• #### What is the Fineness of Cement It's Test and Effects

Apr 12, 2020· For the present case the specific surface area of standard cement is given as 3400 cm2/gm & the time ‘T’ is measured as 49 seconds Therefore, the value of constant ‘K’ can be determined by the following equation. Aim: To determining the weight of the cement sample to be tested for its fineness following steps are to be followed.

• 1. Initially apply oil in the inner portion of the permeability cell and on the surface of the plunger. Then place the perforated metal disc into t.2. Then take the calculated amount of cement to say 2.8 grams and place this cement in the permeability cell. Then take the plunger and press the c.3. Now connect the permeability cell to the U-Tube manometer with the help of rubber coupling.4. Open the stop cock and press the pressure bulb, due to this water present in the tube will start to depress.5. Close the stop cock when the water reaches the bottom mark AA'.6. When the water touches the second mark BB' start the stopwatch, then the water starts moving towards CC'.7. When the water touches the mark CC' stop the stopwatch and note the time 'T' in seconds.8. We have to carry out three observations amongst these 3 observations minimum of three observations must be taken for the average value of 'S' sp.9. To determine specific surface area 'S' we have to follow the following equation.10. The value of constant 'K' can be determined by using a standard cement of known specific surface area and measuring the value of 'T' for a stan.
• #### FINENESS OF CEMENT BY BLAINES AIR PERMEABILITY METHOD

OverviewDetermination of The Bed VolumeDetermination of FinenessTechnical DiscussionPrecautionsTest Standard ReferenceBlaine’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.See more on civilblogPublished: Jun 18, 2014
• #### Air permeability specific surface Wikipedia

Measurement consists of packing the powder into a cylindrical "bed" having a known porosity (i.e. volume of air-space between particles divided by total bed volume). A pressure drop is set up along the length of the bed cylinder. The resulting flow-rate of air through the bed yields the specific surface by the Kozeny–Carman equation: $${\displaystyle S={\cfrac {7d}{\rho \,(1-\epsilon \,)}}{\sqrt {\dfrac {\epsilon \,^{3}\pi \,\delta \,P}{l\eta \,Q}}}}$$

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Measurement consists of packing the powder into a cylindrical "bed" having a known porosity (i.e. volume of air-space between particles divided by total bed volume). A pressure drop is set up along the length of the bed cylinder. The resulting flow-rate of air through the bed yields the specific surface by the Kozeny–Carman equation: $${\displaystyle S={\cfrac {7d}{\rho \,(1-\epsilon \,)}}{\sqrt {\dfrac {\epsilon \,^{3}\pi \,\delta \,P}{l\eta \,Q}}}}$$where: S is specific surface, m ·kg d is the cylinder diameter, m ρ is the sample particle density, kg·m ε is the volume porosity of the bed (dimensionless) δP is the pressure drop across the bed, Pa l is the cylinder length, m η is the air dynamic viscosity, Pa·s Q is the flowrate, m ·s It can be seen that the specific surface is proportional to the square root of the ratio of pressure to flow. Various standard methods have been proposed: • Maintain a constant flowrate, and measure the pressure drop• Maintain a constant pressure drop, and measure the flowrate• Allow both to vary, deriving the ratio from the characteristics of the apparatus.The second of these was developed by Lea and Nurse. The bed is 25 mm in diameter and 10 mm thick. The desired porosity (which may vary in the range 0.4 to 0.6) is obtained by using a calculated weight of sample, pressed to precisely these dimensions. The required weight is given by: $${\displaystyle M={\tfrac {\pi }{4}}\,d^{2}l\rho \,(1-\epsilon \,)}$$

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• #### Blaine Specific Surface Area Cement Density

After grinding, the Blaine specific surface area of the cement sample was captured according to the standard method described in EN 196-6, and the particle size distribution was determined utilizing a Cilas Particle Size Analyzer 1064, with a measuring range of 0.04–500 μm. 2.5. Assessment of cement

• #### Blaine Specific Surface Area Cement Density

Blaine Specific Surface Area Cement Density. blaine specific surface area cement density This apparatus determines the fineness of portland cement and measures the specific surface area of fine materials in square centimeters per gram of test sample by using this apparatus a quantity of air is drawn through a bed of definite porosity the rate of air flow

• #### Blaine Specific Surface Area Cement Density

Blaine specific surface area determinations were also performed bulk density, specific surface area, Know More. cement grinding blaine. The mostmon method for characterizing the surface area of a cement is the Blaine air permeability test, Blaine Specific Surface Area (cement Density)

• #### blaine specific surface area cement density sand chemical

12. TESTING OF CEMENT PART 1. 12.2.2 Air Permeability Method ( Blaine Method ) The fineness of cement is measured as specific surface. Specific surface is expressed as the total surface area in square metres of all the cement particles in one kilogram of cement. The higher the specific surface is, the finer cement will be.

• #### 12. TESTING OF CEMENT PART 1.

12.2.2 Air Permeability Method (Blaine Method) The fineness of cement is measured as specific surface. Specific surface is expressed as the total surface area in square metres of all the cement particles in one kilogram of cement. The higher the specific surface is, the finer cement will be.

• #### Standard Test Methods for Fineness of Hydraulic Cement by

1.1 This test method covers 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 centimetres per gram, or square metres per kilogram, of cement. Two test methods are given: Test Method A is the Reference Test Method using the manually operated standard Blaine apparatus,

• #### Has anyone used Blaine test to measure the fineness of

The reference material is always the cement which the Blaine specific surface and density are knew. These parameters will be used to determine de K of your Blaine apparatus.

• #### Blaine Specific Surface Area Cement Density

Blaine Specific Surface Area Cement Density. blaine specific surface area cement density This apparatus determines the fineness of portland cement and measures the specific surface area of fine materials in square centimeters per gram of test sample by using this apparatus a quantity of air is drawn through a bed of definite porosity the rate of air flow

• #### Blaine Specific Surface Area Cement Density

Measuring Cement Particle Size and Surface Area by TRB. specific surface area at the scale of gas molecules the cement industry: Blaine in ASTM C 204 measures

• #### blaine specific surface area cement density sand chemical

12. TESTING OF CEMENT PART 1. 12.2.2 Air Permeability Method ( Blaine Method ) The fineness of cement is measured as specific surface. Specific surface is expressed as the total surface area in square metres of all the cement particles in one kilogram of cement. The higher the specific surface is, the finer cement will be.

• #### AUTOBLAINE PLUS for automatic blaine tests of cements

On-screen wizard to perform the tests, including specific protocols for conducting the test according toEN 196-6 or ASTM C 204.The wizard calculates automatically the weight of cement to test according to the measured density,desired porosity and verified volume (cement bed) of the Blaine cell.

• #### InstruQuest Inc. HumiPyc Model 2C (Cement)

Knowing the geometrical volume of the cement (or other powder) bed and the true volume determined by pycnometer, porosity can be calculated. Since temperature of the test is also known, the air (gas) viscosity is easily calculated. Various forms of the equations employed in the C204 method can be utilized to obtained the specific surface area

• #### Study on Properties of Rice Husk Ash and Its Use as Cement

and beam length of 2.40 mm. The specific gravity (SG) of cement was determined according to the British Standard (BS 1377: Part 2) using the small pycnometer method. The fineness of the cement was determined by conducting the Blaine surface area test according to ASTM C 204-94a and shown in Table 2. 3.1.2. Aggregate

• #### Determination of Particle Size, Surface Area, and Shape of

Determination of particle size, surface area, and shape permeability test for speciﬁc surface area (Blaine), which is widely used for characterizing Portland cements [15], relies on the assumptions that there is a Density (g/cm3) 2.136 2.221 2.784 2.924 2.217 Loss

• #### IS 4031-2 (1999): Methods of physical tests for hydraulic

determining by Blaine air permeability apparatus, the fineness of cement as represented by specific surface expressed as total surface area in cm2/g. NOTE This method is also being used for determination of fineness of various other materials. However, it should be

• #### Ordinary Portland Cement ASO CEMENT

Ordinary Portland Cement: JIS * Standards (JIS R 5210) Density (g/cm 3) 3.15-Specific Surface Area (cm 2 /g) 3310: More than 2500: Setting: Initial Set h-min Final Setting h-min: 2-10 3-15: More than 60min Less than 10h: Soundness (Pat Test) Qualified: Qualified: Compressive Strength (N/mm 2) 3d 7d 28d: 31.2 46.1 62.6: More than 12.5 More than

• #### Cement Blaine Fineness Tester Air Permearbility Apparatus

Cement Blaine Fineness Tester Air Permearbility Apparatus Specific Surface Area Test,Find Complete Details about Cement Blaine Fineness Tester Air Permearbility Apparatus Specific Surface Area Test,Specific Surface Area Test,Air Permeability Test,Blaine Fineness from Testing Equipment Supplier or Manufacturer-Hangzhou Civit Instrument Equipment Co., Ltd.

• #### ASTM C204 18e1 Standard Test Methods for Fineness of

1.1 This test method covers 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 centimetres per gram, or square metres per kilogram, of cement. Two test methods are given: Test Method A is the Reference Test Method using the manually operated standard Blaine apparatus,

• #### BS EN 196-6:2018 Methods of testing cement. Determination

Methods of testing cement. Determination of fineness BS 4359-2:1982 Determination of the specific surface area of powders. Recommended air permeability methods BS 1924-2:2018 TC Tracked Changes. Hydraulically bound and stabilized materials for civil engineering purposes.

• #### MicroFine Cement engro-global

Microfine Cement for Injection of Rock and Soil. DESCRIPTION MicroCem is a Portland cement based grouting material composed of microfine particles with a specific surface area of >800m²/kg. As a grout, it has excellent permeability, strength and durability properties.

• #### Study on Properties of Rice Husk Ash and Its Use as Cement

and beam length of 2.40 mm. The specific gravity (SG) of cement was determined according to the British Standard (BS 1377: Part 2) using the small pycnometer method. The fineness of the cement was determined by conducting the Blaine surface area

• #### Determination of Particle Size, Surface Area, and Shape of

Determination of particle size, surface area, and shape permeability test for speciﬁc surface area (Blaine), which is widely used for characterizing Portland cements [15], relies on the assumptions that there is a Density

• #### Cement Blaine Fineness Tester Air Permearbility Apparatus

Cement Blaine Fineness Tester Air Permearbility Apparatus Specific Surface Area Test,Find Complete Details about Cement Blaine Fineness Tester Air Permearbility Apparatus Specific Surface Area Test,Specific Surface Area Test,Air Permeability Test,Blaine

• #### Investigation on the optimal chemical structure of

Nov 10, 2019· After grinding, the Blaine specific surface area of the cement sample was captured according to the standard method described in EN 196-6, and the particle size distribution was determined utilizing a Cilas Particle Size Analyzer 1064, with a measuring range of 0.04–500 μm. 2.5. Assessment of cement

• #### NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA

and Specific Surface JC/T 956, Apparatus for Blaine method 3 Principle This method is to test specific surface area of cement based on the theory that the resistance of a specific amount of air, passing through the cement layer with specific area

• #### How to Determine the Fineness of Cement ? Concrete

Then specific surface area Sw is calculated from the following relation- where, n = porosity of cement taken as 0.475 . A = area of cement bed in cm 2. L = length of cement bed in cm . d = density of cement

• #### PARTICLE SIZE DISTRIBUTION AND SPECIFIC SURFACE AREA

Conference segment on Concrete with Supplementary Cementitious Materials 22-24 August 2016, Technical University of Denmark, Lyngby, Denmark For the determination of the specific surface area (SSA), the Blaine method (BM) has been commonly used for cement

• #### BS EN 196-6:2018 Methods of testing cement. Determination

Methods of testing cement. Determination of fineness BS 4359-2:1982 Determination of the specific surface area of powders. Recommended air permeability methods BS 1924-2:2018 TC Tracked

• #### MicroFine Cement engro-global

Microfine Cement for Injection of Rock and Soil. DESCRIPTION MicroCem is a Portland cement based grouting material composed of microfine particles with a specific surface area of >800m²/kg. As a

• #### Silica fume Wikipedia

Silica fume is an ultrafine material with spherical particles less than 1 μm in diameter, the average being about 0.15 μm. This makes it approximately 100 times smaller than the average cement particle. The bulk density of silica fume depends on the degree of densification in the silo and varies from 130 (undensified) to 600 kg/m 3.The specific

• #### Fly Ash, Slag, Silica Fume, and Natural Pozzolans, Chapter 3

rial, which is ground to less than 45 microns, has a surface area fineness of about 400 to 600 m 2/kg Blaine. The relative density (specific gravity) for ground granulated blast-furnace slag is in the range of 2.85 to 2.95. The bulk density

• #### Blaine value vs position parameter Page 1 of 1

Specific surface area =41048 x (PP^-0.394) x (n^-0.198) x (density^-1.078) Where PP is position parameter on RRSB Graph for given sample. n = RRSB Number or RRSB Slope. density = density of sample in g/cm3 (typically for cement = 3.15 g/cm3) Ex: For a typical cement

• #### Blaine Air,Fineness RC TECHNOLOGY

Blaine Air Permeability Apparatus. standards: ASTM C204, AASHTO T153. Blaine Air Permeability Apparatus measures the specific surface area of fine materials in square centimeters per gram of

• #### IMPROVED CEMENT QUALITY AND GRINDING EFFICIENCY BY

Blaine Specific surface area value as per ASTM C 204, m2/kg or cm2/g C Matrix of classification C.L. Circulation load F Particle size distribution state vector f(x) Density probability (frequency) function,