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Fig. 1: Specific Surface versus Compressive Strength of Cement Fineness of cement is tested in two ways : (a) By sieving. (b) By determination of specific surface (total surface area of all the particles in one gram of cement) by airpermeability apparatus. Expressed as cm 2 /gm or m 2 /kg. Generally Blaine Air permeability apparatus is used. 2.
Very coarse fine aggregate with fineness modulus increased the compressive strength of the concrete in large extent. The increased of superplasticiser from % to % has decreased the ...
Using the above proportions, 150 mm cube specimens of reference concrete are prepared with the available cement and cured by boiled water method. The accelerated strength is determined. Corresponding to this accelerated strength of the reference concrete, the water/cement ratio is determined from Fig.
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. So, in the calculation of coarse aggregate we need ...
Procedure to determine fineness of cement i) Weigh approximately 10g of cement to the nearest and place it on the sieve. ii) Agitate the sieve by swirling, planetary and linear movements, until no more fine material passes through it.
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 sizes are: 150μm (No. 100), 300μm (No. 50), 600μm (No. 30), (No. 16), (No. 8), (No. 4), (3/8in.), (3/4in.), (11/2in.), and larger ...
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.
FINENESS So we need to determine the fineness of cement by dry sieving as per IS: 4031 (Part 1) – principle of this is that we determine the proportion of cement whose grain size is larger then specified mesh size.
For conventional concrete the fineness modulus of the fine aggregate should range from to A higher fineness modulus represents a coarser material and a lower fineness modulus represents a finer material. Knowing the fineness modulus of aggregate gives you some indication of the amount of paste needed to make concrete using the ...
The scope of tests on the properties of concrete using fineness cement consisted of the fundamental tests with fresh concrete, slump, air contents, and setting time [9–11]. The experiment was planned with the following targets; slump of 120 mm ± 25 mm, watertocement ratio of, and air content of % ± .
Aug 08, 2017· Fineness of cement test 1. 0 Koya University Faculty of Engineering Civil Department 2nd Stage Concrete Technology Test no: 1 Fineness of Cement by Sieve Analysis Method Student Name: Muhammad Saleem Asaad Group: B Expr Date: Submission Date: 2.
Sep 01, 2014· What is Fineness Modulus of Aggregate? 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. Why to Determine Fineness Modulus? Fineness modulus is generally used to get an idea of [.]
Aug 01, 1970· 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 increases. 7. The fineness of cement influences the drying shrinkage of concrete.
Apr 06, 2018· Using a stop watch, measure the time taken for the oil to fall from level 2 to level 3. Blaine =k√t. where k is . Example: when t is obtained a 29 sec S=√29 S=2817 cm²/gm TECHNICAL DISCUSSION: Fineness of cement affects hydration rate hence the rate of strength gain.
Fineness test of cement is done to determine the particle size of cement. As, the rule of thumb, the finer the cement particle the best will be the cement and on the other hand the coarser the particle it will not be that good. The fineness of cement is determined by two methods; 1. Sieving Method. 2. Air Permeability Method (Blaine Method).
Nov 03, 2017· How to Check Quality of cement on Site Fineness test of Cement:As per IS: 4031 (Part 1) – 1996. The cement of good quality should have less than 10% of wt of cement particles larger than 90 µm. (micron) To determine the number of cement particles larger than 90 µm. or Fineness test of cement. The following apparatus is used.
This method determines the fineness modulus of concrete fine aggregate used in evaluation of natural and manufactured sands for portland cement concrete. 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
The object of this experiment is to determine the fineness modulus and hence to plot the particle size distribution curve for the sample of fine aggregate supplied. Theory The fineness modulus of a sample of aggregate is an index number which is roughly proportional to the average size of particle in the aggregate, that is, coarser the ...
Methods of finding fineness of cement: Fineness of cement is found by two methods A) By method of dry sieving B) By specific surface method finding fineness of cement using Blanine''s air permeability apparatus. Though method B is more accurate it is rarely used for specific A is quite good for field work.
6. Dry the sample again to a constant weight on a hot plate or in an oven at a temperature of 230°F (110 ºC), then accurately weigh and record. 7. Separate the sample into individual sizes using the proper sieves. The sieves normally used are the standard 8 inch (200 mm) sieves.
Jun 18, 2014· Overview Blaine''s air permeability apparatus consists essentially of a means of drawing a definite quantity of air through a prepared bed of cement of definite porosity. The fineness is expressed as a total surface area in square centimeters per gram. Apparatus Measuring instruments Name Range Accuracy Blaine air permeability apparatus Refer to IS:5516 Balance 3 [.]
Apr 05, 2018· Fineness of cement test by using 90 micron is sieve as per code IS:4031(part1):1996. ... FINENESS OF CEMENT BY BLAINE''S AIR PERMEABILITY APPARATUS AS PER ASTM C 204 07 IS ... AASHTO T209 ...
Example Using Absolute Volume Method Determine the mix proportions for a retaining wall, using the following specifications and conditions: Required 28day compressive strength (f´ 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 Dryrodded unit weight of ...
Duff Abram, an early pioneer in concrete technology, proposed a method of using the fineness modulus (FM) for concrete mixture proportioning. His research showed that aggregates with the same FM would produce concrete with the same strength. The following, taken from "ACI Terminology," defines FM: "A factor obtained by adding the total ...
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