To find the fineness modulus of fine aggregate we need sieve sizes of 4.75mm 2.36mm 1.18mm 0.6mm 0.3mm and 0.15mm. Fineness modulus of finer aggregate is lower than fineness modulus of coarse aggregate. Determination of Fineness Modulus of Sand To determine the fineness modulus we need standard sieves mechanical sieve shaker optional .
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To find the fineness modulus of fine aggregate we need sieve sizes of 4.75mm 2.36mm 1.18mm 0.6mm 0.3mm and 0.15mm. Fineness modulus of finer aggregate is lower than fineness modulus of coarse aggregate. Determination of Fineness Modulus of Sand To determine the fineness modulus we need standard sieves mechanical sieve shaker optional .
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.
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.
SB3 sand FM3.1 and SG5 sand FM2.2 were mixed to vary the fineness modulus from 2.2 to 3 and the compressive strengths of each corresponding mortar specimen determined after 28 days. The compressive strength of the mortar issued from the mixed sands is observed to be greater than that issued from the natural sand of the same fineness modulus.
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
Concreting works require coarse sand with a modulus of 2.5 to 3.5 and the slit content must not be less than 4 percent. . Fineness modules. Fineness modulus is an empirical factor obtained by the sum of the total percentages of a sample of the aggregate retained
Fine aggregate having fineness modulus more than 3.2 should not considered as fine aggregate. Various values of fineness modulus for different sands are detailed below. Type of sand Fineness modulus range Fine sand 2.2 2.6 Medium sand 2.6 2.9 Coarse sand 2.9 3.2
It is obtained when Fineness Modulus is about 2.7. The net cost of Concrete reduces when FM of sand increases. It reduces by about 6.5 for an increase of FM from 2.0 to 3.0. As the fineness modulus of Sand increases the CostBenefit Ratio reduce by a very large factor. This
1. Fineness Modulus. It is one of the factors that influence concrete mix design since it controls the proportion of sand in concrete mixture. The overall fineness of sand is given by factor called fineness modulus and it is found by sieve analysis based on ASTM C 33 M33 specifications or any other applicable standards.
Oct 26 2016 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.
Type of sand Fineness modulus range Fine sand 2.2 2.6 Medium sand 2.6 2.9 Coarse sand 2.9 3.2 Fineness modulus limits for various zones of sand according to IS 383-Sieve size Zone-1 Zone-2 Z 10mm 100 100 1 4.75mm 90-100 90-100 9 rd Get Noti cations
The sand frequencies are normal log distributed. The fineness modulus is a logarithmic function of the geometric mean of the particle size. The dispersion index is a logarithmic function of the geometric dispersion. An analysis of variance of the fineness modulus and the dispersion index has been made to establish a sampling experiment.
Fine Aggregate and Fineness Modulus. Posted 2016-10-14 In civil engineering aggregates with a particle size greater than 5 mm are coarse aggregates also known as stone aggregates with a particle size of less than 5 mm are fine aggregates also known as sand.Qualified fine aggregate should have a good gradation including fineness modulus firmness mud content sand equivalent etc.
For aggregates used in PCC another common gradation description for fine aggregate is the fineness modulus. It is described in ASTM C 125 and is a single number used to describe a gradation curve. It is defined as The larger the fineness modulus the more coarse the aggregate.
calculation of fineness modulus enter values of z amp press calculate actual program is available in super civil cd. is sieve size passing of sand z pure sand x 100 - x 4.75 mm 2.36 mm 1.18 mm 600 microns 300 microns 150 microns
Fine aggregate shall consists of natural sand crushed stone sand crushed sand Fine Medium Coarse Beach or river shingle Broken stone to determine the fineness modulusthe effective size and uniformly coefficent . More detailed
To find the fineness modulus of fine aggregate we need sieve sizes of 4.75mm 2.36mm 1.18mm 0.6mm 0.3mm and 0.15mm. Fineness modulus of finer aggregate is lower than fineness modulus of coarse aggregate. SAND Sample preparation Take a sample of fine aggregate in pan and placed it in dry oven at a temperature of
highest values of fineness modulus are used instead of those with lowest values of fineness modulus. 2.2.2 In Table 2 the fineness modulii of fine aggregate has been taken as 1.26 fine sand for leaner mixes and 2.87 coarse sand for richer mixes for computing the constants.
Fineness modulus of crusher dust goldhead sand fineness modulus crusher and grinding mill info in crusherb2b part contact supplier 14 aggregates aggregate is a collective term for the mineral materials such as sand aggregate is fineness modulus is defined as the sum of the cumulative percentages retained chat with sales read more. View More