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The fineness of a given sample of cement is _ _ _ _ % Report the value of R, to the nearest 0.1 percent, as the residue on the 90 micron sieve for the cement tested. The standard deviation of the repeatability is about 0.2 percent and of the reproducibility is

MoreThe fineness modulus (FM) of aggregates can be an intimidating term, but it’s just an empirical value that describes the average size of particles in a sample of aggregate. This factor provides a basis to select estimated proportions for concrete mix design, but its real

MoreFineness is one the important properties of cement which needs to be controlled. Greater the fineness of cement, faster the rate of hydration. It is defined in terms of surface area per unit weight.

MoreMay 29, 2019· Fineness Test of Cement Procedure: 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.; Drop 100 gm of cement in 90 µm sieve and close it with the lid.

Morewhat should be the permissible value of R. to check the fineness of cement, as per IS. for cement to be std. or of good quality ? Reply Link. Saurabh Singh October 20, 2014 at 11:38 am. If weight retained on sieve is less than 10% of initial weight of cement taken then its considered well grounded cement.

MoreThe resulting value of S, to the nearest 10 cm2/gm, shall be reported as the specific surface of the cement. A difference of 1 percent between the means of the fineness measurements carried out on two different powder beds from one and the same sample is acceptable.

MoreApr 12, 2020· 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

MoreMar 05, 2014· The fineness value of 53 grade OPC when tested by Blaine’s air permeability method shall not be less than 225 m 2 /kg. The expansion value (i.e. soundness) of unaerated cement when tested by Le-Chaelier method shall not be more than 10 mm and when tested by autoclave method shall not be more than 0.8%.

MoreThis part covers determination of fineness of cement by dry sieving. The second revision of this standard has been prepared with a view to align this test method with European S!andard EN 196 (Part 6) Method of testing cements: Determination of fineness.

MoreThe fineness of cement is a measure of the size of particles of cement and is expressed in terms of specific surface area of cement. Fineness can be calculated from

MoreFineness is one the important properties of cement which needs to be controlled. Greater the fineness of cement, faster the rate of hydration. It is defined in terms of surface area per unit weight.

MoreAug 01, 1970· 2. Increasing the fineness of cement from 2700 to about 4000 cm2/g reduces the water requirement of concrete. Increasing the fineness of cement beyond an optimum limit increases the water requirement of concrete. 3. The workability of non air-entrained concrete is increased by increasing the cement fineness. In air-entrained concrete the effect

Morewhat should be the permissible value of R. to check the fineness of cement, as per IS. for cement to be std. or of good quality ? Reply Link. Saurabh Singh October 20, 2014 at 11:38 am. If weight retained on sieve is less than 10% of initial weight of cement taken then its considered well grounded cement.

MoreApr 06, 2018· Fineness test is used to check the proper grinding of cement and measures the surface area of the cement particles per unit mass. FINENESS LIMIT: It should not exceed following percentage by weight for different types of cement. Ordinary Portland cement =10%; Rapid hardening cement =5%; Low heat cement =5%

MoreFineness test indirectly measures the surface area of the particles of cement per unit mass. 5. Fineness increases the strength development in the cement principally during its first seven days. 6. It increases the rate of hydration. More is the fineness of cement particles more will be the rate of hydration. Apparatus. 1. IS Sieve (90 µm

MoreDifferent Grades of Concrete and their Uses/Applications How to calculate Quantity of Cement, Sand & water In Mortar of 1:4 FINENESS TEST OF CEMENT BY

MoreMar 01, 2015· Real-time information on cement fineness provided by the soft sensor can help reduce energy consumption of the cement grinding circuit and maintain a uniform quality of cement. Two types of static nonlinear models were considered as candidates for soft sensors, and their ability to estimate cement fineness of laboratory samples was analyzed.

MoreThe 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 []

MoreFineness 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, []

MoreWhen cement is manufactured the final process is the grinding of the clinker to form powder. The fineness of this powder is an important property. The finer the grinding the higher the specific surface. The Blaine of cement refers to the fineness

MoreMar 12, 2021· Fineness modulus is generally used to get an idea of how coarse or fine the aggregate is. More fineness modulus value indicates that the aggregate is coarser and small value of fineness modulus indicates that the aggregate is finer. Specific Surface of Aggregate. The surface area per unit weight of the material is termed as specific surface.

MoreAug 31, 2020· If any standard sieve is missing, use the value of next higher sieve. Adding extra sieve does not change the value of FM. Fineness Modulus. It is the cumulative percentage retained on standard sieve 150μm or sieves No 100 and above divided by 100. It is a single factor or an empirical number which we get from the results of sieve analysis.

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