Crdc10480 method of calculation of the fineness modulus. It was concluded that fine graded sands could be used in concreting after optimization that will reduce the huge transportation costs of using coarse sand from far. Grading region and fineness modulus can be used to express the gradation and the coarseness of sand particles respectively. Before calculating fm, lab technicians perform a sieve analysis to determine the particle size distribution, or grading, of the aggregate sample. For any type of mix proportioning sieve analysis results and fineness modulus is required. Pdf for sieve analysis to determine the fineness modulus. As per the astm c33 specif ication 30, the fineness of fine aggregate needs to be in the range of 2. Fineness of cement is measured by sieving cement on standard sieve. Fineness modulus of sand fine aggregate is an index number which represents the mean size of the particles in sand. Pdf effect of fineness modulus of manufactured sand on fresh. 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.
Production of concrete is always deal with inconsistency. The results indicate that the slump and flowability for all fresh concrete in this study right after mixing are between 265. Sources of variation like materials from different geographical basis, mix design method, fineness of aggregates and so on will attribute to different level of achievement of the concrete. 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. Comparison of optimized gradation curves with astm limits.
A blend of fine aggregate 70% qibla bandi and 30% of chenab river sand having fineness modulus of 2. What is fineness modulus of sand fine aggregate and. It is an empirical number relating to the fineness of the aggregate. For every 5% increase in fm of sand, admixture dosage reduced by 0.
The weight cement particle whose size greater than 90 microns is determined and the percentage of retained cement particle are calculated. Fineness modulus is defined as the sum of the cumulative percentages retained on specified sieves. It is pointed out that manufactured sand is anytime better than river sand. Can changes in fine aggregate affect concrete finishability. This is crushed sand because the grains are pointed. Fineness modulus of naturally fine sands for improved performance.
This method determines the fineness modulus of concrete fine aggregate used in evaluation of natural and manufactured sands for portland cement concrete. And for all in aggregates or combined aggregates fineness modulus varies from 3. Effect of fineness modulus of manufactured sand on. Excel sheet for sieve analysis of aggregate and to. Another issue associated with river sand is that of obtaining required grading with a fineness modulus fm of 2. Experimental study on impact on fineness of sand and msand in m20 grade of concrete article pdf available in materials today. May, 20 binq mining mining equipment pdf for sieve. The larger the fineness modulus, the more coarse the aggregate. Fineness modulus is a term used as an index to the fineness or coarseness of sand. Specifications for coarse and fine aggregates from natural sources for concrete. To calculate the fineness modulus of sand, the sum of the cumulative percentages retained on the following sieves are divided by 100. Pdf selfcompacting concrete scc is considered as an innovative construction material in the construction industry due to its excellent fresh.
Even though researcher had verified that higher fineness modulus of sand would yield better performance for the concrete, but so. The particle shape is cubical, which is almost closer to rounded river sand. 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. Fineness modulus of coarse aggregates and its calculation. Fineness modulus of coarse aggregate varies from 5. Pdf for sieve analysis to determine the fineness modulus of sand. These include two mathematical expressionsfor thefineness modulus as afunction of the particle size distribution, which show that the fineness modulus is a measure of the logarithmic average particle size of the grading.
Follow the steps shown below to blend aggregate using fineness modulus value. Suitability of scoria as fine aggregate and its effect on. In building materials in civil engineering, 2011 1 grain gradation and coarseness of sand. Coarse aggregate may be available in several different size groups, such as 19 to 4. Effect of fineness of sand on density of concrete after measuring the slump, several 150 mm cubes were filled. It is found out by sieve analysis test of standard size in the laboratory. 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. Significance and why to test fineness test of cement significance and why to test fineness test of cement we know that cement hydrates with the presence of water. Fineness modulus is used to know the size of aggregate grains particles for various measurements used in civil engineering. Hope it will consume less time in case of repetitive calculations. Fineness test of cement and its significance tests on cement. Two kinds of coarse aggregates stiff and soft and three kinds of fine aggregates fm3. 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.
Chapter 2 sieve analysis and fineness modulus sampling. For aggregates used in pcc, another common gradation description for fine aggregate is the fineness modulus. The use of the fineness modulus for the grading evaluation. Fineness modulus is generally used to get an idea of how coarse or fine the. Fineness modulus article about fineness modulus by the. It is described in astm c 125 and is a single number used to describe a gradation curve. This research is mainly concentrated on gradation of fine aggregate to get required quality by examine the effect of different fineness modulus fm of msand 2.
Self compacting concrete scc is one of the innovative construction material based on the performance in both fresh and hardened state. Fineness modulus of sand sand construction aggregate scribd. The higher the fm is, the coarser the aggregate is. The fineness of sand affects the cost and properties of concrete.
Fineness modulus of sand free download as pdf file. Fineness modulus of fine aggregate txdot designation. 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. Fineness modulus the fineness modulus is an indicator of the fineness of an aggregate and is most used for evaluating fine aggregates. A typical fineness modulus for fine aggregate used in pcc is between 2. 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. An empirical factor obtained by adding the total percentages of a sample of the. In this video, we will see how to do the sieve analysis and find out the fineness modulus of sand. Step by step guide for blending aggregates using fineness modulus value step1 calculate fineness modulus of fine aggregate. Pdf optimization of gradation and fineness modulus of naturally. The proportion of cement of which the cement particle sizes are greater than the 90 micron is determined.
Then aspects of the fineness modulus and the specific surface not generally known are discussed. To find the fineness modulus of fine aggregate we need sieve sizes of 4. Sand type original fineness modulus optimized fineness modulus s1 1. The fineness modulus of the sand used in ordinary concrete is within 3. The results of testing will re ect the condition and characteristics of the aggregate from which the sample is obtained. Determination of fineness modulus of sand to determine the fineness modulus, we need standard sieves, mechanical sieve shaker optional. The bigger the fineness modulus is, the more coarse the sand is. Crdc10480 method of calculation of the fineness modulus of. Fineness modulus of finer aggregate is lower than fineness modulus of coarse aggregate. Susceptibility of jhelum river bed aggregate to alkali silica reaction and its potential as construction aggregate. Pdf sand is an accumulation of grains of mineral matter derived from. The fineness modulus is computed by adding the cumulative percentages retained on the 6 in. Method of calculation of the fineness modulus of aggregate pdf. On the other hand by increasing fineness modulus from 2.
Due to over consumption of natural river sand deposits creating several environmental issues, as an alternate. Fineness modulus of sand fine aggregate is an index number which represents mean size of particles in sand. The thumb rule is lower the fineness modulus, particles are smaller and higher the fineness modulus, particles are larger. What is fineness modulus of sand fine aggregate and calculation. Pdf effect of fineness modulus of manufactured sand on. The grain gradation and coarseness of sand are determined by screen residue analysis. Pdf experimental study on impact on fineness of sand and. The fineness modulus is a single parameter that describes the grading curve and can be useful in checking the uniformity of grading. Excel sheet for sieve analysis of aggregate and to calculate fineness modulus.
Abstract the effects of various fineness moduli fm of fine aggregate on the engineering properties of high. The fineness modulus fm is an empirical figure obtained by adding the total percentage of. 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. 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. Effect of fineness of sand on the cost and properties of. The cumulative percentage retained on each sieve is added and subtracted by 100 gives the value of fineness modulus. It is calculated by performing sieve analysis with standard sieves.
Based on the fineness modulus of fine aggregate, sand can be categorized as fine sand 2. Effect of fineness modulus of manufactured sand on mechanical. Corrections are necessary whenever fineness modulus varies from 2. This is rolled sand because the grains are rounded. Sieve analysis and fineness modulus of sand youtube. The importance of fineness modulus concrete construction. However, it is preferable to have minimum fineness modulus of l4 in case of crushed stone sands and crushed gravel sands and a f. The fineness modulus of samples taken from proposed sources must be a minimum 2.