulus is, the coarser the sand will be. The appropriate range of fineness modulus of the sand aggregate used in normal ...

METHOD OF CALCULATION OF THE FINENESS MODULUS OF AGGREGATE 1. Definition 1.1 The standard definition of fineness modulus is as follows: "An empirical factor obtained by adding the total percentages of a sample of the aggregate retained on each of a specified series of sieves, and dividing the sum by 100." Note.-

Define fineness. fineness synonyms, fineness pronunciation, fineness translation, English dictionary definition of fineness. state of being fine; superior quality; proportion of pure precious metal in an alloy: The fineness of the diamond was extraordinary.

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