
Fineness Modulus Method of Concrete Mix Design The index number, which describes the relative sizes of coarse and fine aggregates, is called as fineness modulus (FM). Fineness modulus is determined separately by sieving coarse and fine aggregates through the following set of sieve.
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Maximum aggregate size - the largest sieve size that allows all the aggregates to pass Nominal maximum aggregate size - the first sieve to retain some aggregate, generally less than 10% Materials of Construction-Aggregates 17 Coarse 15-25 mm Coarse 5-15 mm Fine 0-4 mm Filler <0.063 µm Materials of Construction-Aggregates 18
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Table 1—Minimum Size of Samples Nominal Maximum Aggregate Size1 Minimum Weight of Field Sample, g (lb.) Minimum Weight of Sample for Test, g (lb.) Fine Aggregate No. 8 (2.36 mm) 4,500 (10) 500 (1.1) No. 4 (4.75 mm) 4,500 (10) 500 (1.1) Coarse Aggregate
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* Fineness Modulus—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. Sieve sizes applicable are: 3/8, 4, 8, 16, 30, 50, and 100.
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Proportioning using the fineness modulus method By Neal Jablonski Using the sieve analysis result below, the fineness modulus can be cal-culated. The fineness modulus is the sum of the total percentage retained on each of a specified series of sieves divided by 100. A sample of fine aggregate weighing 508.5 grams is passed over the
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Fine Aggregate: Basalt stone crushed sand is used as fine aggregate. The sand particles should also pack to give minimum void ratio, higher voids content leads to requirement of more mixing water. In the present study the sand conforms to zone II as Per the Indian standards [9]. The specific gravity of sand is 2.64and fineness modulus is 3.35.
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Limestone Stone Crusher. Feeding Size: 65-300mm Discharging Size: 3-60mm View Details Send Enquiry Basalt/Diabase Stone Crusher ... Sands having a fineness modulus between 2.4 and 3.0 are generally satisfactory provided that the percentage passing the 300 and 150 micron sieves meet the previously stated requirements. Zone II sand as per IS: 383 ...
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Mar 01, 2021· An open circuit is defined as an electric circuit in which current does not flow. Current can only flow in a circuit if it finds a continuous path—known as a "closed circuit". If there's a break anywhere in the circuit, you have an open circuit, and current can not flow. In an open circuit, the two terminals are disconnected.
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Fines modulus is actually a number that defines gradation of aggregates, by increasing fines modulus mean coarser gradation and with the decrease in fines modulus means finer gradation. Using smaller number of fines modulus, particles surface area is small and hence requires more amount of mixing water, which will lead to increment in voids due ...
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Locally available river sand have density 1710 kg/m3 is used and specific gravity is 2.65 and finance of modulus of river sand is 5.24. m /crush sand used as partial replacement of fine sand in construction line and the density of M /crush sand is 1750 kg/m3, specific gravity and fineness of modulus is found to be 2.73 and 4.66 respectively.
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To find fineness modulus of coarse aggregate we need sieve sizes of 80mm, 40mm, 20mm, 10mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm and 0.15mm. Fineness modulus is the number at which the average ...
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Mixed aggregate is sand, gravel, crushed stone, and recycled concrete. ... Fineness modulus is a number obtained by adding the values of the percentages coarser thaneach full sieve in the set and dividing the sum by 100. In a sieve analysis using sieves No. 100, No. 50, No. 30, No. 16, No. 8, and No. 4, the finenessmodulus is found to be equal ...
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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. ... Determine the volume of cement, sand and stone chips of 10 cft of cement concrete mix with ratio is 1:1.5:3. Solution: 3. A rectangular channel ...
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How does the Concrete mixing plant works. Concrete mixing plant is divided into four parts: gravel feed, powder (cement, fly ash, bulking agents, etc.) to feed, water and feed additives, transmission and storage stirred their workflow shown in Figure 1., the mixer control system power, into the human - machine dialogue operation interface, system initialization process, including recipe ...
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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 are the types of gradation? Gradation Types (see Graph) Dense or well-graded.
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Key Features: If the volume is unit then, Bulk Density= Mass. Unit in kg/m 3 or lb/ft 3. In this definition, the volume is that contains both the aggregates and the voids between aggregates particles. The approximate bulk density of aggregate that is commonly used in normal-weight concrete is between 1200-1750 kg/m3 (75-110 lb/ft3) .
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This specification defines the requirements for grading and quality of fine and coarse aggregate for use in concrete. Fine aggregate shall consist of natural sand, manufactured sand, or a combination thereof. Fine aggregate shall be free of injurious amou
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Fine sand: its fineness modulus is 2.2—1.6, the average particle size is 0.35—0.25 mm. Super-fine sand: its fineness modulus is 1.50.7, the average particle size is below 0.25 mm. LZZG is a professional manufacturer of all kinds of stone and sand processing equipment. We provide various sizes of sand production line and stone production ...
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Fineness modules. Fineness modulus is an empirical factor obtained by the sum of the total percentages of a sample of the aggregate retained on each of the specified series of sieves per 100. ... Types of Stone Masonry: Ashlar Masonry, Rubble Masonry November 26, 2019;
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The values of fineness modulus more than this value make the concrete harsh, while a lesser value leads to an uneconomical mix. The relation gives the proportion of the amount of fine aggregate (W) to be mixed with one part of the coarse aggregate. W = (Pc - Pm ) / (Pm - P f) Where Pc = Fineness modulus of coarse aggregate
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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. Concrete Technology Fineness Modulus of Coarse Aggregates 30 related questions found
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Fineness Modulus of Cement and Aggregates - IIT Bombay. Calculate the fineness value from the given observation and for formula click on FORMULA, enter the value and then click on GET Values Enter the values of D 10, D 30 and D 60. from the graph (hower mouse pointer over the points to see the value).
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Fineness modulus is an empirical figure that is determined in the laboratory to express the total percentage of the sample of cement retained on a 90 micro meter size sieves divided by 100 as averaged. Significance The fineness of cement indirectly impacts the rate of hydration and thus heat of hydration.
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Fineness Modulus of 10 mm Aggregate 6.9 Fineness Modulus of 20 mm Aggregate 7.7 Water Absorption 0.8 150 X 150 mm were casted during this investigation. Specific Gravity 2.6 curing Fig. 2. Particle Size Distribution of Coarse Aggregate D. Stone dust - Grey col our stone dust was collected from local stone crushing units of Bharatpur, Rewa road ...
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What is the fineness of cement? The fineness of cement is a measure of the size of particles of cement and is expressed in terms of the specific surface area of cement. The fineness of cement is measured as the % weight retained on a 90µm IS sieve over the total weight of the sample.
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4 4. Fine Aggregates Weigh the material retained on each sieve size to the nearest 0.1 g. Ensure that all material entrapped within the openings of the sieve are cleaned out and included
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Suppachai Sinthaworn. This article presents the consideration of relation between compressive strength and rebound number of concrete cooperating with quarry dust as fine aggregate (natural river ...
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If you have high modulus of fineness, the tendency of mixture is to have less pores as possible. ... So, a river sand (natural sand) will be in the range of2.5 or so to 2.7 and P-gravel (P-stone ...
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FINENESS MODULUS OF SAND - CIVIL ACADEMIC. FINENESS MODULUS OF SAND. Fineness modulus of sand is defined as the cumulative amounts of aggregate that remained on each of the sieve sizes ranging from 75 mm to 150 microns are added together and divided by 100. The fineness modulus is commonly used to determine the coarseness or fineness of an ...
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when the fineness modulus of sand is 1.26 instead of 3.87 which are almost extreme values maintaining the grading of sand within the permissible limits of IS : 383-1970;. Similarly, the consumption of materials is more to an extent of 2.5 percent when the coarse aggregate with fineness modulus 6.05
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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 evaluation of natural and manufactured sands for portland cement concrete. 1.2 The values given in parentheses (if provided) are not standard and may not be exact
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Fineness Modulus of grading of aggregate The 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.
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3.1.2—Fineness modulus 3.1.3—Maximum size and nominal maximum size 3.1.4—Significance of aggregate grading 3.1.5—Permissible variations in grading ... material such as sand, gravel, crushed stone, blast-furnace slag, and lightweight aggregates that usually occupies approxi-mately 60 to 75% of the volume of concrete. Aggregate
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Fine aggregates which pass through ASTM sieve No.4, or having a size less than 4.75mm but not less than 0.07mm. Aggregates between 0.06mm and 0.002mm is classified as silt and particles smaller are called clay. TYPES OF COARSE AGGREGATES • Gravels: Smooth surface natural stones. Source is the rivers in hilly areas.
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Coarse aggregate: 2 in. maximum size, crushed gravel (angular) Bulk oven-dry specific gravity = 2.573, Absorption = 0.1% Oven-dry rodded density = 120 pcf Moisture content = 1% Fine aggregate: Natural sand Bulk oven-thy specific gravity = 2.54, Absorption = 0.2% Moisture content = 3.67% Fineness modulus = 2.68
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② The water content of the finished product sand is high, which must be dehydrated. If dry mix-use, it must drying again. ③ The fineness modulus of artificial sand is coarser and the sand yield is lower. ④ Producing a lot of sludge powder sewage, which polluted the environment. And the stone powder is not easy to recover.
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These properties include shape and texture, size gradation, moisture conten t, specific gravity, reactivity, soundness and bulk unit weight. These properties along with the water/cementitious material ratio determine the strength, workability, and durability of concrete. The shape and texture of aggregate affects the properties of fresh ...
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Civil At Work Fineness Modulus. Aug 19, 2017 0183 32 In 1925, Duff Abrams introduced the concept of fineness modulus FM for estimating the proportions of fine and coarse aggregates in concrete mixtur The principle Aggregate of the same fineness modulus will require the same quantity of water to produce a mix of the same consistency and give a concrete of the same strength...
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Pumpability of concrete is generally improved with a decrease in the fineness modulus. Fine aggregates having a fineness modulus between 2.40 and 3.00 are generally satisfactory provided that the percentages passing the 300- and 150-μm (No. 50 and No. 100) sieves meet the previously stated guidelines. Fineness modulus values alone without ...
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