Explain the procedure to bring the fineness modulus in required permissible limits. Method of calculation of the fineness modulus of aggregate pdf. Coarse sand is not as workable, and fine sands are uneconomical. The importance of fineness modulus download the pdf version of this article. Fineness modulus, silt test, specific gravity, water absorption, bulk density etc. The fineness modulus is computed by adding the cumulative percentages retained on the 6 in. Slno fineness modulus nature of sand 1 22 26 fine sand 2 26 29 medium sand 3 29 32 coarse sand sand having a fineness modulus more than 32 will be unsuitable for making satisfactory concrete the fineness modulus values obtained for sand, quarry. Fine aggregate consisting of blend of fine natural sand with fineness modulus. It is an empirical number relating to the fineness of the aggregate. Sand properties affect the workability, boardlife, compressive strength. Coarse aggregate may be available in several different size groups, such as 19 to 4.
Fineness modulus of finer aggregate is lower than fineness modulus of coarse aggregate. To determine the fineness of the cement, we have used the sieve analysis method. In this video, we will see how to do the sieve analysis and find out the fineness modulus of sand. Effect of fineness of sand on the cost and properties of. The fineness modulus fm is an empirical figure obtained by adding the total percentage of. The above table is showing us that the laurence pure sand is coarser then chenab sand and similarly sargodha crush is coarser then margala crush. Pdf optimization of gradation and fineness modulus of. Abstract the effects of various fineness moduli fm of fine aggregate on the engineering properties of high.
The fineness modulus is computed by adding the cumulative percentages retained on the 6. Test methods for mineral filler used in hma ahmed f. Oct 30, 2017 download excel sheet for sieve analysis of aggregate and calculating fineness modulus stay safe and healthy. Download excel sheet for sieve analysis of aggregate and. There sand have been named as w and x in data of their fineness modulus. For the purposes of this test fine aggregate is defined as that material that passes the 318 inch sieve. East region concrete division aci spring convention april 15, 20 minneapolis, mn off the chart concrete mixture proportioning by. Provide safe access to the material for sampling from haul units or stockpiles. It is calculated by performing sieve analysis with standard. The cumulative percentage retained on each sieve is added and subtracted by 100 gives the value of fineness modulus. Excel sheet for sieve analysis of aggregate and to. Excel sheet for sieve analysis of aggregate and to calculate fineness modulus. The fineness modulus is a single parameter that describes the grading curve and can be useful in checking the uniformity of grading.
The grain gradation and coarseness of sand are determined by screen residue analysis. Fm is fineness modulus click here to see how its calculated various lab tests on sand. Specifications for coarse and fine aggregates from natural sources for concrete. To find the fineness modulus of fine aggregate we need sieve sizes of 4. Pdf effect of fineness modulus of manufactured sand on. What is fineness modulus of sand fine aggregate and calculation. Some natural aggregate deposits, called pitrun gravel, consist of gravel and sand that can be readily used in concrete after minimal processing. Well graded sand is also useful for good bonding of. The department may reinspect and retest aggregates regardless of inspection at the producing plant. Cive1010 building materials technology 5 cr 127 lecture 4. Pdf effect of fineness modulus of manufactured sand on fresh.
It is calculated by performing sieve analysis with standard sieves. The fineness of sand found by sieve analysis governs the proportion of sand in concrete. Lower fm indicates fine sand and higher fm indicates courser sand. Effect of fineness of sand on the cost and properties of concrete. Fineness modulus is a term used as an index to the fineness or coarseness of sand. Fineness modulus defines the size of the of the aggregates on concrete mix design. Request pdf effect of fineness modulus and specific gravity of manufactured sand as fine aggregate in mix proportioning of concrete concrete is a widely used material in the world. 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. Even though researcher had verified that higher fineness modulus of sand would yield better performance for the concrete, but so far there have been scarce amount of paper reported on the mix design method adopting high fineness modulus of sand. Fineness of cement is measured by sieving cement on standard sieve. Maharashtra state board of technical education autonomous. The results indicate that the sand conforms to zone 11 of is. All these tests are available here qualities of good sand. Due to over consumption of natural river sand deposits creating several environmental issues, as an alternate.
Chapter 2 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. Fineness modulus of fine aggregate txdot designation. Hope it will consume less time in case of repetitive calculations. Please wash your hands and practise social distancing. 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 of sand fine aggregates calculations, values. Test results and discussion in this experiment, we are tasked to determine the fineness of the cement.
Significance and use a method of selecting mixture proportions for concrete based on the fineness. It is described in astm c 125 and is a single number used to describe a gradation curve. Fracture characterization of roller compacted concrete. A sieve analysis or gradation test is a practice or. Good sand should have coarse and angular grains of pure.
Pdf selfcompacting concrete scc is considered as an innovative construction material in the construction industry due to its excellent fresh. This method determines the fineness modulus of concrete fine aggregate used in evaluation of natural and manufactured sands for portland cement concrete. Chapter 2 sieve analysis and fineness modulus sampling. Fineness modulus of coarse aggregates and its calculation.
Fineness modulus is given by division of the summation of cumulative retained fractions for standard sieves up to 150micron sieve size by 100. The fineness of sand affects the cost and properties of concrete. Fineness modulus of sand may be define as sum of cumulative % age retained on standard sieves 4,8,16,30,50 and 100 divide by 100. Glossary of terms july 15, 2005 page 3 colloidal pertaining to soil particles that are so small less than 0. The overall fineness of sand is given by factor called fineness modulus. The importance of fineness modulus concrete construction. Fineness modulus of fine aggregate sand and sieve analysis. It is important to note that the fineness modulus is just one number which only characterizes the average size of the aggregate, and different grading may have the same fineness modulus. Fineness modulus of aggregates and combined modulus coarse aggregate. Grading region and fineness modulus can be used to express the gradation and the coarseness of sand particles respectively.
The above table is showing us that the laurence pure sand is coarser then chenab sand and similarly sargodha crush is. 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. If you have high modulus of fineness, the tendency of mixture is to have. The fineness modulus of samples taken from proposed sources must be a minimum 2. Self compacting concrete scc is one of the innovative construction material based on the performance in both fresh and hardened state. It is found out by sieve analysis test of standard size in the laboratory. International journal of science and engineering research. Many of the rccp constructed to date have been constructed using type i or ii portland cement. Therefore, fineness modulus of coarse aggregates sum cumulative % retained 100 717100 7. Local mining sand low fines content sand with fineness modulus and saturatedsurfacedry specific gravity of 2. The results indicate that the slump and flowability for all fresh concrete in this study right after mixing are between 265. The higher the fm is, the coarser the aggregate is. Do not use spent metal casting foundry sand, unless the contract expressly allows for its use.
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. Two kinds of coarse aggregates stiff and soft and three kinds of fine aggregates fm3. Apr 10, 2018 fineness modulus of sand and sieve analysis of sand how to decide zone of sand fine aggregate. Fineness modulus the fineness modulus is an indicator of the fineness of an aggregate and is most used for evaluating fine aggregates. Fineness modulus of sand sand construction aggregate scribd. Fineness modulus is determined separately by sieving coarse and fine aggregates through the following set of sieve. Bahia university of wisconsin madison international workshop on asphalt binders and mastics september 16th and 17th, 2010 madisonwisconsin. Rational mix design approach for high strength concrete. Excessive fineness makes cement to shrink and increases the setting time. The result is the fineness modulus of the sample a sand. 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 a measure of the average grain size of a fine aggregate and is computed by adding the cumulative percentages retained on the sieves mentioned in paragraph 3, and dividing the sum by 100. Aggregates types classification civil engineers pk.
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. Before beginning concrete work, typical grading of calcareous sand and crushed lava rock fines shall be submitted. Aggregates for concrete bination of gravels or crushed stone with particles predominantly larger than 5 mm 0. The fineness modulus of sand is obtained by adding the cumulative percentages retained on the following standard sieves. Performance of cement sand mortars using diverse grades of sand.
Fa having either a very high or a very low fineness modulus is not as good a concrete aggregate as medium sand. For any type of mix proportioning sieve analysis results and fineness modulus is required. Fineness modulus is defined as the sum of the cumulative percentages retained on specified sieves. Crdc10480 method of calculation of the fineness modulus. 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. It is important the fineness modulus is within the acceptable range of the material used in the mix design since a finer sand would increase the water demand and. Fineness modulus fm is used in determining the degree of uniformity of the aggregate gradation. 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 analysis and fineness modulus of sand youtube. Fineness modulus of combined aggregates is always between the fineness modulus of aggregates and combined modulus coarse aggregate have intermediate value.
Dec 09, 2017 in this video, we will see how to do the sieve analysis and find out the fineness modulus of sand. To find fineness modulus of coarse aggregate we need sieve sizes of 80mm, 40mm, 20mm, 10mm, 4. The larger the fineness modulus, the more coarse the aggregate. Grading shall not have more than 45 percent retained between two consecutive sieves that are specified in control of fineness modulus. Effect of fineness modulus of manufactured sand on. Effects of various fineness moduli of fine aggregate on. The index number, which describes the relative sizes of coarse and fine aggregates, is called as fineness modulus fm. Fineness modulus of sand free download as pdf file. 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. Fineness modulus of sand fine aggregate is an index number which represents the mean size of the particles in sand. The particle shape is cubical, which is almost closer to rounded river sand. We used type 1 portland cement in this particular experiment.
Two diverse grade of sand were selected from the construction material provider who is providing materials in the society. Effect of fineness modulus and specific gravity of. A fineness modulus of the sand is important because of its effect on the water demand of the mix. The influence of these different fine aggregates was analyzed based on the compaction parameters moisture and dry unit weight, indirect tensile strength, flexural strength, and modulus of elasticity. In building materials in civil engineering, 2011 1 grain gradation and coarseness of sand. Jul 05, 20 the fineness of sand affects the cost and properties of concrete. Table 3 wash wet concrete, mortar, cement, or cement mixtures from your. How to assess the quality of fine aggregate at site. Computation of soilmortar percentages, coarse sand ratio, grading modulus and fineness modulus buying of standards during national lockdown please note that all sans standards can still be purchased as pdf files from sabs webstore. For aggregates used in pcc, another common gradation description for fine aggregate is the fineness modulus.
Corrections are necessary whenever fineness modulus varies from 2. The effect of using low fines content sand on the fresh. Effect of rice husk ash on fresh and hardened properties of. What is fineness modulus of sand fine aggregate and. Another issue associated with river sand is that of obtaining required grading with a fineness modulus fm of 2. Fineness modulus is generally used to get an idea of. Aggregates for concrete e sieve and predominantly retained on the 75 m no. In accepting with the data of fineness modulus of the sand are as following were 1.