Email:

Popular Searches

  • Aug 01 1970 0183 32 6 For concrete containing no entrained air there is a slight decrease in the static modulus of elasticity at 28 days age as the fineness is increased The modulus of elasticity of concrete determined by sonic methods decreases as the fineness of the cement increas 7 The fineness of cement influences the drying shrinkage of concrete...

  • Oct 27 2013 0183 32 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 IS sieves for coarse aggregates are 80 mm 40 mm 20 mm 10 mm and 475 mm...

  • 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 IS sieves for coarse aggregates are 80 mm 40 mm 20 mm...

  • After sieving the cement on a standard 90 181 IS test sieve the residue by mass shell not exceed 10 of ordinary Portland cement 5 for rapid hardening cement There are three method of checking fineness of cement 1 By dry sieving as described above 2 Blaine air permeability method...

  • Nov 10 2020 0183 32 In Brazil this type of cement must have Blaine fineness higher than 3000 cm 2 /g Other types of cement may have lower values of fineness as the case of cement used by 214 zalp et al 2016 of CEM I type equivalent to CP I or CP II of Brazil whose fineness found by the authors was 3450 cm 2...

  • Read More INITIAL AND FINAL SETTING TIME OF CEMENT TEST PROCEDURE RESULT Fineness Test of Cement PROCEDURE OF FINENESS TEST OF CEMENT Collect a sample of cement and rub with your hands The Fineness test sample should be free of lumps Take 100 gm of cement sample and note its weight as W1...

  • the use of the fineness modulus for the grading evaluation of aggregates for concrete experimental evidence is used to show that despite certain weaknesses the fineness modulus method is applicable within wide practical limits then aspects of the fineness modulus and the specific surface not generally known are discussed...

  • Jan 01 2014 Well the Blaine method uses a small glass kerosine manometer to apply suction to the powder bed It differs from other methods in that because of uncertainty of the dimensions of the manometer tube absolute results can t be calculated Carman equation Instead the apparatus must be calibrated using a known standard material...

  • The development of the fineness modulus method of concrete mix proportioning is traced from its introduction by Abrams in 1918 The different modifications suggested by several authors are discussed and mix proportions by each method are compared The results indicate that some basic questions remain unanswered...

  • 6 Dry the sample again to a constant weight on a hot plate or in an oven at a temperature of 230 176 F 110 ºC then accurately weigh and record 7 Separate the sample into individual sizes using the proper siev The sieves normally used are the standard 8 inch 200 mm siev...

  • The ideal and optimum fineness moduli are experimentally determined for each maximum size of aggregate MSA by making concrete mixtures with aggregates of different fineness modulus and determining which of the mixtures give the highest compressive strength for a given cement...

  • Title Concrete Mix Design- A modification of the Fineness Modulus Method Author s Myron A Swayze and Ernst Gruenwald Publication Journal Proceedings Volume 43 Issue 3 Appears on pages s 829-843 Keywords none Date 3/1/1947 Abstract A comparison of three maximum size gradings of sand-gravel and sand-crushed stone mixtures in concrete has revealed that for each type...

  • The Fineness modulus of cement 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 The proportion of cement of which the grain sizes are larger than the specified mesh size is thus determined Contents Fineness Modulus...

  • The Blaine Fineness method covers the determination of the fineness of hydraulic cement using the Blaine air-permeability apparatus in terms of the specific surface expressed as total surface area in square centimeters per gram or square meters per kilogram of cement...

  • Methods for Concrete Mix Design There are many concrete mix design methods and commonly adopted methods include Fineness modulus = 27 Surface moisture = 3 40 ACI Mix Design Mix Design Procedure Step 1 -Required material information...

  • Cement is obtained by grinding various raw materials after The degree calcination to which cement is ground to smaller and smaller particles is called fineness of cement The fineness of cement has an important on the rate of hydration and hence on the rate of role gain of strength and also on the rate of evolution of heat...

  • The fineness of a given sample of cement is _ _ _ _ Report the value of R to the nearest 01 percent as the residue on the 90 micron sieve for the cement tested The standard deviation of the repeatability is about 02 percent and of the reproducibility is about 03 percent...

  • Jun 25 2013 0183 32 The Blaine fineness shown in the PHYSICAL table of the example is determined by how fast air moves through a compacted pellet of cement and thus provides an overall average measure of fineness Tracking the fineness can be useful in several ways As fineness increases concrete water demand generally goes up and may need adjustment...

  • Using the above proportions 150 mm cube specimens of refer 173 ence concrete are prepared with the available cement and cured by boiled water method The accelera 173 ted strength is determined Corres 173 ponding to this accelerated strength of the reference concrete the water/cement ratio is determined from Fig 2017...

  • Total weight of residue = w 2 = 134 gram age of fineness = 866 COMMENTS The fineness of cement is not according to the ASTM standard so the cement is not perfectly fresh therefore it should not be used for making concrete where high strength is required but can be used for low load structures as fineness is not too bad...

  • Jan 01 1994 0183 32 The premise aggregate of the same fineness modulus will require the same quantity of water to produce a mix of the same consistnecy and give a concrete of the same strength Before calculating FM lab technicians perform a sieve analysis to determine the particle size distribution or grading of the aggregate sample...

  • Example Using Absolute Volume Method Determine the mix proportions for a retaining wall using the following specifications and conditions Required 28-day compressive strength f 180 c Maximum size aggregate Exposure condition Fineness modulus of fine aggregate Specific gravity of portland cement Specific gravity of fine aggregate Specific gravity of coarse aggregate Dry-rodded unit weight of...

  • The sum of this cumulative percentage divided by 100 is the fineness modulus of the fine aggregate The percentage by weight of the total fine aggregate passing through each of the sieves is calculated These are plotted against the particle sizes using a logarithmic scale Observation...

  • Along with defining the importance of water/cement ratio and developing the slump test he defined fineness modulus in 1918 as a way of characterizing concrete aggregates simplifying the gradation curve and estimating the correct proportions to use in mix designs...

  • 11 This method determines the fineness modulus of concrete fine aggregate used in evaluation of natural and manufactured sands for portland cement concrete 12 The values given in parentheses if provided are not standard and may not be exact mathematical conversions Use each system of units separately Combining values from...

  • b Fineness modulus method c Maximum density method d Surface area method e Indian Road Congress IRC 44 method f High strength concrete mix design g Mix design based on flexural strength h Road note No 4 Grading Curve method i ACI Committee 211 method j DOE method k Mix design for pumpable concrete...

  • cement in accordance with the methods proposed by Aïtcin 25 UPV and dynamic modulus of elasticity values of the mixtures with the change of admixture main chain length cement Blaine...

  • Methods of Proportioning of Concrete Mix Arbitrary Method Trail Mixture method Fineness modulus method Minimum voids Method Arbitrary Method By this method such mixes as 1 15 3 1 part cement 15 part sand and 3 part coarse aggregate 1 2 4 1 3 6 are arbitrarily chosen by volume...

  • Apr 12 2020 0183 32 A Fineness of Cement is Measure of the size of Cement Particle and it is described in terms of the specific surface area of Cement particle The Fineness of cement can be Calculated by particle size analysis by using the air permeability method by using sedimentation method How the size of Cement Particles affects the effects the hydration...

  • Fineness modulus is denoting separately by sieving coarse and fine aggregates through the following set of sieve IS sieves for coarse aggregates are 80 mm 40 mm 20 mm 10 mm or 475 mm IS sieves for fine aggregates are 1 mm 600 μ 300 μ 212 μ 150 μ and 75 μ P = X - Z/ Z - Y 100 where X = Fineness modulus of coarse aggregate...

Get Solutions & Quotation

If you can not chat online or send an e-mail at the moment, you can fill out the following form, leaving your contact information, we will contact you as soon as possible to meet any of your requirements!