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Blaine Air Permeability Apparatus is used for determining the fineness of Portland Cement 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.
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The cement is well graded with the smallest amount of fine particles (around 27% of particles smaller than 5 µm). Blaine specific surface areas are ranging from about 2,700 to 3,090 m2/kg; the highest value is obtained for cement particles. Recent studies [27, 28] have shown that limestone filler particles (LF) have a lower bluntness
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The slightly higher density for K is in line with that measured for the laterites which varies from 2.5 to 3.7 14. The specific surface area values of 18.32 m 2 g-1 and 25.62 m 2 g-1 respectively for F and K show that they are kaolinitic clays. Indeed, clays of this type have a specific surface area which generally varies between 10 and 30.2 m ...
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the pcs and cws density measured on a helium pycnometry principle (pycnomatic atc, porotec , thermo electron corporation, hofheim/ts., frg), and the blaine specific surface area (en 196-6 [ 48 ]) and the particle size distribution (psd) measured by a laser diffraction method with a dry dispersion (mastersizer 2000, malvern panalytical, .
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Explanation of how to calculate the concrete volume for a slab, beam and column. ... We covered some Basic Surface Area and Volume Formulas. ... Density of Cement = 1440 kg/ m 3 = 0.3636 X 1440 = 523 kg = 10.5 Approx. Bags . Sand Quantity = ( Sand Part / Concrete Parts ) * Concrete Volume = ...
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Its absolute density is 2.65 g/cm 3 and its Blaine specific surface area is 7830 cm 2 /g. The process of preparing and transforming the mud sample by heat treatment is described in the following steps (Fig. 3) (El Ouardi 2008; San Nicolas et al. 2013; Teklay et al. 2015):
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Blaine specific surface area, moisture content, bulk density and maximum packed density. Set 2 - number of observations 30. For Set 2, cement samples were taken during industrial test of a grinding-intensifying process additive of a Litoplast AI series, produced by LLC Polyplast Novomoskovsk.
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0.96 Physical properties Loss on ignition 0.57 Absolute density 3 g/cm3 Blaine Specific Surface 3678 cm2/g Cement class (σ 28 ) 37.10 ± 0.62 MPa Two workability-control tests were considered during this study; the slump test and the LCL test (AFNOR, 1998). Standard procedures were followed in performing both tests.
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Selling Units: Single item Single package size: 20X10X10 cm Single gross weight: 2.000 kg Package Type: Packaging: 20kg bags Appearance: Greyish-white powder Specific weight: 2.92 Blaine specific surface area: 6000cm2/g Additive amount: 15~20% by cement weight
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For civil works, minimum cement dosage 400 kg/m3, maximum water-cement ratio 0.4, and clean aggregates, with few fines smaller than 0.2 mm and should not release alkalis. Extreme curing precautions after 2 hours. Avoid evaporation in hot weather. Take precautions in cold weather, avoiding frozen aggregates. Other products in the same category
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This Standard replaces GB/T 8074-1987 "Method of Determination for. Specific Surface of Cement - Blaine Method". Compared with GB/T 8074-1987, the main changes in this Standard are as. follows. - added GB/T 208 "Standard Test Method for Cement Density" in. Normative References (Chapter 2 in this edition);
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The cement composition according to claim 13, wherein the Blaine specific surface area of the cement admixture is 2000 cm 2 /g or more. 24. The cement composition according to claim 13, wherein the cement admixture is electric furnace reducing period slag, having a total fluorine content of 2% or less and a Blaine specific surface area of 2500 ...
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1. Fineness of grinding-The fineness of grinding in RHC is very high (specific surface is 325 m 2 /kg min.), which means more surface area is exposed to water for hydration of cement resulting in rapid hardening and high heat. (OPC has a specific surface of 225 m 2 /kg). 2.
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The results indicate that the absolute density and the bulk density of the tested powder are 2.69 g/cm 3 and 0.61 g/cm 3, respectively. In addition, its Blaine specific surface "BSS" value is equal to 9459 cm 2 /g. Table 2 Physical parameters of MP. 2.1.2. Cement
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The specific gravity of fly ash ranges from a low value of 1.90 for a sub-bituminous ash to a high value of 2.96 for an iron-rich bituminous ash. 3. Size and Shape of Fly Ash As the flyash is a very fine material, the particle size ranges in between 10 to 100 micron. The shape of the fly ash is usually spherical glassy shaped. 4. Colour
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The physical and mechanical characteristics of the cement are given in Table 4 which follows: Table 4: Physical and Mechanical Characteristics of CEM I cement Apparent density : ρ (Kg/m3) 1 010 Specific mass : γ(Kg/m3) 3 102 Blaine specific surface area : SSB (cm2/g) 3 342 Water of normal consistency (%) 2 8,40
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BLAINE/ SPECIFIC SURFACE AREA: 415300 cm²/g. COLOUR: White Nanopowder. AVERAGE DOSE IN (MICRO)CEMENT AT 35 % LESS CEMENT USAGE: 0.0013 wt % ... Flexural aggregate in high density concrete for radiation shielding in nuclear power plants, X-ray facilities and uranium mining sites. Colour additive, Halogen-Free Flame Retardant. ...
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Apr 28, 2021Specific density of ground clinkers is similar (3.18-3.20 g/cm 3) while Blaine specific surface area of cement clinker KFA03 is slightly higher, Table 2. Ground clinkers have similar particle size distribution as seen from Fig. 1 and d values in Table 2 .
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The cement admixture according to claim 1, wherein the slowly cooled slag powder has a Blaine specific surface area of at least 4000 cm 2 /g. 10. The cement admixture according to claim 1, wherein the admixture has an oxygen consumption of at least 2.5×10 −3 mmol O 2 /g.
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Fineness of cement (sieve residue No. 008) max 12%. 0%. Blaine specific surface area. min 2500 cm 2 /g. 4600 cm 2 /g. Setting time: beginning. not less than 45 min. 80 min. Setting time: end. no more than 600 min. 160 min. Uniformity of volume change. withstands. withstands. Normal density of cement paste. not defined/rated. 33%. Signs of a ...
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Table 2Physical and chemical properties of CEM I 42.5 R type cement Chemical Composition / % Ratio / % SiO220.33 Al2O35.01 Fe2O33.61 CaO 61.41 MgO 2.38 SO33.29 Na2O 0.62 K2O 0.75 Physical properties Blaine specific surface area / cm2/g 3481 Initial Setting (min.) 145 Final Setting (min.) 210 Specific weight 3.10
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Cement Admixture, Cement Composition, and Cement Concrete Made Therefrom: A cement admixture of a low environmental load type, capable of reducing
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The Blaine specific surface is 4013 cm 2 /g and bulk density of WA was found to be 1.1 and 0.89 g/cm 3 respectively for apparent and non-apparent ones. 3.2. Particles Size Distribution and Geotechnical Properties
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Soil's specific surface area (s, m2/g): Depends on shape of soil particle. For example, if spherical (r = radius and ρ = density) ... Moreover, we define density of each of the specific phases, or r m = m s/V s varies between 2.6-2.65 for most mineral soils (mineral density) r
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The cement used was ASTM Type II Portland cement with a specific gravity of 3150 kg/m3 and Blaine specific surface area 0.306 m2/g. Initial and final setting times of the cement were 175 and 230 min, respectively. 10% silica fume on cement weight was used as a cement substitute. The silica fume had a specific gravity
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Cement CEM I class 42.5 of the origin of the Ain kbira-Sétif cement plant (East of Algeria) with an absolute density of 3.22 g/cm 3 and a Blaine specific surface of 3000 cm 2 /g. Physical properties; chemical and mineralogical composition of cement used in this work is presented in Table 1.
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The concrete mixtures were prepared with a CEM I 42.5R cement type with Blaine specific surface area (SSA) of 380 m 2/kg and specific density of 3.12 kg/m 3. The same cement was also used in concrete mixtures. In table 2 is shown the oxide composition of this type of cement.
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For the laser technique if the particles are supposed spherical, you can calculate the specific surface by applying the formula: S=Σ 6ρwi/di from i = 1 to N where ρ=density, di the size and wi the...
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So, the surface area of the cube is 24 cm2. This cube is further divided into 8 parts. Now, the size of the cube 1cm x 1cm. So now the surface area is 48 cm2 it just doubled from the first cube. Therefore, the increase in surface area faster the hydration process. Effect of increased fineness of the cement. 1. Better cohesiveness of concrete. 2.
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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.
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Specific Surface Area BET, m2/g 1.10 3.74 Blaine, m2/kg 522 724 Figure 1. Particle size distribution of materials. For this study, the SCM replacement in all binders was set to 30% by cement weight. By this way, all compositions present the same initial C3A content and thus, the different behaviours
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The Density of Sand utility returns sand density based on sand conditions (wet/dry in bulk / packaged).. The density of the sand is affected if the sand is compacted (bulged) or loose and if it is wet or dry.When packed, the grains of sand are forced to form a narrower formation, and more matter is in the volume.. Natural sand i.e. locally available River sand having a bulk density of 1.71 kg ...
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Density 3.13 CaO 66.65% Al 2 O 3 2.95% Blaine S.S.A. 23030cm /g IR 0.55% Na 2 O 0.34% Material > 75 µm 3.9% LOI 2.33% K 2 O 0.60% Setting time Initial 4h05m SO 31.47% SiO 219.90% final 5h35m MgO 2.04% Fe 2
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specific surface of 400 m2/kg according to Blaine was used in this experiment for the assessment of wear effect on grinding efficiency. Currently, HSG is not used in the cement industry. However, this material is very well described [22]; it is abrasive enough, due to its hardness between 6
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Aluminite is a refractory cement especially designed to produce refractory and isolating mortars and concretes. ... Blaine specific surface (cm2/g) 3270-Start of setting (min) 145-End of setting (min) ... Laser particle size: Laser D(v,0.9)(μm) less than 90 microns : Bulk density (g/cm3) 1,2: Specific gravity (g/cm3) 3,2: DISPATCH AND STORAGE ...
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In this research work, the Portland cement type CEM II/A 42.5, from Hammam Dalâa cement plant in the Wilaya of Msila, was employed. It should be noted that the absolute density, bulk density, porosity, and Blaine specific surface area were respectively equal to 3.1 g /cm 3, 1.9 g/cm 3, 41.93% and 4000 cm 2 /g. In addition, the chemical and ...
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81 composed of air lime, type CL-90 S, along with Portland cement, type CEM I - 42.5 R. The lime used had a density 82 of 2.24 g/cm3, bulk density of 0.36 g/cm3, blaine specific surface area 150000 cm2/g and the mean value of its 83 particle size distribution was between 5.5-6.5 m. For lime, the chemical composition information in percentage
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The fineness of each the two products from which the blended cements were made was 3200 cm2/g Blaine, and the blends covered the range from 0 to 90 percent of the ground slag component in steps of 10 percent. Pastes of the blended cements with water/cement ratios of 0. 22 and 0. 50 were pre- pared.
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Mass specific 3.12 g/cm3 Blaine Specific surface area 3425 cm2/g Consistency 30% Table 2. Physical properties of sand and WA. Physicals properties Sanaga sand crushed gneiss WA Compacted bluk density (g/cm3) 2.8 5.4 0.8 Non-compacted bluk density (g/cm3) 1.7 3.5 1.1 Equivalent of Sand: ES at Piston (%) 73.81 68.80 -
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