Grading, fineness modulus and plasticity index shall be tested to meet the requirements prescribed. The fineness of the sand plays an important role in the finishability of the concrete mix, and even small changes in fineness can affect finishing. Fineness modulus is a tool in concrete mix design process for evaluating aggregates and determining mean particle size of the aggregate sample. Follow the steps shown below to blend aggregate using fineness modulus value. To find fineness modulus we need to perform sieve analysis and for that.
Excel sheet for sieve analysis of aggregate and to. In this article through grinding colorless waste glasses respectively 1,2,3,4,5,6,7,8,10,20,30 min, then calculate the fineness modulus and fractal dimension of waste glass powder, it is concluded that with the extension of grinding time the fineness modulus of the waste glass powder show the trend of decreasing first then increasing and decreasing again in last,and it is mainly decided by the. Sieve analysis aggregate gradation sieve analysis is the distribution of particle sizes expressed as a percent of the total dry weight. At about 35% relative density dr, the sand was used to represent a loose soil formation with prototype depth of 30 m. The larger the fineness modulus, the more coarse the aggregate. It should be noted that the fineness modulus of standard sand was around 2. Pdf for sieve analysis to determine the fineness modulus of sand. Stiffness of sands through a laboratory test database. The particle shape is cubical, which is almost closer to rounded river sand. Maximum nominal size, ssd specific gravity and 24 h water absorption of used. In this video, we will see how to do the sieve analysis and find out the fineness modulus of sand. Crdc10480 method of calculation of the fineness modulus. For any type of mix proportioning sieve analysis results and fineness modulus is required. The larger the fineness modulus is, the coarser the sand will be.
Fineness modulus of sand free download as powerpoint presentation. The following proportions are usually maintained in cement. The cumulative percentage retained on each sieve is added and subdivided by 100 gives the value of fine aggregate. Fineness modulus is generally used to get an idea of how coarse or fine the aggregate is. It is informational only and not an official part of the standard.
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. What is fineness modulus of coarse aggregates and its calculation. Excel sheet for sieve analysis of aggregate and to calculate fineness modulus. Fineness modulus of sand rangeder weinlieferant 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 get price fineness modulus of fine sand pdf india get price. The importance of fineness modulus concrete construction. It is found out by sieve analysis test of standard size in the laboratory. The appropriate range of fineness modulus of the sand aggregate used in normal concrete is 3.
Fineness test of cement and its significance tests on cement. Fineness modulus of coarse aggregate of size 20mm is 7. For this purpose, more than 2100 bender elements tests were carried out on 188 saturated samples of sand mixed with di erent nes types and content. Can changes in fine aggregate affect concrete finishability. The value for tine aggregates commonly ranges from 2.
For every 5% increase in fm of sand, admixture dosage reduced by 0. Fineness modulus of sand fine aggregate is an index number which represents the mean size of the particles in sand. The result is divided by 100 to arrive at the fineness modulus. The relationship between dry rock bulk modulus and porosity. Shear modulus and damping ratio of grouted sand sciencedirect. The number or sizes of sieves used in the nest depends on the type of soil and the distribution of the particle sizes. The mongolian concrete conference is the major concrete conference in mongolia.
The sand soil used was well graded al white silica sand, medium angular with particle sizes in the range of 0. Susceptibility of jhelum river bed aggregate to alkali silica reaction and its potential as construction aggregate. Pdf experimental study on impact on fineness of sand and. Silica sand from any one source, having a variation in fineness modulus greater. As we know that the fineness modulus is a measurement of the coarseness or fineness of a given aggregate, higher the fm the coarser the aggregate. The fineness modulus is computed by adding the cumulative percentages retained on the 6. Two kinds of coarse aggregates stiff and soft and three kinds of fine aggregates fm3. The shear modulus and damping ratio of a pure sand and of a sand grouted with three different grouts were determined using resonant column tests and cyclic triaxial tests. Fineness modulus is defined as the sum of the cumulative percentages retained on specified sieves. A sieve analysis or gradation test is a practice or procedure used commonly used in civil engineering to assess the particle size distribution also called gradation of a granular material. Before calculating fm, lab technicians perform a sieve analysis to determine the particle size distribution, or grading, of the aggregate sample. Crdc10480 method of calculation of the fineness modulus of. The fineness modulus fm is an empirical figure obtained by adding the total percentage of. Dec 09, 2017 in this video, we will see how to do the sieve analysis and find out the fineness modulus of sand.
Gradation is determined by passing the material through a series of sieves stacked with progressively smaller openings from top to bottom and weighing the material retained on each sieve. A laboratory investigation for shear modulus of silty sand. On the other hand by increasing fineness modulus from 2. Optimization of gradation and fineness modulus of naturally. The fineness modulus values obtained for sand, quarry dust and coarse aggregate are given in tables 3. The green sand sample is fired at 1800f 982c until it reaches a constant weight. Smallstrain shear modulus and shear strength of an.
Introduction dynamic shear modulus gives information about dynamic soil response and deformability characteristics. For aggregates used in pcc, another common gradation description for fine aggregate is the fineness modulus. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including, effect of fineness modulus of sand on concrete, quarry, aggregate, and different kinds of minerals. Apr 10, 2018 fineness modulus of sand and sieve analysis of sand how to decide zone of sand fine aggregate. Excelsheetforsieveanalysisofaggregateandtocalculate. Fineness modulus of sand is an index arrived based on the particle size analysis and then dividing the sum of the cumulative percentage of particles retained on the sieves by 100. The effect of using low fines content sand on the fresh. Method of calculation of the fineness modulus of aggregate pdf. Hope it will consume less time in case of repetitive calculations. Fineness modulus of coarse aggregates and its calculation. Determination of fineness modulus of sand to determine the fineness modulus, we need standard sieves, mechanical sieve shaker optional. Excavation for foundation in earth, soils of all types, sand, gravel, soft murum including shoring and strutting, dewatering as necessary and disposing off excavated stuff as directed etc.
The fineness modulus is a single parameter that describes the grading curve and can be useful in checking the uniformity of grading. Fineness modulus of fine aggregate txdot designation. What is fineness modulus of sand fine aggregate and. Strength, modulus and cbr values for artificially cemented sand.
Analysis of feed particle fineness 936 determination of modulus of uniformity a screen mesh b % of material on each screen c totals of column b d e figs. Luke snell was instrumental in starting this conference in 2002 and has contributed. Poissons ratio, strength characteristics friction angle, cohesion, com. Physical properties of coarse aggregate of size 20mm s. Self compacting concrete scc is one of the innovative construction material based on the performance in both fresh and hardened state. Abstract the effects of various fineness moduli fm of fine aggregate on the engineering properties of high. The research on the fineness modulus and fractal dimension of. The weight cement particle whose size greater than 90 microns is determined and the percentage of retained cement particle are calculated. May 10, 20 thus the object in this paper is to find the best fineness modulus of sand to get. Optimization of gradation and fineness modulus of naturally fine sands for improved performance as fine aggregate in concrete conference paper pdf available in procedia engineering 145 may. A blend of fine aggregate 70% qibla bandi and 30% of chenab river sand having fineness modulus of 2.
In uence of nes content and type on the smallstrain shear. Step by step guide for blending aggregates using fineness modulus value step1 calculate fineness modulus of fine aggregate. The fineness modulus fm is an empirical figure obtained by adding the total percentage of the sample of an aggregate retained on each. Effect of fineness modulus of manufactured sand on. Afs sand casting conference october 2022, 2014 indianapolis, in usa significance of total combustibles loi loss on ignition loi determines the total amount of combustible material in the green sand. As fine aggregate comprises up to 30% of the total volume of concrete, consequently gradation and fineness modulus of sand are among principal factors. Due to over consumption of natural river sand deposits creating several environmental issues, as an alternate. So, in the calculation of coarse aggregate we need all sizes of sieves. 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. In general, however, a smaller value indicates a finer aggregate. Determination of fineness modulus of coarse aggregates. Another issue associated with river sand is that of obtaining required grading with a fineness modulus fm of 2.
Fineness modulus is a single factor computed from the sieve analysis and is defined as the sum of the cumulative percentages retained. Effect of fineness of sand on the cost and properties of. Experimental study on impact on fineness of sand and m sand in m20 grade of concrete article pdf available in materials today. Fineness modulus value can be used as a technical way to blend coarse aggregate with fine aggregate to produce desired grading. Effect of fineness of sand on the cost and properties of concrete. 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. Astm d1073 16 standard specification for fine aggregate for. A typical fineness modulus for fine aggregate used in pcc is between 2.
May, 20 binq mining mining equipment pdf for sieve. Effect of fineness of sand on density of concrete after measuring the slump, several 150 mm cubes were filled. It is described in astm c 125 and is a single number used to describe a gradation curve. This method determines the fineness modulus of concrete fine aggregate used in evaluation of natural and manufactured sands for portland cement concrete. The above table is showing us that the laurence pure sand is coarser then chenab sand and similarly sargodha crush is. Chapter 2 sieve analysis and fineness modulus sampling. Fineness modulus is a term used as an index to the fineness or coarseness of sand. To find fineness modulus of coarse aggregate we need sieve sizes of 80mm, 40mm, 20mm, 10mm, 4. Papers at this conference are published in either mongolian or english. Snell and bryan castles 1 this paper was published in the proceedings of the 10th annual mongolian concrete conference. The quantity of gas forming materials in the green. Dnanc onur 1 mustafa tuncan 2 and ahmet tuncan 3 abstract this study presents an experimental laboratory investigation about the shear modulus of reconstituted toyoura sand samples by using resonant column test device. Effect of fineness modulus of sand on concrete products.
Fineness modulus of sand why to determine fineness modulus. This abstract is a brief summary of the referenced standard. Jul 05, 20 the fineness of sand affects the cost and properties of concrete. Standard specification for fine aggregate for asphalt. Specifications for coarse and fine aggregates from natural sources for concrete. The fineness test of cement is done by sieving cement sample through standard is sieve. It is an empirical number relating to the fineness of the aggregate. Improvement to chaurakund chopan bhutrum hatru roa tender. What is fineness modulus of sand fine aggregate and calculation. Design manual engineering properties of soil and rock. Fineness modulus list the fineness modulus of the fine aggregate. Pdf effect of fineness modulus of manufactured sand on. Fineness modulus fm the fineness modulus fm is a factor obtained by adding the percentages of material in a sample of aggregate that is retained on each of the following sieves.
The cumulative percentage retained on each sieve is added and subtracted by 100 gives the value of fineness modulus. The results of testing will re ect the condition and characteristics of the aggregate from which the sample is obtained. Fineness modulus of sand fine aggregates calculations, values. Fineness modulus of sand indian standard crusher export. The higher the fm is, the coarser the aggregate is. Comparison of percentage improvement of optimized sands. However, it is preferable to have minimum fineness modulus of l4 in case of crushed stone sands and crushed gravel sands and a f. Repairs to primary health center at yenegur tq ome tender.
Fineness modulus of fine aggregate sand and sieve analysis. Dynamic properties of soft clay and loose sand from seismic. Both medium sand and coarse sand spiked with some fine sand coarse. Fineness modulus is the number at which the average size of particle is known when we counted from lower order sieve size to higher order sieve. Sieve analysis and fineness modulus of sand youtube. These equations assume that the shear modulus is independent of fluid content but not porosity, which will be discussed later, or. To find the fineness modulus of fine aggregate we need sieve sizes of 4. Fineness modulus of finer aggregate is lower than fineness modulus of coarse aggregate.
The effects of confining stress, of grouting, and of the type of grout on the shear modulus and the damping ratio were studied. Mechanical and physical properties of astm c33 sand dtic. Fineness modulus the fineness modulus is an indicator of the fineness of an aggregate and is most used for evaluating fine aggregates. The geotechnical designer is responsible for selecting the geotechnical engineering properties that are appropriate for the analyses required for design of the project. Fineness modulus is an empirical factor obtained by adding the cumulative percentages of aggregate retained on each of the standard sieves ranging from 80 mm to 150 micron and dividing this sum by 100.
Dynamic shear modulus is defined as the ratio of the shear stress to the shear strain in the literature. 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. The results indicate that the slump and flowability for all fresh concrete in this study right after mixing are between 265. Pdf for sieve analysis to determine the fineness modulus.
Local mining sand low fines content sand with fineness modulus and saturatedsurfacedry specific gravity of 2. Pdf optimization of gradation and fineness modulus of. It is calculated by performing sieve analysis with standard sieves. Fineness modulus article about fineness modulus by the free. Fineness modulus of sand sand construction aggregate. Empirical relations for g0 the smallstrain shear modulus for granular soils is.
1117 1020 2 1121 1681 792 1149 1410 362 209 841 1037 669 270 1017 1016 1426 1632 1455 1517 401 186 1108 1456 179 1534 1129 1621 759 1255 742 1301 896 939 525 888 624 1402 233 829 647 1201 719 1300